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person · Reporting owner

EVNIN LUKE

Disclosed activity across 13 companies

Tapewire entity
2480
SEC CIK
0001134657

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Aktis Oncology, Inc.AKTS · Entity 471110% ownerJanuary 12, 2026January 14, 2026
Dyne Therapeutics, Inc.DYN · Entity 394810% ownerSeptember 21, 2020September 23, 2020
Oncorus, Inc.ONCR · Entity 112213DirectorJune 23, 2022June 24, 2022
RHYTHM PHARMACEUTICALS, INC.RYTM · Entity 369310% ownerOctober 10, 2017October 11, 2017
Syndax Pharmaceuticals IncSNDX · Entity 4578Director · 10% ownerMay 23, 2018May 25, 2018
TURMERIC ACQUISITION CORP.TMPM · Entity 139875Chief Executive OfficerApril 30, 2021April 30, 2021
Werewolf Therapeutics, Inc.HOWL · Entity 7244DirectorJuly 06, 2026July 08, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote1,655,971 Reported balance After 2026-01-12 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2026-01-12 · Conversion · Acquired 1,314,262 · Balance 1,655,971

F1: The shares of common stock were issued upon conversion as follows: 556,810 by MPM BioVentures 2018, L.P. ("BV 2018"), 29,593 by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"), 10,988 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"), 119,478 by MPM Oncology Innovations Fund, L.P. ("MPM Oncology") and 597,393 by Oncology Impact Private Investment Fund 2, L.P. ("MPM Oncology Impact"). MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Drs. Evnin and Gadicke are managing directors of BV 2018 LLC and managers of MPM Oncology Innovations Fund GP LLC, which is the general partner of MPM Oncology. Dr. Gadicke is the managing member of MPM Oncology Investments 2 LLC, which is the general partner of MPM Oncology Impact.

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F4: The shares are held as follows: 341,709 by MPM Asset Management LLC ("MPM AM"), 556,810 by BV 2018, 29,593 by BV 2018(B), 10,988 by AM BV2018, 119,478 by MPM Oncology and 597,393 by MPM Oncology Impact. Dr. Gadicke is the manager of MPM AM.

Common StockSEC Table I · non-derivativeIndirectSee Footnote7,570,168 Reported balance After 2026-01-12 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2026-01-12 · Conversion · Acquired 5,914,197 · Balance 7,570,168

F5: The shares of common stock were issued upon conversion as follows: 2,505,648 by BV 2018, 133,170 by BV 2018(B), 49,452 by AM BV2018, 537,654 by MPM Oncology and 2,688,273 by MPM Oncology Impact.

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F6: The shares are held as follows: 341,709 by MPM AM, 3,062,458 by BV 2018, 162,763 by BV 2018(B), 60,440 by AM BV2018, 657,132 by MPM Oncology and 3,285,666 by MPM Oncology Impact.

Common StockSEC Table I · non-derivativeIndirectSee Footnote9,147,287 Reported balance After 2026-01-12 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2026-01-12 · Conversion · Acquired 1,577,119 · Balance 9,147,287

F7: The shares of common stock were issued upon conversion as follows: 668,173 by BV 2018, 35,512 by BV 2018(B), 13,187 by AM BV2018, 143,374 by MPM Oncology and 716,873 by MPM Oncology Impact.

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F8: The shares are held as follows: 341,709 by MPM AM, 3,730,631 by BV 2018, 198,275 by BV 2018(B), 73,627 by AM BV2018, 800,506 by MPM Oncology and 4,002,539 by MPM Oncology Impact.

Common StockSEC Table I · non-derivativeIndirectSee Footnote10,260,064 Reported balance After 2026-01-12 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2026-01-12 · Purchase · Acquired 1,112,777 · Balance 10,260,064

F9: The shares were purchased as follows: 219,897 by BV 2018, 8,689 by BV 2018(B), 4,284 by AM BV2018, 46,574 by MPM Oncology and 833,333 by MPM Oncology Impact.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F10: The shares are held as follows: 341,709 by MPM AM, 3,950,528 by BV 2018, 206,964 by BV 2018(B), 77,911 by AM BV2018, 847,080 by MPM Oncology and 4,835,872 by MPM Oncology Impact.

Series Seed Redeemable Convertible Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2026-01-12 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2026-01-12 · Conversion · Disposed 5,000,000 · Balance 0

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F1: The shares of common stock were issued upon conversion as follows: 556,810 by MPM BioVentures 2018, L.P. ("BV 2018"), 29,593 by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"), 10,988 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"), 119,478 by MPM Oncology Innovations Fund, L.P. ("MPM Oncology") and 597,393 by Oncology Impact Private Investment Fund 2, L.P. ("MPM Oncology Impact"). MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Drs. Evnin and Gadicke are managing directors of BV 2018 LLC and managers of MPM Oncology Innovations Fund GP LLC, which is the general partner of MPM Oncology. Dr. Gadicke is the managing member of MPM Oncology Investments 2 LLC, which is the general partner of MPM Oncology Impact.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Series A Redeemable Convertible Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2026-01-12 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2026-01-12 · Conversion · Disposed 22,500,000 · Balance 0

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F5: The shares of common stock were issued upon conversion as follows: 2,505,648 by BV 2018, 133,170 by BV 2018(B), 49,452 by AM BV2018, 537,654 by MPM Oncology and 2,688,273 by MPM Oncology Impact.

Series B Redeemable Convertible Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2026-01-12 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2026-01-12 · Conversion · Disposed 6,000,000 · Balance 0

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F7: The shares of common stock were issued upon conversion as follows: 668,173 by BV 2018, 35,512 by BV 2018(B), 13,187 by AM BV2018, 143,374 by MPM Oncology and 716,873 by MPM Oncology Impact.

Filing footnotes · ownership attribution and instrument terms

F1: The shares of common stock were issued upon conversion as follows: 556,810 by MPM BioVentures 2018, L.P. ("BV 2018"), 29,593 by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"), 10,988 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"), 119,478 by MPM Oncology Innovations Fund, L.P. ("MPM Oncology") and 597,393 by Oncology Impact Private Investment Fund 2, L.P. ("MPM Oncology Impact"). MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Drs. Evnin and Gadicke are managing directors of BV 2018 LLC and managers of MPM Oncology Innovations Fund GP LLC, which is the general partner of MPM Oncology. Dr. Gadicke is the managing member of MPM Oncology Investments 2 LLC, which is the general partner of MPM Oncology Impact.

F2: Each share of Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock automatically converted into shares of the Issuer's Common Stock on a 3.8044-for-1 basis into the number of shares of Common Stock shown in Column 7 without payment of further consideration upon the closing of the initial public offering of the Issuer's Common Stock. The Series Seed Redeemable Convertible Preferred Stock, Series A Redeemable Convertible Preferred Stock and Series B Redeemable Convertible Preferred Stock had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F4: The shares are held as follows: 341,709 by MPM Asset Management LLC ("MPM AM"), 556,810 by BV 2018, 29,593 by BV 2018(B), 10,988 by AM BV2018, 119,478 by MPM Oncology and 597,393 by MPM Oncology Impact. Dr. Gadicke is the manager of MPM AM.

F5: The shares of common stock were issued upon conversion as follows: 2,505,648 by BV 2018, 133,170 by BV 2018(B), 49,452 by AM BV2018, 537,654 by MPM Oncology and 2,688,273 by MPM Oncology Impact.

F6: The shares are held as follows: 341,709 by MPM AM, 3,062,458 by BV 2018, 162,763 by BV 2018(B), 60,440 by AM BV2018, 657,132 by MPM Oncology and 3,285,666 by MPM Oncology Impact.

F7: The shares of common stock were issued upon conversion as follows: 668,173 by BV 2018, 35,512 by BV 2018(B), 13,187 by AM BV2018, 143,374 by MPM Oncology and 716,873 by MPM Oncology Impact.

F8: The shares are held as follows: 341,709 by MPM AM, 3,730,631 by BV 2018, 198,275 by BV 2018(B), 73,627 by AM BV2018, 800,506 by MPM Oncology and 4,002,539 by MPM Oncology Impact.

F9: The shares were purchased as follows: 219,897 by BV 2018, 8,689 by BV 2018(B), 4,284 by AM BV2018, 46,574 by MPM Oncology and 833,333 by MPM Oncology Impact.

F10: The shares are held as follows: 341,709 by MPM AM, 3,950,528 by BV 2018, 206,964 by BV 2018(B), 77,911 by AM BV2018, 847,080 by MPM Oncology and 4,835,872 by MPM Oncology Impact.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee footnote4,614,943 Reported balance After 2020-09-21 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2020-09-21 · Conversion · Acquired 4,614,943 · Balance 4,614,943

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2: The shares are held directly by MPM BioVentures 2018, L.P. ("BV 2018"). The general partner of BV 2018 is MPM BioVentures 2018 GP LLC ("BV 2018 GP"). MPM BioVentures 2018 LLC ("BV 2018 LLC") is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018, except to the extent of its pecuniary interest therein, if any.

Common StockSEC Table I · non-derivativeIndirectSee footnote245,279 Reported balance After 2020-09-21 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2020-09-21 · Conversion · Acquired 245,279 · Balance 245,279

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3: The shares are held directly by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"). The general partner of BV 2018(B) is BV 2018 GP. BV 2018 LLC is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018(B), except to the extent of its pecuniary interest therein, if any.

Common StockSEC Table I · non-derivativeIndirectSee footnote91,081 Reported balance After 2020-09-21 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2020-09-21 · Conversion · Acquired 91,081 · Balance 91,081

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F4: The shares are held directly by MPM Asset Management Investors BV2018 LLC ("MPM Asset Management"). The manager of MPM Asset Management is BV 2018 LLC. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV2018 LLC. Each of BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by MPM Asset Management, except to the extent of his pecuniary interest therein, if any.

Series A Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2020-09-21 · Conversion · Disposed 13,980,992 · Balance 0

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2: The shares are held directly by MPM BioVentures 2018, L.P. ("BV 2018"). The general partner of BV 2018 is MPM BioVentures 2018 GP LLC ("BV 2018 GP"). MPM BioVentures 2018 LLC ("BV 2018 LLC") is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018, except to the extent of its pecuniary interest therein, if any.

Series A Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2020-09-21 · Conversion · Disposed 743,076 · Balance 0

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3: The shares are held directly by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"). The general partner of BV 2018(B) is BV 2018 GP. BV 2018 LLC is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018(B), except to the extent of its pecuniary interest therein, if any.

Series A Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2020-09-21 · Conversion · Disposed 275,932 · Balance 0

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F4: The shares are held directly by MPM Asset Management Investors BV2018 LLC ("MPM Asset Management"). The manager of MPM Asset Management is BV 2018 LLC. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV2018 LLC. Each of BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by MPM Asset Management, except to the extent of his pecuniary interest therein, if any.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2020-09-21 · Conversion · Disposed 1,326,313 · Balance 0

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2: The shares are held directly by MPM BioVentures 2018, L.P. ("BV 2018"). The general partner of BV 2018 is MPM BioVentures 2018 GP LLC ("BV 2018 GP"). MPM BioVentures 2018 LLC ("BV 2018 LLC") is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018, except to the extent of its pecuniary interest therein, if any.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2020-09-21 · Conversion · Disposed 70,492 · Balance 0

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3: The shares are held directly by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"). The general partner of BV 2018(B) is BV 2018 GP. BV 2018 LLC is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018(B), except to the extent of its pecuniary interest therein, if any.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2020-09-21 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2020-09-21 · Conversion · Disposed 26,176 · Balance 0

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F4: The shares are held directly by MPM Asset Management Investors BV2018 LLC ("MPM Asset Management"). The manager of MPM Asset Management is BV 2018 LLC. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV2018 LLC. Each of BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by MPM Asset Management, except to the extent of his pecuniary interest therein, if any.

Filing footnotes · ownership attribution and instrument terms

F1: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2: The shares are held directly by MPM BioVentures 2018, L.P. ("BV 2018"). The general partner of BV 2018 is MPM BioVentures 2018 GP LLC ("BV 2018 GP"). MPM BioVentures 2018 LLC ("BV 2018 LLC") is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018, except to the extent of its pecuniary interest therein, if any.

F3: The shares are held directly by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"). The general partner of BV 2018(B) is BV 2018 GP. BV 2018 LLC is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018(B), except to the extent of its pecuniary interest therein, if any.

F4: The shares are held directly by MPM Asset Management Investors BV2018 LLC ("MPM Asset Management"). The manager of MPM Asset Management is BV 2018 LLC. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV2018 LLC. Each of BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by MPM Asset Management, except to the extent of his pecuniary interest therein, if any.

F5: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

Oncorus, Inc.

Report date June 23, 2022 · Filed June 24, 2022

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.60 · Expires 2032-06-23Direct12,500 Reported balance After 2022-06-23 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2022-06-23 · Grant · Acquired 12,500 · Balance 12,500

F1: The option shall vest in twelve (12) equal monthly installments commencing on July 23, 2022, subject to the Reporting Person continuing to provide service through each such date.

Filing footnotes · ownership attribution and instrument terms

F1: The option shall vest in twelve (12) equal monthly installments commencing on July 23, 2022, subject to the Reporting Person continuing to provide service through each such date.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote2,596,392 Reported balance After 2017-10-10 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2017-10-10 · Conversion · Acquired 2,567,014 · Balance 2,596,392

F1: Each share of preferred stock converted into approximately 0.10905125 shares of common stock upon the closing of the issuer's initial public offering. The shares had no expiration date.

F2: The shares are held as follows: 2,499,299 by MPM BioVentures V, L.P. ("BV V") and 97,093 by MPM Asset Management Investors BV5 LLC ("AM BV5"). MPM BioVentures V GP LLC and MPM BioVentures V LLC ("BV LLC") are the direct and indirect general partners of BV V and BV LLC is the manager of AM BV5. Ansbert Gadicke, Luke Evnin and Todd Foley are the members of BV LLC. Mr. Foley is a director of the Issuer and has separately filed a Form 4. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote2,696,392 Reported balance After 2017-10-10 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2017-10-10 · Purchase · Acquired 100,000 · Balance 2,696,392

F3: Shares were purchased as follows: 96,260 by BV V and 3,740 by AM BV5.

F4: Shares are held as follows: 2,595,559 by BV V and 100,833 by AM BV5. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

Series A Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2017-10-10 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2017-10-10 · Conversion · Disposed 7,651,831 · Balance 0

F1: Each share of preferred stock converted into approximately 0.10905125 shares of common stock upon the closing of the issuer's initial public offering. The shares had no expiration date.

F5: The shares of Series A Preferred Stock were held as follows: 7,365,688 by BV V and 286,143 by AM BV5.

Series A-1 Junior Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2017-10-10 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2017-10-10 · Conversion · Disposed 15,887,703 · Balance 0

F1: Each share of preferred stock converted into approximately 0.10905125 shares of common stock upon the closing of the issuer's initial public offering. The shares had no expiration date.

F6: The shares of Series A-1 Junior Preferred Stock were held as follows: 15,293,569 by BV V and 594,134 by AM BV5.

Filing footnotes · ownership attribution and instrument terms

F1: Each share of preferred stock converted into approximately 0.10905125 shares of common stock upon the closing of the issuer's initial public offering. The shares had no expiration date.

F2: The shares are held as follows: 2,499,299 by MPM BioVentures V, L.P. ("BV V") and 97,093 by MPM Asset Management Investors BV5 LLC ("AM BV5"). MPM BioVentures V GP LLC and MPM BioVentures V LLC ("BV LLC") are the direct and indirect general partners of BV V and BV LLC is the manager of AM BV5. Ansbert Gadicke, Luke Evnin and Todd Foley are the members of BV LLC. Mr. Foley is a director of the Issuer and has separately filed a Form 4. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F3: Shares were purchased as follows: 96,260 by BV V and 3,740 by AM BV5.

F4: Shares are held as follows: 2,595,559 by BV V and 100,833 by AM BV5. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F5: The shares of Series A Preferred Stock were held as follows: 7,365,688 by BV V and 286,143 by AM BV5.

F6: The shares of Series A-1 Junior Preferred Stock were held as follows: 15,293,569 by BV V and 594,134 by AM BV5.

Syndax Pharmaceuticals Inc

Report date May 23, 2018 · Filed May 25, 2018

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $8.93 · Expires 2028-05-23Direct14,000 Reported balance After 2018-05-23 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2018-05-23 · Grant · Acquired 14,000 · Balance 14,000

TURMERIC ACQUISITION CORP.

Report date April 30, 2021 · Filed April 30, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class B ordinary sharesSEC Table II · derivative / convertible securityIndirectBy Turmeric Management, LLC2,298,750 Reported balance After 2021-04-30 transaction · row 1 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 1 · 2021-04-30 · Other · Acquired 17,500 · Balance 2,298,750

F1: As described in the issuer's registration statement on Form S-1 (File No. 333-249099) under the heading "Description of Securities--Founder Shares", the Class B ordinary shares, par value $0.0001 per share, will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the issuer at the time of the issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date.

F2: Pursuant to certain repurchase agreement, dated as of April 30, 2021, 17,500 Class B ordinary shares of the Issuer were transferred from the Vinay Bhaskar to Turmeric Management, LLC as a result of Dr. Bhaskar's resignation as an officer of the Issuer.

F3: The securities reported herein are held by Turmeric Management, LLC (the "Sponsor"). The Sponsor is governed by a board of directors consisting of one director, the Reporting Person. As such, the Reporting Person has voting and investment discretion with respect to the Class B ordinary shares held of record by the Sponsor and may be deemed to have shared beneficial ownership of the Class B ordinary shares held directly by the Sponsor.

Filing footnotes · ownership attribution and instrument terms

F1: As described in the issuer's registration statement on Form S-1 (File No. 333-249099) under the heading "Description of Securities--Founder Shares", the Class B ordinary shares, par value $0.0001 per share, will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the issuer at the time of the issuer's initial business combination, or earlier at the option of the holder, on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date.

F2: Pursuant to certain repurchase agreement, dated as of April 30, 2021, 17,500 Class B ordinary shares of the Issuer were transferred from the Vinay Bhaskar to Turmeric Management, LLC as a result of Dr. Bhaskar's resignation as an officer of the Issuer.

F3: The securities reported herein are held by Turmeric Management, LLC (the "Sponsor"). The Sponsor is governed by a board of directors consisting of one director, the Reporting Person. As such, the Reporting Person has voting and investment discretion with respect to the Class B ordinary shares held of record by the Sponsor and may be deemed to have shared beneficial ownership of the Class B ordinary shares held directly by the Sponsor.

Werewolf Therapeutics, Inc.

Report date July 06, 2026 · Filed July 08, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnotes107,429 Reported balance After 2026-07-06 transaction · row 1 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 1 · 2026-07-06 · Sale · Disposed 35,770 · Balance 107,429

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated March 26, 2026.

F2: The shares were sold as follows: 3,832 by MPM Asset Management LLC ("AM LLC"), 24,197 by MPM BioVentures 2014, L.P. ("BV 2014"), 1,614 by MPM BIoVentures 2014(B), L.P. ("BV 2014(B)"), 833 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 5,294 by MPM Oncology Innovations Fund, L.P. ("MPM OIF").

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.3128 to $0.3388 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC ("MPM OIF GP") is the general partner of MPM OIF. Luke Evnin is a member of AM LLC, a Managing Director of BV LLC and a manager of MPM OIF GP. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

F5: The shares are held as follows: 11,509 by AM LLC, 72,676 by BV 2014, 4,845 by BV 2014(B), 2,499 by AM BV2014 and 15,900 by MPM OIF.

Common StockSEC Table I · non-derivativeIndirectSee Footnotes0 Reported balance After 2026-07-07 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 2 · 2026-07-07 · Sale · Disposed 107,429 · Balance 0

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated March 26, 2026.

F6: The shares were sold as follows: 11,509 by AM LLC, 72,676 by BV 2014, 4,845 by BV 2014(B), 2,499 by AM BV2014 and 15,900 by MPM OIF.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.295 to $0.3342 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC ("MPM OIF GP") is the general partner of MPM OIF. Luke Evnin is a member of AM LLC, a Managing Director of BV LLC and a manager of MPM OIF GP. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

F8: No shares held by AM LLC, BV 2014, BV 2014(B), AM BV2014 and MPM OIF.

Filing footnotes · ownership attribution and instrument terms

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated March 26, 2026.

F2: The shares were sold as follows: 3,832 by MPM Asset Management LLC ("AM LLC"), 24,197 by MPM BioVentures 2014, L.P. ("BV 2014"), 1,614 by MPM BIoVentures 2014(B), L.P. ("BV 2014(B)"), 833 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 5,294 by MPM Oncology Innovations Fund, L.P. ("MPM OIF").

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.3128 to $0.3388 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC ("MPM OIF GP") is the general partner of MPM OIF. Luke Evnin is a member of AM LLC, a Managing Director of BV LLC and a manager of MPM OIF GP. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his pecuniary interest therein.

F5: The shares are held as follows: 11,509 by AM LLC, 72,676 by BV 2014, 4,845 by BV 2014(B), 2,499 by AM BV2014 and 15,900 by MPM OIF.

F6: The shares were sold as follows: 11,509 by AM LLC, 72,676 by BV 2014, 4,845 by BV 2014(B), 2,499 by AM BV2014 and 15,900 by MPM OIF.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.295 to $0.3342 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8: No shares held by AM LLC, BV 2014, BV 2014(B), AM BV2014 and MPM OIF.

Past disclosures · reporting ended (6)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

Section 16 reporting ended · disclosed 2026-09-09. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote4,106,452 Reported balance After 2026-09-04 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2026-09-04 · Sale · Disposed 38,500 · Balance 4,106,452

F1: The shares were sold as follows: 17,482 by MPM BioVentures 2014, L.P. ("BV 2014"), 1,166 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 602 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 17,942 by MPM BioVentures 2018, L.P. ("BV 2018"), 954 by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)") and 354 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV2014 LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC.

F2: Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.01 to $7.16 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F3: The shares are held as follows: 1,864,673 by BV 2014, 124,370 by BV 2014(B), 64,182 by AM BV2014, 1,913,743 by BV 2018, 101,714 by BV 2018(B) and 37,770 by AM BV2018.

F4: Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,913,952 Reported balance After 2026-09-08 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2026-09-08 · Sale · Disposed 192,500 · Balance 3,913,952

F5: The shares were sold as follows: 87,411 by BV 2014, 5,830 by BV 2014(B), 3,009 by AM BV2014, 89,712 by BV 2018, 4,768 by BV 2018(B) and 1,770 by AM BV2018.

F6: Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.97 to $7.70 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F4: Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F7: The shares are held as follows: 1,777,262 by BV 2014, 118,540 by BV 2014(B), 61,173 by AM BV2014, 1,824,031 by BV 2018, 96,946 by BV 2018(B) and 36,000 by AM BV2018.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,885,115 Reported balance After 2026-09-09 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2026-09-09 · Sale · Disposed 28,837 · Balance 3,885,115

F8: The shares were sold as follows: 13,095 by BV 2014, 873 by BV 2014(B), 451 by AM BV2014, 13,439 by BV 2018, 714 by BV 2018(B) and 265 by AM BV2018.

F9: Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.02 to $7.54 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F4: Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F10: The shares are held as follows: 1,764,167 by BV 2014, 117,667 by BV 2014(B), 60,722 by AM BV2014, 1,810,592 by BV 2018, 96,232 by BV 2018(B) and 35,735 by AM BV2018.

Filing footnotes · ownership attribution and instrument terms

F1: The shares were sold as follows: 17,482 by MPM BioVentures 2014, L.P. ("BV 2014"), 1,166 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 602 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 17,942 by MPM BioVentures 2018, L.P. ("BV 2018"), 954 by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)") and 354 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV2014 LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC.

F2: Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.01 to $7.16 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F3: The shares are held as follows: 1,864,673 by BV 2014, 124,370 by BV 2014(B), 64,182 by AM BV2014, 1,913,743 by BV 2018, 101,714 by BV 2018(B) and 37,770 by AM BV2018.

F4: Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F5: The shares were sold as follows: 87,411 by BV 2014, 5,830 by BV 2014(B), 3,009 by AM BV2014, 89,712 by BV 2018, 4,768 by BV 2018(B) and 1,770 by AM BV2018.

F6: Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.97 to $7.70 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F7: The shares are held as follows: 1,777,262 by BV 2014, 118,540 by BV 2014(B), 61,173 by AM BV2014, 1,824,031 by BV 2018, 96,946 by BV 2018(B) and 36,000 by AM BV2018.

F8: The shares were sold as follows: 13,095 by BV 2014, 873 by BV 2014(B), 451 by AM BV2014, 13,439 by BV 2018, 714 by BV 2018(B) and 265 by AM BV2018.

F9: Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.02 to $7.54 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.

F10: The shares are held as follows: 1,764,167 by BV 2014, 117,667 by BV 2014(B), 60,722 by AM BV2014, 1,810,592 by BV 2018, 96,232 by BV 2018(B) and 35,735 by AM BV2018.

Section 16 reporting ended · disclosed 2021-04-16. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote3,223,853 Reported balance After 2021-04-13 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2021-04-13 · Sale · Disposed 1,657 · Balance 3,223,853

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.98 to $19.88 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: The shares are held as follows: 2,657,097 by MPM BioVentures 2014, L.P. ("BV 2014"), 152,470 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 96,376 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 317,910 by AM LLC. MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. Messrs. Evnin and Foley are the members of BV LLC and Mr. Evnin is a member of AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,223,567 Reported balance After 2021-04-13 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2021-04-13 · Sale · Disposed 286 · Balance 3,223,567

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.89 to $20.50 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F6: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 317,624 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,223,446 Reported balance After 2021-04-14 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2021-04-14 · Sale · Disposed 121 · Balance 3,223,446

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.44 to $20.39 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 317,503 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,221,896 Reported balance After 2021-04-14 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2021-04-14 · Sale · Disposed 1,550 · Balance 3,221,896

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.52 to $21.18 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F10: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 315,953 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote3,220,844 Reported balance After 2021-04-15 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2021-04-15 · Sale · Disposed 1,052 · Balance 3,220,844

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F11: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.15 to $20.99 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F12: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 314,901 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 on 3/16/2021.

F2: The shares were sold by MPM Asset Management LLC ("AM LLC").

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.98 to $19.88 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F4: The shares are held as follows: 2,657,097 by MPM BioVentures 2014, L.P. ("BV 2014"), 152,470 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 96,376 by MPM Asset Management Investors BV2014 LLC ("AM BV2014") and 317,910 by AM LLC. MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. Messrs. Evnin and Foley are the members of BV LLC and Mr. Evnin is a member of AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F5: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.89 to $20.50 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F6: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 317,624 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F7: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.44 to $20.39 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F8: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 317,503 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F9: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.52 to $21.18 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F10: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 315,953 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F11: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $20.15 to $20.99 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F12: The shares are held as follows: 2,657,097 by BV 2014, 152,470 by BV 2014(B), 96,376 by AM BV2014 and 314,901 by AM LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

Radius Health, Inc.

Report date September 27, 2016 · Filed September 29, 2016

Section 16 reporting ended · disclosed 2016-09-29. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee footnote3,887,502 Reported balance After 2016-09-27 transaction · row 1 Account identity is unresolved; indirect or unspecified ownership is not merged.
1 source row

Row 1 · 2016-09-27 · Other · Disposed 1,943,751 · Balance 3,887,502

F1: Represents pro-rata in-kind distributions of Common Stock of the Issuer by MPM Bioventures III-QP, L.P. ("BV III QP"), MPM BioVentures III, L.P ("BV III"), MPM Asset Management Investors 2003 BVIII LLC ("AM 2003"), MPM BioVentures III Parallel Fund, L.P. ("BV Parallel"), MPM BioVentures III GmbH & Co. Beteiligungs KG ("BV KG") and MPM Bio IV NVS Strategic Fund, L.P. ("MPM NVS"), without consideration to their respective limited partners and members.

F2: The shares were distributed as follows: 1,023,819 shares by BV III QP, 68,835 shares by BV III, 19,815 shares by AM 2003, 30,911 shares by BV Parallel, 86,522 shares by BV KG and 713,849 shares by MPM NVS.

F3: The shares are held as follows: 2,047,635 shares by BV III QP, 137,671 shares by BV III, 39,630 shares by AM 2003, 61,823 shares by BV Parallel, 173,045 shares by BV KG and 1,427,698 shares by MPM NVS.

F4: MPM BioVentures III GP, L.P. ("MPM III GP") and MPM BioVentures III LLC ("MPM III LLC") are the direct and indirect general partners of BV III QP, BV III, BV Parallel and BV KG. The reporting person is a member of MPM III LLC and AM 2003. MPM BioVentures IV GP LLC ("BV IV GP LLC") and MPM BioVentures IV LLC ("BV IV LLC") are the direct and indirect general partners of MPM NVS. The reporting person is a member of BV IV LLC. The reporting person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents pro-rata in-kind distributions of Common Stock of the Issuer by MPM Bioventures III-QP, L.P. ("BV III QP"), MPM BioVentures III, L.P ("BV III"), MPM Asset Management Investors 2003 BVIII LLC ("AM 2003"), MPM BioVentures III Parallel Fund, L.P. ("BV Parallel"), MPM BioVentures III GmbH & Co. Beteiligungs KG ("BV KG") and MPM Bio IV NVS Strategic Fund, L.P. ("MPM NVS"), without consideration to their respective limited partners and members.

F2: The shares were distributed as follows: 1,023,819 shares by BV III QP, 68,835 shares by BV III, 19,815 shares by AM 2003, 30,911 shares by BV Parallel, 86,522 shares by BV KG and 713,849 shares by MPM NVS.

F3: The shares are held as follows: 2,047,635 shares by BV III QP, 137,671 shares by BV III, 39,630 shares by AM 2003, 61,823 shares by BV Parallel, 173,045 shares by BV KG and 1,427,698 shares by MPM NVS.

F4: MPM BioVentures III GP, L.P. ("MPM III GP") and MPM BioVentures III LLC ("MPM III LLC") are the direct and indirect general partners of BV III QP, BV III, BV Parallel and BV KG. The reporting person is a member of MPM III LLC and AM 2003. MPM BioVentures IV GP LLC ("BV IV GP LLC") and MPM BioVentures IV LLC ("BV IV LLC") are the direct and indirect general partners of MPM NVS. The reporting person is a member of BV IV LLC. The reporting person disclaims beneficial ownership of the securities reported herein except to the extent of his pecuniary interest therein.

Section 16 reporting ended · disclosed 2020-06-25. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common SharesSEC Table I · non-derivativeIndirectSee Footnote1,801,581 Reported balance After 2020-06-23 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2020-06-23 · Conversion · Acquired 1,801,581 · Balance 1,801,581

F1: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F2: The shares are held as follows: 1,636,136 by MPM BioVentures 2014, L.P. ("BV 2014"), 109,128 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)") and 56,317 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC and members of AM BV2014.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

Common SharesSEC Table I · non-derivativeIndirectSee Footnote2,753,772 Reported balance After 2020-06-23 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2020-06-23 · Conversion · Acquired 952,191 · Balance 2,753,772

F1: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F4: The shares are held as follows: 2,500,885 by BV 2014, 166,805 by BV 2014(B) and 86,082 by AM BV2014.

Common SharesSEC Table I · non-derivativeIndirectSee Footnote3,003,772 Reported balance After 2020-06-23 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2020-06-23 · Purchase · Acquired 250,000 · Balance 3,003,772

F5: The shares were purchased as follows: 227,042 by BV 2014, 15,143 by BV 2014(B) and 7,815 by AM BV2014.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F6: The shares are held as follows: 2,727,927 by BV 2014, 181,948 by BV 2014(B) and 93,897 by AM BV2014.

Class A Preferred SharesSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2020-06-23 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2020-06-23 · Conversion · Disposed 1,801,581 · Balance 0

F1: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F7: No securities held by the Reporting Persons.

Class B Preferred SharesSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2020-06-23 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2020-06-23 · Conversion · Disposed 952,191 · Balance 0

F1: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F7: No securities held by the Reporting Persons.

Filing footnotes · ownership attribution and instrument terms

F1: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F2: The shares are held as follows: 1,636,136 by MPM BioVentures 2014, L.P. ("BV 2014"), 109,128 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)") and 56,317 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC and members of AM BV2014.

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F4: The shares are held as follows: 2,500,885 by BV 2014, 166,805 by BV 2014(B) and 86,082 by AM BV2014.

F5: The shares were purchased as follows: 227,042 by BV 2014, 15,143 by BV 2014(B) and 7,815 by AM BV2014.

F6: The shares are held as follows: 2,727,927 by BV 2014, 181,948 by BV 2014(B) and 93,897 by AM BV2014.

F7: No securities held by the Reporting Persons.

Section 16 reporting ended · disclosed 2023-06-05. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote0 Reported balance After 2023-06-01 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2023-06-01 · Other · Disposed 4,158,964 · Balance 0

F1: This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger, dated as of March 5, 2023, by and among TCR2 Therapeutics Inc. (the "Company"), Adaptimmune Therapeutics plc ("Parent") and CM Merger Sub, Inc., an indirect wholly-owned subsidiary of Parent ("Merger Sub"), as amended by that certain Amendment No. 1 to the Agreement and Plan of Merger, dated April 5, 2023, by and among the Company, Parent and Merger Sub (the "Merger Agreement"), pursuant to which Merger Sub merged with and into the Company (the "Merger") with the Company surviving the Merger as an indirect wholly-owned subsidiary of Parent effective as of June 1, 2023 (the "Effective Time").

F2: At the Effective Time, each issued and outstanding share of common stock of the Company (each, a "Share") (excluding any Shares held in treasury of the Company or owned, directly or indirectly, by Parent or Merger Sub immediately prior to the Effective Time) was cancelled and converted into the right to receive 1.5117 (the "Exchange Ratio") American Depositary Shares of Parent ("Parent ADS") representing six ordinary shares of Parent ("Parent Ordinary Shares").

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.

F4: The shares were held as follows: 3,056,272 by MPM BioVentures 2014, L.P. ("BV 2014"), 203,846 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 110,859 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 304,001 by MPM Asset Management LLC ("AM LLC"), 421,070 by MPM SunStates Fund, L.P. ("MPM SunStates") and 62,916 by MPM Asset Management Investors Sunstates Fund LLC ("AM SunStates"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B) and BV LLC is the manager of AM BV2014. MPM SunStates Fund GP LLC and MPM SunStates GP Managing Member LLC ("SunStates GP") are the direct and indirect general partners of MPM SunStates and SunStates GP is the manager of AM SunStates. Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC, Ansbert Gadicke is a member of SunStates GP and Luke Evnin and Anbsert Gadicke are the members of AM LLC.

Filing footnotes · ownership attribution and instrument terms

F1: This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger, dated as of March 5, 2023, by and among TCR2 Therapeutics Inc. (the "Company"), Adaptimmune Therapeutics plc ("Parent") and CM Merger Sub, Inc., an indirect wholly-owned subsidiary of Parent ("Merger Sub"), as amended by that certain Amendment No. 1 to the Agreement and Plan of Merger, dated April 5, 2023, by and among the Company, Parent and Merger Sub (the "Merger Agreement"), pursuant to which Merger Sub merged with and into the Company (the "Merger") with the Company surviving the Merger as an indirect wholly-owned subsidiary of Parent effective as of June 1, 2023 (the "Effective Time").

F2: At the Effective Time, each issued and outstanding share of common stock of the Company (each, a "Share") (excluding any Shares held in treasury of the Company or owned, directly or indirectly, by Parent or Merger Sub immediately prior to the Effective Time) was cancelled and converted into the right to receive 1.5117 (the "Exchange Ratio") American Depositary Shares of Parent ("Parent ADS") representing six ordinary shares of Parent ("Parent Ordinary Shares").

F3: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.

F4: The shares were held as follows: 3,056,272 by MPM BioVentures 2014, L.P. ("BV 2014"), 203,846 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 110,859 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 304,001 by MPM Asset Management LLC ("AM LLC"), 421,070 by MPM SunStates Fund, L.P. ("MPM SunStates") and 62,916 by MPM Asset Management Investors Sunstates Fund LLC ("AM SunStates"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B) and BV LLC is the manager of AM BV2014. MPM SunStates Fund GP LLC and MPM SunStates GP Managing Member LLC ("SunStates GP") are the direct and indirect general partners of MPM SunStates and SunStates GP is the manager of AM SunStates. Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC, Ansbert Gadicke is a member of SunStates GP and Luke Evnin and Anbsert Gadicke are the members of AM LLC.

Section 16 reporting ended · disclosed 2025-05-15. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote2,108,594 Reported balance After 2025-05-13 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2025-05-13 · Sale · Disposed 630,191 · Balance 2,108,594

F1: The shares were sold as follows: 355,406 by MPM BioVentures 2014, L.P. ("BV 2014"), 22,386 by MPM BioVentures 2014 (B), L.P. ("BV 2014(B)"), 12,233 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 224,467 by MPM BioVentures 2018, L.P. ("BV 2018"), 11,267 by MPM BioVentures 2018(B), L.P. ("BV 2018(B)") and 4,432 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV 2014 LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV 2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.73 to $8.34 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3: The shares are held as follows: 1,189,174 by BV 2014, 74,903 by BV 2014(B), 40,931 by AM BV2014, 751,056 by BV 2018, 37,699 by BV 2018(B) and 14,831 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any.

Filing footnotes · ownership attribution and instrument terms

F1: The shares were sold as follows: 355,406 by MPM BioVentures 2014, L.P. ("BV 2014"), 22,386 by MPM BioVentures 2014 (B), L.P. ("BV 2014(B)"), 12,233 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 224,467 by MPM BioVentures 2018, L.P. ("BV 2018"), 11,267 by MPM BioVentures 2018(B), L.P. ("BV 2018(B)") and 4,432 by MPM Asset Management Investors BV2018 LLC ("AM BV2018"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV 2014 LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("BV 2018 LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.73 to $8.34 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F3: The shares are held as follows: 1,189,174 by BV 2014, 74,903 by BV 2014(B), 40,931 by AM BV2014, 751,056 by BV 2018, 37,699 by BV 2018(B) and 14,831 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 21, 2020 Filed Sep 23, 2020 23:12 UTC Dyne Therapeutics, Inc. DYN · Entity 3948 ConversionCommon Stock 91,081 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-026194 · doc4.xml · nonDerivative · entry 3

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

MPM BioVentures 2018 GP LLC · CIK 0001818701 · 10% owner

MPM BioVentures 2018 LLC · CIK 0001818702 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

GADICKE ANSBERT · CIK 0001134655 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 91,081

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5 · price: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F4 · ownership.nature: The shares are held directly by MPM Asset Management Investors BV2018 LLC ("MPM Asset Management"). The manager of MPM Asset Management is BV 2018 LLC. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV2018 LLC. Each of BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by MPM Asset Management, except to the extent of his pecuniary interest therein, if any.

Read SEC document
September 21, 2020 Filed Sep 23, 2020 23:12 UTC Dyne Therapeutics, Inc. DYN · Entity 3948 ConversionCommon Stock 245,279 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-026194 · doc4.xml · nonDerivative · entry 2

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

MPM BioVentures 2018 GP LLC · CIK 0001818701 · 10% owner

MPM BioVentures 2018 LLC · CIK 0001818702 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

GADICKE ANSBERT · CIK 0001134655 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 245,279

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5 · price: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.nature: The shares are held directly by MPM BioVentures 2018 (B), L.P. ("BV 2018(B)"). The general partner of BV 2018(B) is BV 2018 GP. BV 2018 LLC is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018(B), except to the extent of its pecuniary interest therein, if any.

Read SEC document
September 21, 2020 Filed Sep 23, 2020 23:12 UTC Dyne Therapeutics, Inc. DYN · Entity 3948 ConversionCommon Stock 4,614,943 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-026194 · doc4.xml · nonDerivative · entry 1

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

MPM BioVentures 2018 GP LLC · CIK 0001818701 · 10% owner

MPM BioVentures 2018 LLC · CIK 0001818702 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

GADICKE ANSBERT · CIK 0001134655 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 4,614,943

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: On September 21, 2020, the Series A Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F5 · price: On September 21, 2020, the Series B Preferred Stock automatically converted into Common Stock on a 3.3169-for-one basis without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The shares are held directly by MPM BioVentures 2018, L.P. ("BV 2018"). The general partner of BV 2018 is MPM BioVentures 2018 GP LLC ("BV 2018 GP"). MPM BioVentures 2018 LLC ("BV 2018 LLC") is the managing member of BV 2018 GP. Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley are the Managing Directors of BV 2018 LLC. Each of BV 2018 GP, BV 2018 LLC, Edward Hurwitz, Luke Evnin, Ansbert Gadicke, and Todd Foley disclaims Section 16 beneficial ownership of the securities held by BV 2018, except to the extent of its pecuniary interest therein, if any.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 29,440 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 30

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 9,033 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 79,281 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 29

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 24,326 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 1,491,666 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 28

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 457,706 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 81,295 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 27

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 24,944 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 157,529 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 26

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 48,336 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B-2 Preferred Stock · Derivative 2,361,805 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 25

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 724,702 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F7 · derivative.underlying_shares: Each share of Series B-2 Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 47,674 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 24

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 15,820 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 128,384 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 23

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 42,605 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 2,415,530 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 22

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 801,619 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 131,645 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 21

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 43,687 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 255,094 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 20

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 84,655 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionSeries B Preferred Stock · Derivative 3,824,591 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · derivative · entry 19

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 1,269,230 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.exercise_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.exercise_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.exercise_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · derivative.expiration_date: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.expiration_date: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.expiration_date: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F1 · derivative.underlying_shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · derivative.underlying_shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · derivative.underlying_shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · derivative.underlying_shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 1,121 $19.00 $21,299.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 18

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 25,974

F13 · shares: On July 28, 2020, MPM Asset Management Investors BV 2018 LLC purchased 1,121 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F13 · ownership.nature: On July 28, 2020, MPM Asset Management Investors BV 2018 LLC purchased 1,121 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 3,020 $19.00 $57,380.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 17

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 69,951

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F12 · ownership.nature: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 56,814 $19.00 $1,079,466.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 16

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,316,139

F11 · shares: On July 28, 2020, BV 2018 purchased 56,814 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F11 · ownership.nature: On July 28, 2020, BV 2018 purchased 56,814 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 3,096 $19.00 $58,824.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 15

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 71,727

F10 · shares: On July 28, 2020, MPM Asset Management Investors BV 2014 LLC purchased 3,096 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F10 · ownership.nature: On July 28, 2020, MPM Asset Management Investors BV 2014 LLC purchased 3,096 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 5,994 $19.00 $113,886.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 14

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 138,985

F9 · shares: On July 28, 2020, BV 2014(B) purchased 5,994 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F9 · ownership.nature: On July 28, 2020, BV 2014(B) purchased 5,994 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 PurchaseCommon Stock 89,955 $19.00 $1,709,145.00
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 13

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,083,887

F8 · shares: On July 28, 2020, BV 2014 purchased 89,955 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F8 · ownership.nature: On July 28, 2020, BV 2014 purchased 89,955 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 9,033 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 12

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 24,853

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 24,326 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 11

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 66,931

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 457,706 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 10

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,259,325

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 24,944 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 9

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 68,381

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 48,336 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 8

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 132,991

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 724,702 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 7

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,993,932

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F12 · shares: On July 28, 2020, BV 2018(B) purchased 3,020 shares of Common Stock of the Issuer at a price of $19.00 per share pursuant to an underwritten public offering.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 15,820 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 6

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 15,820

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 42,605 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 5

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 42,605

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 801,619 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 4

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 801,619

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F6 · ownership.nature: MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC ("2018 BV LLC") are the direct and indirect general partners of BV 2018 and BV 2018(B). Luke Evnin, Ansbert Gadicke, Todd Foley and Edward Hurwitz are the managing directors of 2018 BV LLC and members of MPM Asset Management Investors BV2018 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 43,687 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 3

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 43,687

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 84,655 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 2

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 84,655

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
July 28, 2020 Filed Jul 30, 2020 01:18 UTC iTeos Therapeutics, Inc. ITOS · Entity 75965 ConversionCommon Stock 1,269,230 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-20-020683 · doc4.xml · nonDerivative · entry 1

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM BIOVENTURES 2018, L.P. · CIK 0001729505 · 10% owner

MPM BIOVENTURES 2018 (B), L.P. · CIK 0001729504 · 10% owner

MPM ASSET MANAGEMENT INVESTORS BV2018 LLC · CIK 0001734817 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,269,230

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Each share of Series B Convertible Preferred stock is convertible at any time, at the Reporting Person's election, into Common Stock, based on the then-applicable conversion rate and has no expiration date. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein.

F2 · shares: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · shares: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · shares: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F2 · price: The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 LP ("BV 2014") will convert automatically into 1,269,230 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2014 (B) LP ("BV 2014(B)") will convert automatically into 84,655 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 43,687 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 LP ("BV 2018") will convert automatically into 801,619 shares of Common Stock upon the closing of the Issuer's initial public offering.

F3 · price: (Continued From footnote 2) The shares of Series B Convertible Preferred stock held by MPM BioVentures 2018 (B) LP ("BV 2018(B)") will convert automatically into 42,605 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 15,820 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014 will convert automatically into 724,702 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2014(B) will convert automatically into 48,336 shares of Common Stock upon the closing of the Issuer's initial public offering.

F4 · price: (Continued From footnote 3) The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2014 LLC will convert automatically into 24,944 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018 will convert automatically into 457,706 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by BV 2018(B) will convert automatically into 24,326 shares of Common Stock upon the closing of the Issuer's initial public offering. The shares of Series B-2 Convertible Preferred stock held by MPM Asset Management Investors BV 2018 LLC will convert automatically into 9,033 shares of Common Stock upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-3.3115 reverse stock split which became effective on July 20, 2020.

F5 · ownership.nature: MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("2014 BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of 2014 BV LLC and members of MPM Asset Management Investors BV2014 LLC.

Read SEC document
June 23, 2020 Filed Jun 25, 2020 20:31 UTC Repare Therapeutics Inc. RPTX · Entity 68433 ConversionClass B Preferred Shares · Derivative 952,191 $0.00 $0.00
Disclosure

SEC source: 0001209191-20-038917 · doc4.xml · derivative · entry 5

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Shares · 952,191 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.exercise_date: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.expiration_date: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F7 · ownership.nature: No securities held by the Reporting Persons.

Read SEC document
June 23, 2020 Filed Jun 25, 2020 20:31 UTC Repare Therapeutics Inc. RPTX · Entity 68433 ConversionClass A Preferred Shares · Derivative 1,801,581 $0.00 $0.00
Disclosure

SEC source: 0001209191-20-038917 · doc4.xml · derivative · entry 4

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Shares · 1,801,581 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.exercise_date: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.expiration_date: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F7 · ownership.nature: No securities held by the Reporting Persons.

Read SEC document
June 23, 2020 Filed Jun 25, 2020 20:31 UTC Repare Therapeutics Inc. RPTX · Entity 68433 PurchaseCommon Shares 250,000 $20.00 $5,000,000.00
Disclosure

SEC source: 0001209191-20-038917 · doc4.xml · nonDerivative · entry 3

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,003,772

F5 · shares: The shares were purchased as follows: 227,042 by BV 2014, 15,143 by BV 2014(B) and 7,815 by AM BV2014.

F3 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F6 · ownership.nature: The shares are held as follows: 2,727,927 by BV 2014, 181,948 by BV 2014(B) and 93,897 by AM BV2014.

Read SEC document
June 23, 2020 Filed Jun 25, 2020 20:31 UTC Repare Therapeutics Inc. RPTX · Entity 68433 ConversionCommon Shares 952,191 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-038917 · doc4.xml · nonDerivative · entry 2

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,753,772

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F3 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

F4 · ownership.nature: The shares are held as follows: 2,500,885 by BV 2014, 166,805 by BV 2014(B) and 86,082 by AM BV2014.

Read SEC document
June 23, 2020 Filed Jun 25, 2020 20:31 UTC Repare Therapeutics Inc. RPTX · Entity 68433 ConversionCommon Shares 1,801,581 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-20-038917 · doc4.xml · nonDerivative · entry 1

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 1,801,581

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: All series of convertible preferred shares converted into the number of shares of the Issuer's common shares on a 1-for-1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F2 · ownership.nature: The shares are held as follows: 1,636,136 by MPM BioVentures 2014, L.P. ("BV 2014"), 109,128 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)") and 56,317 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC and members of AM BV2014.

F3 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein.

Read SEC document
May 28, 2020 Filed Jun 2, 2020 01:36 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 GrantDirector Stock Option (Right to Buy) · Derivative 3,587 $0.00 Strike: $20.59 $0.00
Disclosure

SEC source: 0001209191-20-033317 · doc4.xml · derivative · entry 2

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,587

Underlying: Common Stock · 3,587 shares

Expires 2030-05-27

F2 · derivative.exercise_date: The stock option vests and becomes exercisable as to 25% of the shares subject to the option on the last day of each calendar quarter following the grant date of May 28, 2020 (on June 30, 2020, September 30, 2020, December 31, 2020, and March 31, 2021), subject to the continuous service of the Reporting Person on each vesting date.

Read SEC document
May 28, 2020 Filed Jun 2, 2020 01:36 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 GrantDirector Stock Option (Right to Buy) · Derivative 10,167 $0.00 Strike: $20.59 $0.00
Disclosure

SEC source: 0001209191-20-033317 · doc4.xml · derivative · entry 1

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,167

Underlying: Common Stock · 10,167 shares

Expires 2030-05-27

F1 · derivative.exercise_date: The stock option will fully vest and become exercisable on May 28, 2021, subject to the continuous service of the Reporting Person with the Issuer on such date.

Read SEC document
June 03, 2019 Filed Jun 5, 2019 21:24 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 GrantDirector Stock Option (Right to Buy) · Derivative 10,167 $0.00 Strike: $11.84 $0.00
Disclosure

SEC source: 0001209191-19-034844 · doc4.xml · derivative · entry 1

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,167

Underlying: Common Stock · 10,167 shares

Expires 2029-06-02

F1 · derivative.exercise_date: The stock option will fully vest and become exercisable on June 3, 2020, subject to the continuous service of the Reporting Person with the Issuer on such date.

Read SEC document
February 19, 2019 Filed Feb 21, 2019 23:05 UTC TCR2 THERAPEUTICS INC. TCRR · Entity 94327 ConversionSeries B Preferred Stock · Derivative 2,000,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-19-012243 · doc4.xml · derivative · entry 5

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM ASSET MANAGEMENT LLC · CIK 0001263048 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 322,901 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.exercise_date: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.expiration_date: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F6 · ownership.nature: No securities held by the Reporting Persons.

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February 19, 2019 Filed Feb 21, 2019 23:05 UTC TCR2 THERAPEUTICS INC. TCRR · Entity 94327 ConversionSeries A Preferred Stock · Derivative 17,500,000 $0.00 $0.00
Disclosure

SEC source: 0001209191-19-012243 · doc4.xml · derivative · entry 4

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM ASSET MANAGEMENT LLC · CIK 0001263048 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 2,825,396 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.exercise_date: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F1 · derivative.expiration_date: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F6 · ownership.nature: No securities held by the Reporting Persons.

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February 19, 2019 Filed Feb 21, 2019 23:05 UTC TCR2 THERAPEUTICS INC. TCRR · Entity 94327 PurchaseCommon Stock 706,666 $15.00 $10,599,990.00
Disclosure

SEC source: 0001209191-19-012243 · doc4.xml · nonDerivative · entry 3

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM ASSET MANAGEMENT LLC · CIK 0001263048 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,050,865

F2 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.

F5 · ownership.nature: The shares are held as follows: 3,056,272 by BV 2014, 203,846 by BV 2014(B), 110,859 by AM BV2014, 195,902 by AM LLC, 421,070 by MPM SunStates and 62,916 by AM SunStates.

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February 19, 2019 Filed Feb 21, 2019 23:05 UTC TCR2 THERAPEUTICS INC. TCRR · Entity 94327 ConversionCommon Stock 322,901 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-012243 · doc4.xml · nonDerivative · entry 2

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM ASSET MANAGEMENT LLC · CIK 0001263048 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,344,199

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F2 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.

F4 · ownership.nature: The shares are held as follows: 2,451,844 by BV 2014, 163,532 by BV 2014(B), 88,935 by AM BV2014, 195,902 by AM LLC, 386,270 by MPM SunStates and 57,716 by AM SunStates.

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February 19, 2019 Filed Feb 21, 2019 23:05 UTC TCR2 THERAPEUTICS INC. TCRR · Entity 94327 ConversionCommon Stock 2,825,396 Not disclosed Not disclosed
Disclosure

SEC source: 0001209191-19-012243 · doc4.xml · nonDerivative · entry 1

MPM BioVentures 2014, L.P. · CIK 0001609492 · 10% owner

Foley Todd · CIK 0001473930 · 10% owner

EVNIN LUKE · CIK 0001134657 · 10% owner

MPM BioVentures 2014 (B), L.P. · CIK 0001609493 · 10% owner

MPM Asset Management Investors BV2014 LLC · CIK 0001609495 · 10% owner

MPM BioVentures 2014 LLC · CIK 0001765021 · 10% owner

MPM BioVentures 2014 GP LLC · CIK 0001765091 · 10% owner

MPM ASSET MANAGEMENT LLC · CIK 0001263048 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,021,298

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: All shares of Series A Preferred Stock and Series B Preferred Stock automatically converted into the number of shares of the Issuer's common stock on a 6.1938:1 basis, for no additional consideration, immediately prior to the closing of the Issuer's initial public offering and had no expiration date.

F2 · ownership.nature: The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein.

F3 · ownership.nature: The shares are held as follows: 2,195,681 by MPM BioVentures 2014, L.P. ("BV 2014"), 146,447 by MPM BioVentures 2014(B), L.P. ("BV 2014(B)"), 79,644 by MPM Asset Management Investors BV2014 LLC ("AM BV2014"), 195,902 by MPM Asset Management LLC ("AM LLC"), 351,155 by MPM SunStates Fund, L.P. ("MPM SunStates") and 52,469 by MPM Asset Management Investors Sunstates Fund LLC ("AM SunStates"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC ("BV LLC") are the direct and indirect general partners of BV 2014 and BV 2014(B). MPM SunStates Fund GP LLC and MPM SunStates GP Managing Member LLC ("SunStates GP") are the direct and indirect general partners of MPM SunStates. Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC, Ansbert Gadicke is a member of SunStates GP and Luke Evnin and Anbsert Gadicke are the members of AM LLC.

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February 12, 2019 Filed Feb 14, 2019 22:19 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 OtherCommon Stock Warrant (Right to Buy) · Derivative 50,837 $0.00 Strike: $0.05 $0.00
Disclosure

SEC source: 0001209191-19-010288 · doc4.xml · derivative · entry 17

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 50,837 shares

Expires 2027-01-10

F6 · kind: On February 12, 2019, BV 2014, BV 2014(B) and AM BV2014 exercised warrants to purchase an aggregate of 432,119 shares of the Issuer's common stock for $0.0492 per share. The warrants were exercised as follows: 391,784 by BV 2014, 26,129 by BV 2014(B) and 14,206 by AM BV2014. The exercise price was paid on a cashless basis, resulting in the Issuer's withholding of an aggregate of 1,524 of the warrant shares to pay the exercise price and issuing to the respective holder the remaining 430,595 shares.

F13 · ownership.nature: No securities held by the Reporting Person.

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February 12, 2019 Filed Feb 14, 2019 22:19 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 OtherCommon Stock Warrant (Right to Buy) · Derivative 76,256 $0.00 Strike: $0.05 $0.00
Disclosure

SEC source: 0001209191-19-010288 · doc4.xml · derivative · entry 16

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 76,256 shares

Expires 2026-11-01

F6 · kind: On February 12, 2019, BV 2014, BV 2014(B) and AM BV2014 exercised warrants to purchase an aggregate of 432,119 shares of the Issuer's common stock for $0.0492 per share. The warrants were exercised as follows: 391,784 by BV 2014, 26,129 by BV 2014(B) and 14,206 by AM BV2014. The exercise price was paid on a cashless basis, resulting in the Issuer's withholding of an aggregate of 1,524 of the warrant shares to pay the exercise price and issuing to the respective holder the remaining 430,595 shares.

F13 · ownership.nature: No securities held by the Reporting Person.

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February 12, 2019 Filed Feb 14, 2019 22:19 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 OtherCommon Stock Warrant (Right to Buy) · Derivative 50,837 $0.00 Strike: $0.05 $0.00
Disclosure

SEC source: 0001209191-19-010288 · doc4.xml · derivative · entry 15

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 50,837 shares

Expires 2025-12-16

F6 · kind: On February 12, 2019, BV 2014, BV 2014(B) and AM BV2014 exercised warrants to purchase an aggregate of 432,119 shares of the Issuer's common stock for $0.0492 per share. The warrants were exercised as follows: 391,784 by BV 2014, 26,129 by BV 2014(B) and 14,206 by AM BV2014. The exercise price was paid on a cashless basis, resulting in the Issuer's withholding of an aggregate of 1,524 of the warrant shares to pay the exercise price and issuing to the respective holder the remaining 430,595 shares.

F13 · ownership.nature: No securities held by the Reporting Person.

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February 12, 2019 Filed Feb 14, 2019 22:19 UTC Harpoon Therapeutics, Inc. HARP · Entity 11424 OtherCommon Stock Warrant (Right to Buy) · Derivative 171,579 $0.00 Strike: $0.05 $0.00
Disclosure

SEC source: 0001209191-19-010288 · doc4.xml · derivative · entry 14

EVNIN LUKE · CIK 0001134657 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 171,579 shares

Expires 2025-08-19

F6 · kind: On February 12, 2019, BV 2014, BV 2014(B) and AM BV2014 exercised warrants to purchase an aggregate of 432,119 shares of the Issuer's common stock for $0.0492 per share. The warrants were exercised as follows: 391,784 by BV 2014, 26,129 by BV 2014(B) and 14,206 by AM BV2014. The exercise price was paid on a cashless basis, resulting in the Issuer's withholding of an aggregate of 1,524 of the warrant shares to pay the exercise price and issuing to the respective holder the remaining 430,595 shares.

F13 · ownership.nature: No securities held by the Reporting Person.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.