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Casdin Partners Master Fund, L.P.

Disclosed activity across 11 companies

Tapewire entity
40532
SEC CIK
0001534265

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Absci CorpABSI · Entity 4685DirectorJuly 26, 2021July 28, 2021
Decibel Therapeutics, Inc.DBTX · Entity 10945810% ownerFebruary 17, 2021February 19, 2021
GeneDx Holdings Corp.WGS · Entity 1634Director · 10% ownerJune 04, 2026June 08, 2026
STANDARD BIOTOOLS INC.LAB · Entity 6116Director · 10% ownerDecember 02, 2025December 05, 2025
Tenaya Therapeutics, Inc.TNYA · Entity 650610% ownerAugust 03, 2021August 04, 2021

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-derivativeDirect6,745,333 Last balance in matching sequence After 2021-07-26 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
3 source rows

Row 1 · 2021-07-26 · Conversion · Acquired 4,209,573 · Balance 4,209,573

F1: These shares of the Series E Preferred Stock automatically converted on a one-for-3.3031 basis into the number of shares of the Issuer's common stock, par value $0.0001 per share ("Common Stock"), shown in Column 7 immediately upon closing of the Issuer's initial public offering ("IPO") without payment of additional consideration. The Series E Preferred Stock had no expiration date.

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

Row 2 · 2021-07-26 · Conversion · Acquired 973,260 · Balance 5,182,833

F3: This convertible promissory note ("Convertible Note") had a maturity date of September 16, 2023. The principal and accrued interest under the Convertible Note converted upon the closing of the IPO into shares of Common Stock at a conversion price equal to $13.12 per share without payment of additional consideration.

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

Row 3 · 2021-07-26 · Purchase · Acquired 1,562,500 · Balance 6,745,333

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

Common StockSEC Table I · non-derivativeIndirectSee footnote973,260 Reported balance After 2021-07-26 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2021-07-26 · Conversion · Acquired 973,260 · Balance 973,260

F3: This convertible promissory note ("Convertible Note") had a maturity date of September 16, 2023. The principal and accrued interest under the Convertible Note converted upon the closing of the IPO into shares of Common Stock at a conversion price equal to $13.12 per share without payment of additional consideration.

F4: These shares are held by Casdin Private Growth Equity Fund, L.P. Casdin Capital is the investment adviser to Casdin Private Growth Equity Fund, L.P. and Casdin Private Growth Equity Fund GP, LLC ("Casdin Private Growth GP") is the general partner of Casdin Private Growth Equity Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Private Growth GP. Each of Casdin Capital, Casdin Private Growth GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports.

Series E Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2021-07-26 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2021-07-26 · Conversion · Disposed 1,274,431 · Balance 0

F1: These shares of the Series E Preferred Stock automatically converted on a one-for-3.3031 basis into the number of shares of the Issuer's common stock, par value $0.0001 per share ("Common Stock"), shown in Column 7 immediately upon closing of the Issuer's initial public offering ("IPO") without payment of additional consideration. The Series E Preferred Stock had no expiration date.

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

Convertible NoteSEC Table II · derivative / convertible security · Conversion / exercise price $13.12Direct0 Reported balance After 2021-07-26 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2021-07-26 · Conversion · Disposed Not disclosed · Balance 0

F3: This convertible promissory note ("Convertible Note") had a maturity date of September 16, 2023. The principal and accrued interest under the Convertible Note converted upon the closing of the IPO into shares of Common Stock at a conversion price equal to $13.12 per share without payment of additional consideration.

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

Convertible NoteSEC Table II · derivative / convertible security · Conversion / exercise price $13.12IndirectSee footnote0 Reported balance After 2021-07-26 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2021-07-26 · Conversion · Disposed Not disclosed · Balance 0

F3: This convertible promissory note ("Convertible Note") had a maturity date of September 16, 2023. The principal and accrued interest under the Convertible Note converted upon the closing of the IPO into shares of Common Stock at a conversion price equal to $13.12 per share without payment of additional consideration.

F4: These shares are held by Casdin Private Growth Equity Fund, L.P. Casdin Capital is the investment adviser to Casdin Private Growth Equity Fund, L.P. and Casdin Private Growth Equity Fund GP, LLC ("Casdin Private Growth GP") is the general partner of Casdin Private Growth Equity Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Private Growth GP. Each of Casdin Capital, Casdin Private Growth GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports.

Filing footnotes · ownership attribution and instrument terms

F1: These shares of the Series E Preferred Stock automatically converted on a one-for-3.3031 basis into the number of shares of the Issuer's common stock, par value $0.0001 per share ("Common Stock"), shown in Column 7 immediately upon closing of the Issuer's initial public offering ("IPO") without payment of additional consideration. The Series E Preferred Stock had no expiration date.

F2: These shares are held by Casdin Partners Master Fund, L.P. Casdin Capital, LLC ("Casdin Capital") is the investment adviser to Casdin Partners Master Fund, L.P., and Casdin Partners GP, LLC ("Casdin Partners GP") is the general partner of Casdin Partners Master Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Partners GP. Each of Casdin Capital, Casdin Partners GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports

F3: This convertible promissory note ("Convertible Note") had a maturity date of September 16, 2023. The principal and accrued interest under the Convertible Note converted upon the closing of the IPO into shares of Common Stock at a conversion price equal to $13.12 per share without payment of additional consideration.

F4: These shares are held by Casdin Private Growth Equity Fund, L.P. Casdin Capital is the investment adviser to Casdin Private Growth Equity Fund, L.P. and Casdin Private Growth Equity Fund GP, LLC ("Casdin Private Growth GP") is the general partner of Casdin Private Growth Equity Fund, L.P. Eli Casdin is the managing member of Casdin Capital and Casdin Private Growth GP. Each of Casdin Capital, Casdin Private Growth GP and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein, if any. Eli Casdin is a director of the Issuer and, accordingly, files separate Section 16 reports.

Decibel Therapeutics, Inc.

Report date February 17, 2021 · Filed February 19, 2021

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee footnote1,121,421 Last balance in matching sequence After 2021-02-17 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2021-02-17 · Conversion · Acquired 546,421 · Balance 546,421

F1: On February 17, 2021, the Series D Preferred Stock automatically converted into Common Stock on a 5.3-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 securities are owned directly by Casdin Partners Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, L.P., (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Row 2 · 2021-02-17 · Purchase · Acquired 575,000 · Balance 1,121,421

F2: The securities are owned directly by Casdin Partners Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, L.P., (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Series D Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2021-02-17 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2021-02-17 · Conversion · Disposed 2,896,032 · Balance 0

F1: On February 17, 2021, the Series D Preferred Stock automatically converted into Common Stock on a 5.3-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 securities are owned directly by Casdin Partners Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, L.P., (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Filing footnotes · ownership attribution and instrument terms

F1: On February 17, 2021, the Series D Preferred Stock automatically converted into Common Stock on a 5.3-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 securities are owned directly by Casdin Partners Master Fund, L.P. and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, L.P., (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund L.P., and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

GeneDx Holdings Corp.

Report date June 04, 2026 · Filed June 08, 2026

Jointly reported with Casdin Capital, LLC, Casdin Eli, Casdin Partners GP, LLC

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Class A Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeIndirectSee footnote3,657,164 Reported balance After 2026-06-04 transaction · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · 2026-06-04 · Purchase · Acquired 150,000 · Balance 3,657,164

F1: The securities are owned directly by the Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

Class A Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeIndirectSee footnote3,707,164 Reported balance After 2026-06-05 transaction · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · 2026-06-05 · Purchase · Acquired 50,000 · Balance 3,707,164

F1: The securities are owned directly by the Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

Class A Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeIndirectSee footnote19,247 Reported balance Holding disclosure · report date 2026-06-04 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 19,247

F3: The securities are owned directly by the GP and may be deemed to be indirectly beneficially owned by Eli Casdin, the managing member of the GP.

Class A Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeIndirectSee footnote333,144 Reported balance Holding disclosure · report date 2026-06-04 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 333,144

F4: The securities are owned directly by CMLS Holdings LLC ("CMLS Holdings"). The Board of Managers of CMLS Holdings includes Eli Casdin, who, as a member of the Board of Managers of CMLS Holdings, shares voting and investment discretion with respect to the common stock held by CMLS Holdings.

Class A Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeDirect20,517 Reported balance Holding disclosure · report date 2026-06-04 · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · Balance 20,517

F2: The securities are owned directly by Eli Casdin.

Filing footnotes · ownership attribution and instrument terms

F1: The securities are owned directly by the Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

F2: The securities are owned directly by Eli Casdin.

F3: The securities are owned directly by the GP and may be deemed to be indirectly beneficially owned by Eli Casdin, the managing member of the GP.

F4: The securities are owned directly by CMLS Holdings LLC ("CMLS Holdings"). The Board of Managers of CMLS Holdings includes Eli Casdin, who, as a member of the Board of Managers of CMLS Holdings, shares voting and investment discretion with respect to the common stock held by CMLS Holdings.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, $0.001 par value per shareSEC Table I · non-derivativeIndirectSee footnote71,875,000 Reported balance After 2025-12-02 transaction · row 1 Holding and transaction disclosures are not merged.
1 source row

Row 1 · 2025-12-02 · Purchase · Acquired 125,000 · Balance 71,875,000

F1: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4050 to $1.4351. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F4: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC (the "GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin and the GP.

Common Stock, $0.001 par value per shareSEC Table I · non-derivativeIndirectSee footnote71,950,000 Reported balance After 2025-12-03 transaction · row 2 Holding and transaction disclosures are not merged.
1 source row

Row 2 · 2025-12-03 · Purchase · Acquired 75,000 · Balance 71,950,000

F2: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4403 to $1.4406. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F4: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC (the "GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin and the GP.

Common Stock, $0.001 par value per shareSEC Table I · non-derivativeIndirectSee footnote72,100,000 Reported balance After 2025-12-04 transaction · row 3 Holding and transaction disclosures are not merged.
1 source row

Row 3 · 2025-12-04 · Purchase · Acquired 150,000 · Balance 72,100,000

F3: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4331 to $1.4588. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F4: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC (the "GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin and the GP.

Common Stock, $0.001 par value per shareSEC Table I · non-derivativeIndirectSee footnote13,939,637 Reported balance Holding disclosure · report date 2025-12-02 · row 5 Holding and transaction disclosures are not merged.
1 source row

Row 5 · Balance 13,939,637

F6: The securities are owned directly by Casdin Private Growth Equity Fund II, L.P. (the "Equity Fund II") and may be deemed to be indirectly beneficially owned by (i) Casdin, the investment adviser to the Equity Fund II, and (ii) Eli Casdin, the managing member of Casdin.

Common Stock, $0.001 par value per shareSEC Table I · non-derivativeIndirectSee footnote2,744,219 Reported balance Holding disclosure · report date 2025-12-02 · row 6 Holding and transaction disclosures are not merged.
1 source row

Row 6 · Balance 2,744,219

F7: The securities are owned directly by Casdin Private Growth Equity Fund, L.P. (the "Equity Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin, the investment adviser to the Equity Fund, and (ii) Eli Casdin, the managing member of Casdin.

Common Stock, $0.001 par value per shareSEC Table I · non-derivativeDirect2,901,062 Reported balance Holding disclosure · report date 2025-12-02 · row 4 Holding and transaction disclosures are not merged.
1 source row

Row 4 · Balance 2,901,062

F5: The securities are owned directly by Eli Casdin.

Filing footnotes · ownership attribution and instrument terms

F1: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4050 to $1.4351. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F2: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4403 to $1.4406. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F3: The price reported in Column 4 is a weighted average price. These shares were bought in multiple transactions within the range of $1.4331 to $1.4588. The Reporting Persons undertake 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 bought at each separate price within the range set forth in this footnote.

F4: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC (the "GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin and the GP.

F5: The securities are owned directly by Eli Casdin.

F6: The securities are owned directly by Casdin Private Growth Equity Fund II, L.P. (the "Equity Fund II") and may be deemed to be indirectly beneficially owned by (i) Casdin, the investment adviser to the Equity Fund II, and (ii) Eli Casdin, the managing member of Casdin.

F7: The securities are owned directly by Casdin Private Growth Equity Fund, L.P. (the "Equity Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin, the investment adviser to the Equity Fund, and (ii) Eli Casdin, the managing member of Casdin.

Tenaya Therapeutics, Inc.

Report date August 03, 2021 · Filed August 04, 2021

Jointly reported with Casdin Private Growth Equity Fund, L.P., Casdin Capital, LLC, CASDIN PRIVATE GROWTH EQUITY FUND GP, LLC

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnotes2,374,849 Reported balance After 2021-08-03 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2021-08-03 · Conversion · Acquired 2,374,849 · Balance 2,374,849

F1: These shares are held directly by Casdin Partners Master Fund, L.P.(CPMF).

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

Common StockSEC Table I · non-derivativeIndirectSee Footnotes3,224,849 Reported balance After 2021-08-03 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2021-08-03 · Purchase · Acquired 850,000 · Balance 3,224,849

F1: These shares are held directly by Casdin Partners Master Fund, L.P.(CPMF).

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

Common StockSEC Table I · non-derivativeIndirectSee Footnotes361,969 Reported balance After 2021-08-03 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2021-08-03 · Conversion · Acquired 361,969 · Balance 361,969

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

F3: These shares are held directly by Casdin Private Growth Equity Fund, L.P. (CPGEF).

Series B Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00IndirectSee Footnotes0 Reported balance After 2021-08-03 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2021-08-03 · Conversion · Disposed 2,012,880 · Balance 0

F4: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into one share of common stock immediately prior to the completion of the Issuer's initial public offering, and had no expiration date.

F1: These shares are held directly by Casdin Partners Master Fund, L.P.(CPMF).

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

Series C Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00IndirectSee Footnotes0 Reported balance After 2021-08-03 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2021-08-03 · Conversion · Disposed 361,969 · Balance 0

F4: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into one share of common stock immediately prior to the completion of the Issuer's initial public offering, and had no expiration date.

F1: These shares are held directly by Casdin Partners Master Fund, L.P.(CPMF).

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

Series C Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00IndirectSee Footnotes0 Reported balance After 2021-08-03 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2021-08-03 · Conversion · Disposed 361,969 · Balance 0

F4: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into one share of common stock immediately prior to the completion of the Issuer's initial public offering, and had no expiration date.

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

F3: These shares are held directly by Casdin Private Growth Equity Fund, L.P. (CPGEF).

Filing footnotes · ownership attribution and instrument terms

F1: These shares are held directly by Casdin Partners Master Fund, L.P.(CPMF).

F2: Casdin Capital, LLC is the investment advisor to CPMF and CPGEF. Casdin Partners GP, LLC is the general partner of CPMF. Casdin Private Growth Equity Fund GP, LLC is the general partner of CPGEF. The Reporting Person is the managing member of Casdin Capital, LLC, Casdin Partners GP, LLC and Casdin Private Growth Equity Fund GP, LLC and may be deemed to have voting and investment power with respect to the shares. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.

F3: These shares are held directly by Casdin Private Growth Equity Fund, L.P. (CPGEF).

F4: Each share of Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock automatically converted into one share of common stock immediately prior to the completion of the Issuer's initial public offering, and had no expiration date.

Past disclosures · reporting ended (6)

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

2seventy bio, Inc.

Report date May 13, 2025 · Filed May 15, 2025

Jointly reported with Casdin Capital, LLC, Casdin Eli, Casdin Partners GP, LLC

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeDirect0 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 · Other · Disposed 22,625 · Balance 0

F1: Represents securities that were tendered in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated March 10, 2025, by and among 2seventy bio, Inc. (the "Company"), Daybreak Merger Sub Inc. ("Merger Sub") and Bristol-Myers Squibb Company ("Parent"). Following completion of a cash tender offer by Merger Sub to acquire all of the issued and outstanding shares of the Company's common stock, par value $0.0001 per share (the "Company Common Stock") for $5.00 per share (the "Merger Consideration"), Merger Sub merged with and into the Company, with the Company continuing as the surviving corporation and a whole owned subsidiary of Parent (the "Merger").

F2: cont'd from footnote (1): Each restricted stock unit in respect of Company Common Stock ("Company RSU Award"), whether vested or unvested, that was outstanding immediately prior to the effective time of the Merger (the "Effective Time") was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company RSU Award immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the Merger Consideration. Additionally, effective as of the Effective Time and as a result of the Merger, Eli Casdin ceased to be a member of the Company's board of directors.

F3: The securities were owned directly by Eli Casdin.

Common Stock, par value $0.0001 per shareSEC Table I · non-derivativeIndirectSee footnote0 Reported balance After 2025-05-13 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2025-05-13 · Other · Disposed 2,000,000 · Balance 0

F1: Represents securities that were tendered in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated March 10, 2025, by and among 2seventy bio, Inc. (the "Company"), Daybreak Merger Sub Inc. ("Merger Sub") and Bristol-Myers Squibb Company ("Parent"). Following completion of a cash tender offer by Merger Sub to acquire all of the issued and outstanding shares of the Company's common stock, par value $0.0001 per share (the "Company Common Stock") for $5.00 per share (the "Merger Consideration"), Merger Sub merged with and into the Company, with the Company continuing as the surviving corporation and a whole owned subsidiary of Parent (the "Merger").

F2: cont'd from footnote (1): Each restricted stock unit in respect of Company Common Stock ("Company RSU Award"), whether vested or unvested, that was outstanding immediately prior to the effective time of the Merger (the "Effective Time") was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company RSU Award immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the Merger Consideration. Additionally, effective as of the Effective Time and as a result of the Merger, Eli Casdin ceased to be a member of the Company's board of directors.

F4: The securities were owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to have been indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

Stock Options (Right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $3.93Direct0 Reported balance After 2025-05-13 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2025-05-13 · Disposition to issuer · Disposed 12,050 · Balance 0

F5: Each option to purchase Company Common Stock ("Company Option"), whether vested or unvested, that was outstanding and unexercised immediately prior to the Effective Time and had a per share exercise price that was less than the Merger Consideration was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company Option immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the excess of the Merger Consideration over the per share exercise price of such Company Option.

F3: The securities were owned directly by Eli Casdin.

Stock Options (Right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $4.54Direct0 Reported balance After 2025-05-13 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2025-05-13 · Disposition to issuer · Disposed 33,400 · Balance 0

F5: Each option to purchase Company Common Stock ("Company Option"), whether vested or unvested, that was outstanding and unexercised immediately prior to the Effective Time and had a per share exercise price that was less than the Merger Consideration was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company Option immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the excess of the Merger Consideration over the per share exercise price of such Company Option.

F3: The securities were owned directly by Eli Casdin.

Filing footnotes · ownership attribution and instrument terms

F1: Represents securities that were tendered in connection with the Agreement and Plan of Merger (the "Merger Agreement"), dated March 10, 2025, by and among 2seventy bio, Inc. (the "Company"), Daybreak Merger Sub Inc. ("Merger Sub") and Bristol-Myers Squibb Company ("Parent"). Following completion of a cash tender offer by Merger Sub to acquire all of the issued and outstanding shares of the Company's common stock, par value $0.0001 per share (the "Company Common Stock") for $5.00 per share (the "Merger Consideration"), Merger Sub merged with and into the Company, with the Company continuing as the surviving corporation and a whole owned subsidiary of Parent (the "Merger").

F2: cont'd from footnote (1): Each restricted stock unit in respect of Company Common Stock ("Company RSU Award"), whether vested or unvested, that was outstanding immediately prior to the effective time of the Merger (the "Effective Time") was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company RSU Award immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the Merger Consideration. Additionally, effective as of the Effective Time and as a result of the Merger, Eli Casdin ceased to be a member of the Company's board of directors.

F3: The securities were owned directly by Eli Casdin.

F4: The securities were owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to have been indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund ("Casdin"), (ii) Casdin Partners GP, LLC, the general partner of the Master Fund (the "GP"), and (iii) Eli Casdin, the managing member of Casdin and the GP.

F5: Each option to purchase Company Common Stock ("Company Option"), whether vested or unvested, that was outstanding and unexercised immediately prior to the Effective Time and had a per share exercise price that was less than the Merger Consideration was fully vested, was cancelled and automatically converted into the right to receive, for each share of Company Common Stock underlying such Company Option immediately prior to the Effective Time, an amount (without interest and subject to deduction for any required withholding under applicable law relating to tax) in cash equal to the excess of the Merger Consideration over the per share exercise price of such Company Option.

BIOLIFE SOLUTIONS INC

Report date May 19, 2026 · Filed May 21, 2026

Jointly reported with Casdin Capital, LLC, Casdin Partners GP, LLC, Casdin Eli

Section 16 reporting ended · disclosed 2026-05-21. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.001 per shareSEC Table I · non-derivativeIndirectSee footnote4,757,165 Last balance in matching sequence After 2026-05-21 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
3 source rows

Row 1 · 2026-05-19 · Sale · Disposed 300,000 · Balance 5,657,165

F1: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin Capital"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC ("Casdin GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.

Row 2 · 2026-05-20 · Sale · Disposed 250,000 · Balance 5,407,165

F1: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin Capital"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC ("Casdin GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.

Row 3 · 2026-05-21 · Sale · Disposed 650,000 · Balance 4,757,165

F1: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin Capital"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC ("Casdin GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.

Filing footnotes · ownership attribution and instrument terms

F1: The securities are owned directly by Casdin Partners Master Fund, L.P. (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC ("Casdin Capital"), the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC ("Casdin GP"), the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital and Casdin GP.

Section 16 reporting ended · disclosed 2018-07-23. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee footnote345,783 Reported balance After 2018-07-23 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2018-07-23 · Conversion · Acquired 345,783 · Balance 345,783

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Common StockSEC Table I · non-derivativeIndirectSee footnote612,450 Reported balance After 2018-07-23 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2018-07-23 · Purchase · Acquired 266,667 · Balance 612,450

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Common StockSEC Table I · non-derivativeIndirectSee footnote158,960 Reported balance After 2018-07-23 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2018-07-23 · Conversion · Acquired 158,960 · Balance 158,960

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F3: These securities are owned directly by Casdin Venture Opportunities Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Venture Opportunities Fund, LP, (ii) Casdin Venture Opportunities Fund GP, LLC, the general partner of Casdin Venture Opportunities Fund, LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Venture Opportunities Fund GP, LLC.

Series E Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-07-23 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2018-07-23 · Conversion · Disposed 1,333,333 · Balance 0

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Series E-1 Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-07-23 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2018-07-23 · Conversion · Disposed 342,435 · Balance 0

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Series F Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-07-23 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2018-07-23 · Conversion · Disposed 1,750,000 · Balance 0

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Series F Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-07-23 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2018-07-23 · Conversion · Disposed 1,750,000 · Balance 0

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F3: These securities are owned directly by Casdin Venture Opportunities Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Venture Opportunities Fund, LP, (ii) Casdin Venture Opportunities Fund GP, LLC, the general partner of Casdin Venture Opportunities Fund, LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Venture Opportunities Fund GP, LLC.

Filing footnotes · ownership attribution and instrument terms

F1: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

F3: These securities are owned directly by Casdin Venture Opportunities Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Venture Opportunities Fund, LP, (ii) Casdin Venture Opportunities Fund GP, LLC, the general partner of Casdin Venture Opportunities Fund, LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Venture Opportunities Fund GP, LLC.

Fulcrum Therapeutics, Inc.

Report date July 22, 2019 · Filed July 22, 2019

Jointly reported with Casdin Capital, LLC, Casdin Partners GP, LLC, Casdin Eli

Section 16 reporting ended · disclosed 2019-07-22. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee footnote604,285 Last balance in matching sequence After 2019-07-22 transaction · row 4 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
4 source rows

Row 1 · 2019-07-22 · Conversion · Acquired 464,285 · Balance 464,285

F1: On July 22, 2019, the Series B Preferred Stock converted into Common Stock on a seven-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date.

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Row 2 · 2019-07-22 · Purchase · Acquired 125,000 · Balance 589,285

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Row 3 · 2019-07-22 · Purchase · Acquired 10,000 · Balance 599,285

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Row 4 · 2019-07-22 · Purchase · Acquired 5,000 · Balance 604,285

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2019-07-22 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2019-07-22 · Conversion · Disposed 3,250,000 · Balance 0

F1: On July 22, 2019, the Series B Preferred Stock converted into Common Stock on a seven-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date.

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Filing footnotes · ownership attribution and instrument terms

F1: On July 22, 2019, the Series B Preferred Stock converted into Common Stock on a seven-for-one basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date.

F2: The securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

MAXCYTE, INC.

Report date October 03, 2022 · Filed October 05, 2022

Jointly reported with Casdin Capital, LLC, Casdin Partners GP, LLC, Casdin Eli

Section 16 reporting ended · disclosed 2022-10-05. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.01 per shareSEC Table I · non-derivativeDirect10,000,000 Reported balance After 2022-10-03 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2022-10-03 · Sale · Disposed 735,786 · Balance 10,000,000

F1: (1) The securities are owned directly by Casdin Partners Master Fund, LP (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC, the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Filing footnotes · ownership attribution and instrument terms

F1: (1) The securities are owned directly by Casdin Partners Master Fund, LP (the "Master Fund") and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to the Master Fund, (ii) Casdin Partners GP, LLC, the general partner of the Master Fund, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Verve Therapeutics, Inc.

Report date June 21, 2021 · Filed June 22, 2021

Section 16 reporting ended · disclosed 2021-06-22. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect2,417,596 Last balance in matching sequence After 2021-06-21 transaction · row 3 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
3 source rows

Row 1 · 2021-06-21 · Conversion · Acquired 1,007,311 · Balance 1,007,311

F1: The Series A-2 Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series A-2 Preferred Stock had no expiration date.

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

Row 2 · 2021-06-21 · Conversion · Acquired 310,285 · Balance 1,317,596

F3: The Series B Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series B Preferred Stock had no expiration date.

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

Row 3 · 2021-06-21 · Purchase · Acquired 1,100,000 · Balance 2,417,596

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

Series A-2 Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2021-06-21 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2021-06-21 · Conversion · Disposed 9,327,198 · Balance 0

F1: The Series A-2 Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series A-2 Preferred Stock had no expiration date.

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

Series B Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2021-06-21 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2021-06-21 · Conversion · Disposed 2,873,091 · Balance 0

F3: The Series B Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series B Preferred Stock had no expiration date.

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: The Series A-2 Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series A-2 Preferred Stock had no expiration date.

F2: The shares reflected as beneficially owned by Casdin Partners Master Fund, LP are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (iii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC. Each of Casdin Capital, LLC, Casdin Partners GP, LLC and Eli Casdin disclaims beneficial ownership of such securities except to the extent of their respective pecuniary interest therein.

F3: The Series B Preferred Stock converted into shares of the Issuer's common stock, $0.001 par value, on an approximately 9.2595:1 basis automatically immediately prior to the closing of the Issuer's initial public offering. The Series B Preferred Stock had no expiration date.

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
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionSeries F Preferred Stock · Derivative 1,750,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · derivative · entry 7

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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 · 158,960 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: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.exercise_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.expiration_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F3 · ownership.direct: These securities are owned directly by Casdin Venture Opportunities Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Venture Opportunities Fund, LP, (ii) Casdin Venture Opportunities Fund GP, LLC, the general partner of Casdin Venture Opportunities Fund, LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Venture Opportunities Fund GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionSeries F Preferred Stock · Derivative 1,750,000 $0.00 $0.00
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · derivative · entry 6

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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 · 158,963 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: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.exercise_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.expiration_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2 · ownership.direct: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionSeries E-1 Preferred Stock · Derivative 342,435 $0.00 $0.00
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · derivative · entry 5

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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 · 31,104 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: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.exercise_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.expiration_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2 · ownership.direct: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionSeries E Preferred Stock · Derivative 1,333,333 $0.00 $0.00
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · derivative · entry 4

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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 · 155,716 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: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.exercise_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F1 · derivative.expiration_date: On July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2 · ownership.direct: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionCommon Stock 158,960 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · nonDerivative · entry 3

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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: 158,960

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 July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F3 · ownership.direct: These securities are owned directly by Casdin Venture Opportunities Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Venture Opportunities Fund, LP, (ii) Casdin Venture Opportunities Fund GP, LLC, the general partner of Casdin Venture Opportunities Fund, LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Venture Opportunities Fund GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 PurchaseCommon Stock 266,667 $15.00 $4,000,005.00
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · nonDerivative · entry 2

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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: 612,450

F2 · ownership.direct: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Read SEC document
July 23, 2018 Filed Jul 23, 2018 20:12 UTC CONSTELLATION PHARMACEUTICALS INC CNST · Entity 137050 ConversionCommon Stock 345,783 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-18-020457 · doc4.xml · nonDerivative · entry 1

Casdin Capital, LLC · CIK 0001534261 · 10% owner

Casdin Partners Master Fund, L.P. · CIK 0001534265 · 10% owner

Casdin Partners GP, LLC · CIK 0001534260 · 10% owner

Casdin Eli · CIK 0001534264 · 10% owner

Casdin Venture Opportunities Fund, L.P. · CIK 0001730779 · 10% owner

CASDIN VENTURE OPPORTUNITIES FUND GP, LLC · CIK 0001746899 · 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: 345,783

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 July 23, 2018, the Series E-1 and Series F Preferred Stock converted into Common Stock on a 11.009-for-one basis, and the Series E Preferred Stock converted into Common Stock on a 8.56256-for-one basis, upon the closing of the Issuer's initial public offering without payment of consideration. The Series E, Series E-1 and Series F Preferred Stock were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial pubic offering. The shares had no expiration date.

F2 · ownership.direct: These securities are owned directly by Casdin Partners Master Fund, LP and may be deemed to be indirectly beneficially owned by (i) Casdin Capital, LLC, the investment adviser to Casdin Partners Master Fund, LP, (ii) Casdin Partners GP, LLC, the general partner of Casdin Partners Master Fund LP, and (ii) Eli Casdin, the managing member of Casdin Capital, LLC and Casdin Partners GP, LLC.

Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.