organization · Reporting owner

ARCH Venture Partners X Overage, L.P.

Disclosed activity across 8 companies

Tapewire entity: 32126
SEC CIK: 0001768905

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
Boundless Bio, Inc.BOLD · Entity 7063	10% owner	July 01, 2026	July 06, 2026
Maze Therapeutics, Inc.MAZE · Entity 1775	10% owner	January 30, 2025	January 30, 2025
Neumora Therapeutics, Inc.NMRA · Entity 6115	10% owner	October 27, 2025	October 29, 2025
Prime Medicine, Inc.PRME · Entity 5281	10% owner	August 01, 2025	August 01, 2025
Sana Biotechnology, Inc.SANA · Entity 4870	10% owner	February 08, 2024	February 12, 2024
Sienna Biopharmaceuticals, Inc.SNNA · Entity 154554	10% owner	February 22, 2019	February 26, 2019

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.

Boundless Bio, Inc.

Report date July 01, 2026 · Filed July 06, 2026

Jointly reported with ARCH Venture Fund IX, L.P., ARCH Venture Fund IX Overage, L.P., ARCH Venture Fund X Overage, L.P., ARCH Venture Partners IX, L.P., ARCH Venture Partners IX Overage, L.P., ARCH Venture Partners IX, LLC, ARCH Venture Partners X, LLC

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee footnote	0	Last balance in matching sequence After 2026-07-01 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified. 2 source rows Row 1 · 2026-07-01 · Exercise / conversion · Acquired 16,000 · Balance 16,000 F1: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer. Row 2 · 2026-07-01 · Sale · Disposed 16,000 · Balance 0 F1: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.
Stock Option (right to buy)SEC Table II · derivative / convertible security · Conversion / exercise price $1.03 · Expires 2035-06-22	IndirectSee footnote	0	Reported balance After 2026-07-01 transaction · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · 2026-07-01 · Exercise / conversion · Disposed 16,000 · Balance 0 F7: The stock option vested in substantially equal monthly installments over the 11 months following June 23, 2025. The final unvested portion vested on June 15, 2026, the date of the Issuer's 2026 annual meeting of stockholders. F1: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.
Common StockSEC Table I · non-derivative	IndirectSee footnotes	683,759	Reported balance Holding disclosure · report date 2026-07-01 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 683,759 F2: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F4: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectSee footnotes	828,570	Reported balance Holding disclosure · report date 2026-07-01 · row 4 Holding and transaction disclosures are not merged. 1 source row Row 4 · Balance 828,570 F3: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. F4: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectSee footnotes	1,181,766	Reported balance Holding disclosure · report date 2026-07-01 · row 5 Holding and transaction disclosures are not merged. 1 source row Row 5 · Balance 1,181,766 F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any.

Filing footnotes · ownership attribution and instrument terms

F1: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer.

F2: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX.

F3: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage.

F4: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any.

F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage.

F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any.

F7: The stock option vested in substantially equal monthly installments over the 11 months following June 23, 2025. The final unvested portion vested on June 15, 2026, the date of the Issuer's 2026 annual meeting of stockholders.

Maze Therapeutics, Inc.

Report date January 30, 2025 · Filed January 30, 2025

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Partners X, L.P., ARCH Venture Fund X, L.P., ARCH Venture Fund X Overage, L.P., NELSEN ROBERT, CRANDELL KEITH, Burow Kristina, GILLIS STEVEN

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Series A Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 1 Instrument identity requires review; Table II rows are not merged. 1 source row Row 1 · Balance Not disclosed F1: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series A Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series A Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for- 0.1037236801. The securities have no expiration date. F2: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.
Series A Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X Overage, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 2 Instrument identity requires review; Table II rows are not merged. 1 source row Row 2 · Balance Not disclosed F1: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series A Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series A Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for- 0.1037236801. The securities have no expiration date. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage.
Series B Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · Balance Not disclosed F5: Pursuant to the Issuer's Restated Certificate of Incorporation, upon closing of the Issuer's initial public offering of its Common Stock, each share of Series B Convertible Preferred Stock automatically converted into shares of Common Stock at a ratio of 1-for- 0.1211056427. The securities have no expiration date. F2: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.
Series B Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X Overage, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · Balance Not disclosed F5: Pursuant to the Issuer's Restated Certificate of Incorporation, upon closing of the Issuer's initial public offering of its Common Stock, each share of Series B Convertible Preferred Stock automatically converted into shares of Common Stock at a ratio of 1-for- 0.1211056427. The securities have no expiration date. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage.
Series D-1 Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 5 Instrument identity requires review; Table II rows are not merged. 1 source row Row 5 · Balance Not disclosed F6: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series D-1 Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series D-1 Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for-0.1037236801. The securities have no expiration date. F2: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.
Series D-1 Preferred StockSEC Table II · derivative / convertible security	IndirectARCH Venture Fund X Overage, L.P.	Not disclosed	Reported balance Holding disclosure · report date 2025-01-30 · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · Balance Not disclosed F6: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series D-1 Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series D-1 Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for-0.1037236801. The securities have no expiration date. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage.

Filing footnotes · ownership attribution and instrument terms

F1: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series A Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series A Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for- 0.1037236801. The securities have no expiration date.

F2: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X.

F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.

F4: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage.

F5: Pursuant to the Issuer's Restated Certificate of Incorporation, upon closing of the Issuer's initial public offering of its Common Stock, each share of Series B Convertible Preferred Stock automatically converted into shares of Common Stock at a ratio of 1-for- 0.1211056427. The securities have no expiration date.

F6: Pursuant to the Issuer's Restated Certificate of Incorporation, each share of Series D-1 Convertible Preferred Stock may be converted, at the option of the holder, at any time. In connection with the completion of the Issuer's initial public offering of its Common Stock, each share of Series D-1 Convertible Preferred Stock shall automatically convert into shares of Common Stock at a ratio of 1-for-0.1037236801. The securities have no expiration date.

Neumora Therapeutics, Inc.

Report date October 27, 2025 · Filed October 29, 2025

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Fund X, L.P., ARCH Venture Partners X, L.P., ARCH Venture Fund X Overage, L.P., ARCH Venture Partners VII, LLC, ARCH Venture Partners VII, L.P., ARCH Venture Fund VII, L.P., ARCH Venture Partners VIII, LLC, ARCH Venture Fund VIII Overage, L.P.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund XII, L.P.	6,046,907	Reported balance After 2025-10-27 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2025-10-27 · Purchase · Acquired 1,915,700 · Balance 6,046,907 F1: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund VII, L.P.	1,387,228	Reported balance Holding disclosure · report date 2025-10-27 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 1,387,228 F2: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund VIII Overage, L.P.	2,321,566	Reported balance Holding disclosure · report date 2025-10-27 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 2,321,566 F3: Represents shares held directly by ARCH Venture Fund VIII Overage, L.P. (ARCH VIII Overage). ARCH Venture Partners VIII, LLC (AVP VIII LLC) is the general partner of ARCH VIII Overage. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VIII LLC (the AVP VIII LLC Managing Directors). AVP VIII LLC may be deemed to beneficially own the shares held by ARCH VIII Overage, and each of the AVP VIII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VIII Overage. Each of AVP VIII LLC and the AVP VIII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X, L.P.	12,205,379	Reported balance Holding disclosure · report date 2025-10-27 · row 4 Holding and transaction disclosures are not merged. 1 source row Row 4 · Balance 12,205,379 F4: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X Overage, L.P.	11,886,758	Reported balance Holding disclosure · report date 2025-10-27 · row 5 Holding and transaction disclosures are not merged. 1 source row Row 5 · Balance 11,886,758 F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.

F2: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.

F3: Represents shares held directly by ARCH Venture Fund VIII Overage, L.P. (ARCH VIII Overage). ARCH Venture Partners VIII, LLC (AVP VIII LLC) is the general partner of ARCH VIII Overage. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VIII LLC (the AVP VIII LLC Managing Directors). AVP VIII LLC may be deemed to beneficially own the shares held by ARCH VIII Overage, and each of the AVP VIII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VIII Overage. Each of AVP VIII LLC and the AVP VIII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.

F4: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X.

F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage.

F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any.

Prime Medicine, Inc.

Report date August 01, 2025 · Filed August 01, 2025

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Partners X, L.P., ARCH Venture Fund X, L.P., ARCH Venture Fund X Overage, L.P., CRANDELL KEITH, Burow Kristina, GILLIS STEVEN

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund XII, L.P.	6,230,300	Reported balance After 2025-08-01 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 3 · 2025-08-01 · Purchase · Acquired 3,030,300 · Balance 6,230,300 F4: Represents shares held directly by ARCH Venture Fund XII, L.P. ("ARCH XII"). ARCH Venture Partners XII, L.P. ("AVP XII LP") is the general partner of ARCH XII. ARCH Venture Partners XII, LLC ("AVP XII LLC") is the general partner of AVP XII LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP XII LLC (the "AVP XII LLC Committee Members"). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X, L.P.	6,128,297	Reported balance Holding disclosure · report date 2025-08-01 · row 1 Holding and transaction disclosures are not merged. 1 source row Row 1 · Balance 6,128,297 F1: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X Overage, L.P.	6,128,297	Reported balance Holding disclosure · report date 2025-08-01 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 6,128,297 F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage. F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X.

F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage.

F3: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose.

F4: Represents shares held directly by ARCH Venture Fund XII, L.P. ("ARCH XII"). ARCH Venture Partners XII, L.P. ("AVP XII LP") is the general partner of ARCH XII. ARCH Venture Partners XII, LLC ("AVP XII LLC") is the general partner of AVP XII LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP XII LLC (the "AVP XII LLC Committee Members"). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any.

Sana Biotechnology, Inc.

Report date February 08, 2024 · Filed February 12, 2024

Jointly reported with ARCH Venture Fund X, L.P., ARCH Venture Fund X Overage, L.P., ARCH Venture Fund IX, L.P., ARCH Venture Fund IX Overage, L.P., ARCH Venture Partners IX, L.P., ARCH Venture Partners IX Overage, L.P., ARCH Venture Partners X, L.P., ARCH Venture Partners IX, LLC, ARCH Venture Partners X, LLC

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee Footnote	10,667,387	Reported balance After 2024-02-08 transaction · row 1 Holding and transaction disclosures are not merged. 1 source row Row 1 · 2024-02-08 · Purchase · Acquired 363,637 · Balance 10,667,387 F1: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F3: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Footnote	12,446,022	Reported balance After 2024-02-08 transaction · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · 2024-02-08 · Purchase · Acquired 727,272 · Balance 12,446,022 F4: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Footnote	12,446,022	Reported balance After 2024-02-08 transaction · row 4 Holding and transaction disclosures are not merged. 1 source row Row 4 · 2024-02-08 · Purchase · Acquired 727,272 · Balance 12,446,022 F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee Footnote	10,301,250	Reported balance Holding disclosure · report date 2024-02-08 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 10,301,250 F2: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. F3: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX.

F2: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage.

F3: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein.

F4: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X.

F5: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage.

F6: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

Sienna Biopharmaceuticals, Inc.

Report date February 22, 2019 · Filed February 26, 2019

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Fund X Overage, L.P., CRANDELL KEITH, NELSEN ROBERT, GILLIS STEVEN

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectSee footnote	2,900,575	Reported balance After 2019-02-22 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2019-02-22 · Purchase · Acquired 150,000 · Balance 2,900,575 F1: Following the transactions reported herein, includes 1,032,493 shares of common stock held of record by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage"), 2,900,575 shares of common stock held of record by ARCH Venture Fund VIII, L.P. ("ARCH Fund VIII"), and 1,865,800 shares of common stock held of record by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). F2: The sole general partner of ARCH Fund VIII is ARCH Venture Partners VIII, L.P. ("ARCH Partners VIII"). The sole general partner of ARCH Partners VIII and ARCH Fund Overage is ARCH Venture Partners VIII, LLC ("ARCH VIII LLC"). ARCH Partners VIII may therefore be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH VIII LLC may be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH Fund Overage. ARCH Partners VIII and ARCH VIII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VIII LLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH Fund VIII and ARCH Fund Overage. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee footnote	1,032,493	Reported balance After 2019-02-22 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2019-02-22 · Purchase · Acquired 150,000 · Balance 1,032,493 F1: Following the transactions reported herein, includes 1,032,493 shares of common stock held of record by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage"), 2,900,575 shares of common stock held of record by ARCH Venture Fund VIII, L.P. ("ARCH Fund VIII"), and 1,865,800 shares of common stock held of record by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). F2: The sole general partner of ARCH Fund VIII is ARCH Venture Partners VIII, L.P. ("ARCH Partners VIII"). The sole general partner of ARCH Partners VIII and ARCH Fund Overage is ARCH Venture Partners VIII, LLC ("ARCH VIII LLC"). ARCH Partners VIII may therefore be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH VIII LLC may be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH Fund Overage. ARCH Partners VIII and ARCH VIII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VIII LLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH Fund VIII and ARCH Fund Overage. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectSee footnote	1,865,800	Reported balance After 2019-02-22 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 3 · 2019-02-22 · Purchase · Acquired 1,865,800 · Balance 1,865,800 F1: Following the transactions reported herein, includes 1,032,493 shares of common stock held of record by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage"), 2,900,575 shares of common stock held of record by ARCH Venture Fund VIII, L.P. ("ARCH Fund VIII"), and 1,865,800 shares of common stock held of record by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). F3: The sole general Partner of ARCH X Overage is ARCH Venture Partners X Overage, L.P. ("AVP X Over GP"). The sole general partner of AVP X Over GP is ARCH Venture Partners X, LLC ("AVP X LLC"). AVP X Over LP and AVP X LLC may therefore be deemed to beneficially own the securities held by ARCH X Overage. AVP X Over GP and AVP X LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. Keith L. Crandell, Robert Nelsen and Steven Gillis are managing directors of AVP X LLC, and they may be deemed to beneficially own the shares held by ARCH X Overage. Messrs. Crandell, Nelsen and Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Following the transactions reported herein, includes 1,032,493 shares of common stock held of record by ARCH Venture Fund VIII Overage, L.P. ("ARCH Fund Overage"), 2,900,575 shares of common stock held of record by ARCH Venture Fund VIII, L.P. ("ARCH Fund VIII"), and 1,865,800 shares of common stock held of record by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage").

F2: The sole general partner of ARCH Fund VIII is ARCH Venture Partners VIII, L.P. ("ARCH Partners VIII"). The sole general partner of ARCH Partners VIII and ARCH Fund Overage is ARCH Venture Partners VIII, LLC ("ARCH VIII LLC"). ARCH Partners VIII may therefore be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH VIII LLC may be deemed to beneficially own the securities held by ARCH Fund VIII and ARCH Fund Overage. ARCH Partners VIII and ARCH VIII LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. The managing directors of ARCH VIII LLC are Keith L. Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by ARCH Fund VIII and ARCH Fund Overage. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: The sole general Partner of ARCH X Overage is ARCH Venture Partners X Overage, L.P. ("AVP X Over GP"). The sole general partner of AVP X Over GP is ARCH Venture Partners X, LLC ("AVP X LLC"). AVP X Over LP and AVP X LLC may therefore be deemed to beneficially own the securities held by ARCH X Overage. AVP X Over GP and AVP X LLC disclaim beneficial ownership of such securities, except to the extent of any pecuniary interest therein. Keith L. Crandell, Robert Nelsen and Steven Gillis are managing directors of AVP X LLC, and they may be deemed to beneficially own the shares held by ARCH X Overage. Messrs. Crandell, Nelsen and Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Past disclosures · reporting ended (2)

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

Erasca, Inc.

Report date July 20, 2021 · Filed July 21, 2021

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Fund X, L.P., ARCH Venture Fund X Overage, L.P., ARCH Venture Partners X, L.P., NELSEN ROBERT, CRANDELL KEITH, Burow Kristina, GILLIS STEVEN

Section 16 reporting ended · disclosed 2021-07-21. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X, L.P.	5,527,777	Reported balance After 2021-07-20 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2021-07-20 · Conversion · Acquired 5,527,777 · Balance 5,527,777 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Common StockSEC Table I · non-derivative	IndirectBy ARCH Venture Fund X Overage, L.P.	5,527,777	Reported balance After 2021-07-20 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2021-07-20 · Conversion · Acquired 5,527,777 · Balance 5,527,777 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series A Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X, L.P.	0	Reported balance After 2021-07-20 transaction · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · 2021-07-20 · Conversion · Disposed 2,100,000 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series A Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X Overage, L.P.	0	Reported balance After 2021-07-20 transaction · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · 2021-07-20 · Conversion · Disposed 2,100,000 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series B-1 Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X, L.P.	0	Reported balance After 2021-07-20 transaction · row 5 Instrument identity requires review; Table II rows are not merged. 1 source row Row 5 · 2021-07-20 · Conversion · Disposed 3,400,000 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series B-2 Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X, L.P.	0	Reported balance After 2021-07-20 transaction · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · 2021-07-20 · Conversion · Disposed 1,133,333 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series B-1 Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X Overage, L.P.	0	Reported balance After 2021-07-20 transaction · row 7 Instrument identity requires review; Table II rows are not merged. 1 source row Row 7 · 2021-07-20 · Conversion · Disposed 3,400,000 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.
Series B-2 Preferred StockSEC Table II · derivative / convertible security · Conversion / exercise price $0.00	IndirectBy ARCH Venture Fund X Overage, L.P.	0	Reported balance After 2021-07-20 transaction · row 8 Instrument identity requires review; Table II rows are not merged. 1 source row Row 8 · 2021-07-20 · Conversion · Disposed 1,133,333 · Balance 0 F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering.

F2: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage.

F3: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein.

Verve Therapeutics, Inc.

Report date June 21, 2021 · Filed June 23, 2021

Jointly reported with ARCH Venture Partners X, LLC, ARCH Venture Fund X, L.P., ARCH Venture Fund X Overage, L.P., ARCH Venture Partners X, L.P., CRANDELL KEITH, NELSEN ROBERT, Burow Kristina, GILLIS STEVEN

Section 16 reporting ended · disclosed 2021-06-23. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common Stock, par value $0.001SEC Table I · non-derivative	IndirectARCH Venture Fund X, L.P.	1,254,404	Reported balance After 2021-06-21 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 1 · 2021-06-21 · Conversion · Acquired 1,254,404 · Balance 1,254,404 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F1: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Common Stock, par value $0.001SEC Table I · non-derivative	IndirectARCH Venture Fund X Overage, L.P.	1,254,405	Reported balance After 2021-06-21 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes. 1 source row Row 2 · 2021-06-21 · Conversion · Acquired 1,254,405 · Balance 1,254,405 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Series A Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Footnotes	0	Reported balance After 2021-06-21 transaction · row 3 Instrument identity requires review; Table II rows are not merged. 1 source row Row 3 · 2021-06-21 · Conversion · Disposed 7,107,024 · Balance 0 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F5: The expiration date is not relevant to the conversion of these securities. F1: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Series A Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Footnotes	0	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 7,107,023 · Balance 0 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F5: The expiration date is not relevant to the conversion of these securities. F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Series A-2 Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Footnotes	0	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 4,508,144 · Balance 0 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F5: The expiration date is not relevant to the conversion of these securities. F1: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.
Series A-2 Convertible Preferred StockSEC Table II · derivative / convertible security	IndirectSee Footnotes	0	Reported balance After 2021-06-21 transaction · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · 2021-06-21 · Conversion · Disposed 4,508,146 · Balance 0 F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering. F5: The expiration date is not relevant to the conversion of these securities. F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X.

F2: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage.

F3: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Robert Nelsen, Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein.

F4: The shares of Issuer's Preferred Stock converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-9.2595 basis immediately prior to the consummation of Issuer's initial public offering.

F5: The expiration date is not relevant to the conversion of these securities.

Transaction history

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Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
July 01, 2026 Filed Jul 6, 2026 21:43 UTC	Boundless Bio, Inc. BOLD · Entity 7063	Exercise / conversionStock Option (right to buy) · Derivative	16,000	$0.00 Strike: $1.03	$0.00	Disclosure SEC source: 0001012975-26-000621 · form4.xml · derivative · entry 6 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 0 Underlying: Common Stock · 16,000 shares Expires 2035-06-22 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. F7 · derivative.exercise_date: The stock option vested in substantially equal monthly installments over the 11 months following June 23, 2025. The final unvested portion vested on June 15, 2026, the date of the Issuer's 2026 annual meeting of stockholders. F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer. Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:43 UTC	Boundless Bio, Inc. BOLD · Entity 7063	SaleCommon Stock	16,000	$2.49	$39,840.00	Disclosure SEC source: 0001012975-26-000621 · form4.xml · nonDerivative · entry 2 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 0 F1 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer. Read SEC document
July 01, 2026 Filed Jul 6, 2026 21:43 UTC	Boundless Bio, Inc. BOLD · Entity 7063	Exercise / conversionCommon Stock	16,000	$1.03	$16,480.00	Disclosure SEC source: 0001012975-26-000621 · form4.xml · nonDerivative · entry 1 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote Disclosed balance after: 16,000 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 · ownership.nature: Represents a cashless stock option exercise by Kristina Burow. The net proceeds of such exercise were remitted to ARCH Venture Fund IX, L.P. (ARCH IX), ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage), and ARCH Venture Fund X, L.P. (AVF X Overage LP). The stock option was granted to Kristina Burow in connection with her service on the board of directors of the Issuer. Read SEC document
October 27, 2025 Filed Oct 29, 2025 23:19 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	PurchaseCommon Stock	1,915,700	$2.61	$4,999,977.00	Disclosure SEC source: 0001012975-25-000679 · form4.xml · nonDerivative · entry 1 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 6,046,907 F1 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
August 01, 2025 Filed Aug 1, 2025 23:18 UTC	Prime Medicine, Inc. PRME · Entity 5281	PurchaseCommon Stock	3,030,300	$3.30	$9,999,990.00	Disclosure SEC source: 0001062993-25-013460 · form4.xml · nonDerivative · entry 3 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 6,230,300 F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. ("ARCH XII"). ARCH Venture Partners XII, L.P. ("AVP XII LP") is the general partner of ARCH XII. ARCH Venture Partners XII, LLC ("AVP XII LLC") is the general partner of AVP XII LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP XII LLC (the "AVP XII LLC Committee Members"). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries C Convertible Preferred Stock · Derivative	366,301	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 12 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 366,301 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries C Convertible Preferred Stock · Derivative	201,465	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 11 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 201,465 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries C Convertible Preferred Stock · Derivative	164,835	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 10 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 164,835 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries B Convertible Preferred Stock · Derivative	227,920	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 9 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 227,920 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries A Convertible Preferred Stock · Derivative	454,212	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 8 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 454,212 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries A Convertible Preferred Stock · Derivative	586,080	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 7 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 586,080 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionSeries A Convertible Preferred Stock · Derivative	424,908	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · derivative · entry 6 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 0 Underlying: Common Stock · 424,908 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · price: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	PurchaseCommon Stock	133,333	$16.00	$2,133,328.00	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · nonDerivative · entry 5 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 1,181,766 F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. F8 · ownership.nature: Represents shares purchased by ARCH X Overage in the Issuer's initial public offering. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	PurchaseCommon Stock	66,667	$16.00	$1,066,672.00	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · nonDerivative · entry 4 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 683,759 F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. F7 · ownership.nature: Represents shares purchased by ARCH IX in the Issuer's initial public offering. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionCommon Stock	1,048,433	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · nonDerivative · entry 3 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 1,048,433 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of AVP X Overage LP. Keith Crandell, Robert Nelsen and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X Overage, AVP X LLC may be deemed to beneficially own the shares held by ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X Overage. AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionCommon Stock	787,545	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · nonDerivative · entry 2 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 828,570 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX Overage, L.P. (ARCH IX Overage). ARCH Venture Partners IX Overage, L.P. (AVP IX Overage LP) is the sole general partner of ARCH IX Overage. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
April 02, 2024 Filed Apr 4, 2024 20:30 UTC	Boundless Bio, Inc. BOLD · Entity 7063	ConversionCommon Stock	589,743	Not disclosed	Not disclosed	Disclosure SEC source: 0000950170-24-041841 · ownership.xml · nonDerivative · entry 1 ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See footnotes Disclosed balance after: 617,092 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: Each share of the Issuer's preferred stock is convertible into shares of the Issuer's common stock and has no expiration date. The preferred stock automatically converted into common stock upon the closing of the Issuer's initial public offering. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F4 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell, Robert Nelsen and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein, if any. Read SEC document
February 15, 2024 Filed Feb 20, 2024 22:37 UTC	Prime Medicine, Inc. PRME · Entity 5281	PurchaseCommon Stock	3,200,000	$6.25	$20,000,000.00	Disclosure SEC source: 0001062993-24-003738 · form4.xml · nonDerivative · entry 3 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 3,200,000 F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. ("ARCH XII"). ARCH Venture Partners XII, L.P. ("AVP XII LP") is the general partner of ARCH XII. ARCH Venture Partners XII, LLC ("AVP XII LLC") is the general partner of AVP XII LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP XII LLC (the "AVP XII LLC Committee Members"). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
February 08, 2024 Filed Feb 12, 2024 17:43 UTC	Sana Biotechnology, Inc. SANA · Entity 4870	PurchaseCommon Stock	727,272	$5.50	$3,999,996.00	Disclosure SEC source: 0001062993-24-002840 · form4.xml · nonDerivative · entry 4 ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnote Disclosed balance after: 12,446,022 F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2024 Filed Feb 12, 2024 17:43 UTC	Sana Biotechnology, Inc. SANA · Entity 4870	PurchaseCommon Stock	727,272	$5.50	$3,999,996.00	Disclosure SEC source: 0001062993-24-002840 · form4.xml · nonDerivative · entry 3 ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnote Disclosed balance after: 12,446,022 F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein. Read SEC document
February 08, 2024 Filed Feb 12, 2024 17:43 UTC	Sana Biotechnology, Inc. SANA · Entity 4870	PurchaseCommon Stock	363,637	$5.50	$2,000,003.50	Disclosure SEC source: 0001062993-24-002840 · form4.xml · nonDerivative · entry 1 ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Fund IX, L.P. · CIK 0001666306 · 10% owner ARCH Venture Fund IX Overage, L.P. · CIK 0001666307 · 10% owner ARCH Venture Partners IX, L.P. · CIK 0001723173 · 10% owner ARCH Venture Partners IX Overage, L.P. · CIK 0001723172 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners IX, LLC · CIK 0001723174 · 10% owner ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · See Footnote Disclosed balance after: 10,667,387 F1 · ownership.nature: Represents shares held directly by ARCH Venture Fund IX, L.P. (ARCH IX). ARCH Venture Partners IX, L.P. (AVP IX LP) is the sole general partner of ARCH IX. F3 · ownership.nature: ARCH Venture Partners IX, LLC (AVP IX LLC) is the sole general partner of each of AVP IX LP and AVP IX Overage LP. Keith Crandell and Clinton Bybee are managing directors of AVP IX LLC (the AVP IX MDs). AVP IX LP and AVP IX Overage LP may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, respectively, AVP IX LLC may be deemed to beneficially own the shares held by ARCH IX and ARCH IX Overage, and each of the AVP IX MDs may be deemed to share the power to direct the disposition and vote of the shares held by ARCH IX and ARCH IX Overage. AVP IX LP, AVP IX Overage LP, AVP IX LLC, and the AVP IX MDs each disclaim beneficial ownership except to to the extent of any pecuniary interest therein. Read SEC document
December 08, 2023 Filed Dec 13, 2023 00:52 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	OtherCommon Stock	1,176,593	Not disclosed	Not disclosed	Disclosure SEC source: 0001062993-23-022480 · form4.xml · nonDerivative · entry 2 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VIII Overage, L.P. Disclosed balance after: 2,321,566 F1 · kind: Represents shares received as contingent consideration as a result of the completion of a contractual milestone being achieved by the Issuer. Issuer acquired Blackthorn Therapeutics, Inc. and agreed to pay in cash or in stock, at Issuer's discretion, to former stockholders of BlackThorn Therapeutics upon satisfaction of certain contractual milestones. Shares were received without any action by Reporting Persons. No additional consideration was paid for the shares. F2 · price: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund VIII Overage, L.P. (ARCH VIII Overage). ARCH Venture Partners VIII, LLC (AVP VIII LLC) is the general partner of ARCH VIII Overage. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VIII LLC (the AVP VIII LLC Managing Directors). AVP VIII LLC may be deemed to beneficially own the shares held by ARCH VIII Overage, and each of the AVP VIII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VIII Overage. Each of AVP VIII LLC and the AVP VIII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
December 08, 2023 Filed Dec 13, 2023 00:52 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	OtherCommon Stock	703,061	Not disclosed	Not disclosed	Disclosure SEC source: 0001062993-23-022480 · form4.xml · nonDerivative · entry 1 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VII, L.P. Disclosed balance after: 1,387,228 F1 · kind: Represents shares received as contingent consideration as a result of the completion of a contractual milestone being achieved by the Issuer. Issuer acquired Blackthorn Therapeutics, Inc. and agreed to pay in cash or in stock, at Issuer's discretion, to former stockholders of BlackThorn Therapeutics upon satisfaction of certain contractual milestones. Shares were received without any action by Reporting Persons. No additional consideration was paid for the shares. F1 · price: Represents shares received as contingent consideration as a result of the completion of a contractual milestone being achieved by the Issuer. Issuer acquired Blackthorn Therapeutics, Inc. and agreed to pay in cash or in stock, at Issuer's discretion, to former stockholders of BlackThorn Therapeutics upon satisfaction of certain contractual milestones. Shares were received without any action by Reporting Persons. No additional consideration was paid for the shares. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionSeries B Preferred Stock · Derivative	2,124,143	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · derivative · entry 11 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 0 Underlying: Common Stock · 2,124,143 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · price: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F7 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionSeries A-2 Preferred Stock · Derivative	6,576,400	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · derivative · entry 10 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 6,576,400 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · price: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionSeries A-2 Preferred Stock · Derivative	6,895,021	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · derivative · entry 9 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 0 Underlying: Common Stock · 6,895,021 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · price: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionSeries A-1 Preferred Stock · Derivative	1,144,973	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · derivative · entry 8 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VIII Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 1,144,973 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · price: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund VIII Overage, L.P. (ARCH VIII Overage). ARCH Venture Partners VIII, LLC (AVP VIII LLC) is the general partner of ARCH VIII Overage. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VIII LLC (the AVP VIII LLC Managing Directors). AVP VIII LLC may be deemed to beneficially own the shares held by ARCH VIII Overage, and each of the AVP VIII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VIII Overage. Each of AVP VIII LLC and the AVP VIII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionSeries A-1 Preferred Stock · Derivative	684,167	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · derivative · entry 7 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VII, L.P. Disclosed balance after: 0 Underlying: Common Stock · 684,167 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · price: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	PurchaseCommon Stock	1,500,000	$17.00	$25,500,000.00	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 6 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 3,624,143 F7 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionCommon Stock	2,124,143	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 5 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund XII, L.P. Disclosed balance after: 2,124,143 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F7 · ownership.nature: Represents shares held directly by ARCH Venture Fund XII, L.P. (ARCH XII). ARCH Venture Partners XII, L.P. (AVP XII LP) is the general partner of ARCH XII. ARCH Venture Partners XII, LLC (AVP XII LLC) is the general partner of AVP XII LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP XII LLC (the AVP XII LLC Committee Members). Each of AVP XII LP and AVP XII LLC may be deemed to beneficially own the shares held by ARCH XII, and each of the AVP XII LLC Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH XII. Each of AVP XII LP, AVP XII LLC and the AVP XII LLC Committee Members disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionCommon Stock	6,576,400	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 4 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 11,886,758 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F5 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH X Overage. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionCommon Stock	6,895,021	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 3 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 12,205,379 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH X. F6 · ownership.nature: ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. Each of AVP X LP, AVP X Overage LP, AVP X LLC and the AVP X Committee Members disclaims beneficial ownership of such shares except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionCommon Stock	1,144,973	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 2 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VIII Overage, L.P. Disclosed balance after: 1,144,973 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F3 · ownership.nature: Represents shares held directly by ARCH Venture Fund VIII Overage, L.P. (ARCH VIII Overage). ARCH Venture Partners VIII, LLC (AVP VIII LLC) is the general partner of ARCH VIII Overage. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VIII LLC (the AVP VIII LLC Managing Directors). AVP VIII LLC may be deemed to beneficially own the shares held by ARCH VIII Overage, and each of the AVP VIII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VIII Overage. Each of AVP VIII LLC and the AVP VIII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
September 19, 2023 Filed Sep 20, 2023 10:15 UTC	Neumora Therapeutics, Inc. NMRA · Entity 6115	ConversionCommon Stock	684,167	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-23-019273 · doc4.xml · nonDerivative · entry 1 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Partners VII, LLC · CIK 0001544443 · 10% owner ARCH Venture Partners VII, L.P. · CIK 0001544444 · 10% owner ARCH Venture Fund VII, L.P. · CIK 0001402439 · 10% owner ARCH Venture Partners VIII, LLC · CIK 0001616165 · 10% owner ARCH Venture Fund VIII Overage, L.P. · CIK 0001617237 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Indirect · By ARCH Venture Fund VII, L.P. Disclosed balance after: 684,167 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: The shares of Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock of the Issuer automatically converted on a 1-for-1 basis into Common Stock of the Issuer immediately prior to the closing of the Issuer's initial public offering. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund VII, L.P. (ARCH VII). ARCH Venture Partners VII, L.P. (AVP VII LP) is the sole general partner of ARCH VII, and ARCH Venture Partners VII, LLC (AVP VII LLC) is the sole general partner of AVP VII LP. Clinton Bybee, Keith Crandell and Robert Nelsen are the managing directors of AVP VII LLC (AVP VII LLC Managing Directors). AVP VII LP and AVP VII LLC may be deemed to beneficially own the shares held by ARCH VII, and each of the AVP VII LLC Managing Directors may be deemed to share the power to direct the disposition and vote of the shares held by ARCH VII. Each of AVP VII LP, AVP VII LLC and the AVP VII LLC Managing Directors disclaims beneficial ownership except to the extent of their pecuniary interest therein, if any. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionSeries B Convertible Preferred Stock · Derivative	1,141,474	$0.00	$0.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · derivative · entry 8 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 367,175 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. F5 · derivative.exercise_price: Reflects shares purchased by ARCH X in the Issuer's initial public offering. F5 · derivative.exercise_date: Reflects shares purchased by ARCH X in the Issuer's initial public offering. F5 · derivative.expiration_date: Reflects shares purchased by ARCH X in the Issuer's initial public offering. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionSeries B Convertible Preferred Stock · Derivative	1,141,474	$0.00	$0.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · derivative · entry 7 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 0 Underlying: Common Stock · 367,175 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: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.exercise_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.expiration_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionSeries A Convertible Preferred Stock · Derivative	16,666,664	$0.00	$0.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · derivative · entry 6 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 5,361,122 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: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.exercise_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.expiration_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionSeries A Convertible Preferred Stock · Derivative	16,666,667	$0.00	$0.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · derivative · entry 5 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P Disclosed balance after: 0 Underlying: Common Stock · 5,361,122 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: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.exercise_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F1 · derivative.expiration_date: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	PurchaseCommon Stock	400,000	$17.00	$6,800,000.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · nonDerivative · entry 4 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 6,128,297 F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F6 · ownership.nature: Reflects shares purchased by ARCH X Overage in the Issuer's initial public offering. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	PurchaseCommon Stock	400,000	$17.00	$6,800,000.00	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · nonDerivative · entry 3 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 6,128,297 F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F5 · ownership.nature: Reflects shares purchased by ARCH X in the Issuer's initial public offering. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionCommon Stock	5,728,297	Not disclosed	Not disclosed	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · nonDerivative · entry 2 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 5,728,297 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: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. F4 · ownership.nature: Represents shares held directly by ARCH Venture Fund X Overage, L.P. ("ARCH X Overage"). ARCH Venture Partners X Overage, L.P. ("AVP X Overage LP") is the sole general partner of ARCH X Overage. Read SEC document
October 24, 2022 Filed Oct 27, 2022 00:01 UTC	Prime Medicine, Inc. PRME · Entity 5281	ConversionCommon Stock	5,728,297	Not disclosed	Not disclosed	Disclosure SEC source: 0001628280-22-027125 · wf-form4_166682887797580.xml · nonDerivative · entry 1 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 5,728,297 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: The shares of Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (together, the "Preferred Stock") were convertible into Common Stock on a one-for-3.10880 basis at any time at the option of the holder, and automatically converted into the number of shares shown in Column 7 immediately prior to the closing of the Issuer's initial public offering on October 24, 2022. The Preferred Stock had no expiration date. F2 · ownership.nature: Represents shares held directly by ARCH Venture Fund X, L.P. ("ARCH X"). ARCH Venture Partners X, L.P. ("AVP X LP") is the sole general partner of ARCH X. F3 · ownership.nature: ARCH Venture Partners X, LLC ("AVP X LLC") is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow and Steven Gillis are members of the investment committee of AVP X LLC (the "AVP X Committee Members"). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by them for Section 16 or any other purpose. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries B-2 Preferred Stock · Derivative	1,133,333	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 8 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 944,444 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries B-1 Preferred Stock · Derivative	3,400,000	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 7 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 2,833,333 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries B-2 Preferred Stock · Derivative	1,133,333	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 6 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 0 Underlying: Common Stock · 944,444 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries B-1 Preferred Stock · Derivative	3,400,000	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 5 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 0 Underlying: Common Stock · 2,833,333 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries A Preferred Stock · Derivative	2,100,000	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 4 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 0 Underlying: Common Stock · 1,750,000 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionSeries A Preferred Stock · Derivative	2,100,000	Not disclosed Strike: $0.00	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · derivative · entry 3 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 0 Underlying: Common Stock · 1,750,000 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 · price: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.exercise_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F1 · derivative.expiration_date: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionCommon Stock	5,527,777	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · nonDerivative · entry 2 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X Overage, L.P. Disclosed balance after: 5,527,777 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: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. Read SEC document
July 20, 2021 Filed Jul 21, 2021 00:53 UTC	Erasca, Inc. ERAS · Entity 3796	ConversionCommon Stock	5,527,777	Not disclosed	Not disclosed	Disclosure SEC source: 0000899243-21-029077 · doc4.xml · nonDerivative · entry 1 ARCH Venture Partners X, LLC · CIK 0001769012 · 10% owner ARCH Venture Fund X, L.P. · CIK 0001757011 · 10% owner ARCH Venture Fund X Overage, L.P. · CIK 0001757017 · 10% owner ARCH Venture Partners X, L.P. · CIK 0001782583 · 10% owner ARCH Venture Partners X Overage, L.P. · CIK 0001768905 · 10% owner NELSEN ROBERT · CIK 0001219042 · 10% owner CRANDELL KEITH · CIK 0001219039 · 10% owner Burow Kristina · CIK 0001569248 · 10% owner GILLIS STEVEN · CIK 0001229592 · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: Not disclosed Ownership: Indirect · By ARCH Venture Fund X, L.P. Disclosed balance after: 5,527,777 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: The shares of the Issuer's Series A and Series B Preferred Stock automatically converted into shares of the Issuer's Common Stock, for no additional consideration, at a ratio of 1.2-for-1 share, immediately prior to the consummation of the Issuer's initial public offering. F2 · ownership.nature: ARCH Venture Partners X, L.P. (AVP X LP) is the sole general partner of ARCH Venture Fund X, L.P. (ARCH X). ARCH Venture Partners X Overage, L.P. (AVP X Overage LP) is the sole general partner of ARCH Venture Fund X Overage, L.P. (ARCH X Overage). ARCH Venture Partners X, LLC (AVP X LLC) is the sole general partner of each of AVP X LP and AVP X Overage LP. Keith Crandell, Kristina Burow, Steven Gillis, and Robert Nelsen comprise the investment committee of AVP X LLC (the AVP X Committee Members). AVP X LP and AVP X Overage LP may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, respectively, AVP X LLC may be deemed to beneficially own the shares held by ARCH X and ARCH X Overage, and each of the AVP X Committee Members may be deemed to share the power to direct the disposition and vote of the shares held by ARCH X and ARCH X Overage. F3 · ownership.nature: (Continued from Footnote 2) AVP X LP, AVP X Overage LP, AVP X LLC, and the AVP X Committee Members each disclaim beneficial ownership except to any pecuniary interest therein. 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.