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ARCH Venture Partners X, L.P.

Disclosed activity across 6 companies

Tapewire entity
73810
SEC CIK
0001782583

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Maze Therapeutics, Inc.MAZE · Entity 177510% ownerJanuary 30, 2025January 30, 2025
Neumora Therapeutics, Inc.NMRA · Entity 611510% ownerOctober 27, 2025October 29, 2025
Prime Medicine, Inc.PRME · Entity 528110% ownerAugust 01, 2025August 01, 2025
Sana Biotechnology, Inc.SANA · Entity 487010% ownerFebruary 08, 2024February 12, 2024

Disclosed balances

About these balances

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Series A Preferred StockSEC Table II · derivative / convertible securityIndirectARCH 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 securityIndirectARCH 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 securityIndirectARCH 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 securityIndirectARCH 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 securityIndirectARCH 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 securityIndirectARCH 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.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy 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-derivativeIndirectBy 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-derivativeIndirectBy 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-derivativeIndirectBy 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-derivativeIndirectBy 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.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy 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-derivativeIndirectBy 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-derivativeIndirectBy 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.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote10,667,387 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-derivativeIndirectSee Footnote12,446,022 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-derivativeIndirectSee Footnote12,446,022 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-derivativeIndirectSee Footnote10,301,250 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.

Past disclosures · reporting ended (2)

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

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectBy 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-derivativeIndirectBy 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 $0.00IndirectBy 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 $0.00IndirectBy 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 $0.00IndirectBy 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 $0.00IndirectBy 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 $0.00IndirectBy 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 $0.00IndirectBy 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.

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

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.001SEC Table I · non-derivativeIndirectARCH 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-derivativeIndirectARCH 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 securityIndirectSee Footnotes0 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 securityIndirectSee Footnotes0 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 securityIndirectSee Footnotes0 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 securityIndirectSee Footnotes0 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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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

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

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
February 08, 2021 Filed Feb 10, 2021 19:20 UTC Sana Biotechnology, Inc. SANA · Entity 4870 ConversionSeries A-1 Convertible Preferred Stock · Derivative 3,687,500 $0.00 $0.00
Disclosure

SEC source: 0000899243-21-005752 · doc4.xml · derivative · entry 5

ARCH Venture Fund X, L.P. · CIK 0001757011 · 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 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, 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: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 0

Underlying: Common Stock · 3,687,500 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 Issuer's Preferred Stock automatically converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-1 basis immediately prior to the consummation of Issuer's initial public offering.

F1 · derivative.exercise_date: The shares of Issuer's Preferred Stock automatically converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-1 basis immediately prior to the consummation of Issuer's initial public offering.

F8 · derivative.expiration_date: The expiration date is not relevant to the conversion of these securities.

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 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
February 08, 2021 Filed Feb 10, 2021 19:20 UTC Sana Biotechnology, Inc. SANA · Entity 4870 ConversionCommon Stock 11,718,750 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-21-005752 · doc4.xml · nonDerivative · entry 4

ARCH Venture Fund X, L.P. · CIK 0001757011 · 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 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, 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: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,718,750

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

F6 · 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.

F7 · 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, 2021 Filed Feb 10, 2021 19:20 UTC Sana Biotechnology, Inc. SANA · Entity 4870 ConversionCommon Stock 11,718,750 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-21-005752 · doc4.xml · nonDerivative · entry 3

ARCH Venture Fund X, L.P. · CIK 0001757011 · 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 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, 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: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 11,718,750

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

F5 · 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.

F7 · 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, 2021 Filed Feb 10, 2021 19:20 UTC Sana Biotechnology, Inc. SANA · Entity 4870 ConversionCommon Stock 10,156,250 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-21-005752 · doc4.xml · nonDerivative · entry 2

ARCH Venture Fund X, L.P. · CIK 0001757011 · 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 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, 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: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,301,250

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 Issuer's Preferred Stock automatically converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-1 basis immediately prior to the consummation of 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 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
February 08, 2021 Filed Feb 10, 2021 19:20 UTC Sana Biotechnology, Inc. SANA · Entity 4870 ConversionCommon Stock 10,156,250 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-21-005752 · doc4.xml · nonDerivative · entry 1

ARCH Venture Fund X, L.P. · CIK 0001757011 · 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 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, 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: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 10,303,750

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 Issuer's Preferred Stock automatically converted into shares of Issuer's Common Stock, for no additional consideration, on a 1-for-1 basis immediately prior to the consummation of 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 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

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