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ARCH Venture Partners VII, L.P.

Disclosed activity across 6 companies

Tapewire entity
73812
SEC CIK
0001544444

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
908 Devices Inc.MASS · Entity 556410% ownerDecember 22, 2020December 23, 2020
Neumora Therapeutics, Inc.NMRA · Entity 611510% ownerOctober 27, 2025October 29, 2025
Twist Bioscience CorpTWST · Entity 361910% ownerNovember 02, 2018November 06, 2018
Unity Biotechnology, Inc.UBX · Entity 7742810% ownerMay 07, 2018May 07, 2018

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.

908 Devices Inc.

Report date December 22, 2020 · Filed December 23, 2020

Jointly reported with ARCH Venture Fund VII, L.P., ARCH Venture Partners VII, LLC, BYBEE CLINTON, NELSEN ROBERT

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common Stock, par value $0.001SEC Table I · non-derivativeDirect5,725,045 Last balance in matching sequence After 2020-12-22 transaction · row 2 Source-order balances reconcile. Account continuity and personal attribution are not independently verified.
2 source rows

Row 1 · 2020-12-22 · Conversion · Acquired 5,425,045 · Balance 5,425,045

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Row 2 · 2020-12-22 · Purchase · Acquired 300,000 · Balance 5,725,045

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

Series A Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2020-12-22 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2020-12-22 · Conversion · Disposed 2,927,386 · Balance 0

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Series B Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2020-12-22 transaction · row 4 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 4 · 2020-12-22 · Conversion · Disposed 981,443 · Balance 0

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Series C Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2020-12-22 transaction · row 5 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 5 · 2020-12-22 · Conversion · Disposed 669,977 · Balance 0

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Series D Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2020-12-22 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2020-12-22 · Conversion · Disposed 665,661 · Balance 0

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Series E Preferred StockSEC Table II · derivative / convertible securityDirect0 Reported balance After 2020-12-22 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2020-12-22 · Conversion · Disposed 180,578 · Balance 0

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

Filing footnotes · ownership attribution and instrument terms

F1: Each share of Series A Preferred Stock, Series B Preferred Stock, Series C Preferred Stock, Series D Preferred Stock and Series E Preferred Stock (collectively, the "Preferred Shares") converted into 0.61459 shares of the Issuer's Common Stock automatically upon the closing of the Issuer's initial public offering without payment of additional consideration. The Preferred Shares were convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering, and had no expiration date.

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

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-derivativeIndirectSee footnote1,182,645 Reported balance After 2018-11-02 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2018-11-02 · Conversion · Acquired 1,182,645 · Balance 1,182,645

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote1,900,920 Reported balance After 2018-11-02 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2018-11-02 · Conversion · Acquired 718,275 · Balance 1,900,920

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote2,167,696 Reported balance After 2018-11-02 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2018-11-02 · Conversion · Acquired 266,776 · Balance 2,167,696

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote2,392,422 Reported balance After 2018-11-02 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2018-11-02 · Conversion · Acquired 224,726 · Balance 2,392,422

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote2,407,422 Reported balance After 2018-11-02 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2018-11-02 · Purchase · Acquired 15,000 · Balance 2,407,422

F4: Reflects shares purchased in the Issuer's initial public offering.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote894,146 Reported balance After 2018-11-02 transaction · row 6 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 6 · 2018-11-02 · Conversion · Acquired 894,146 · Balance 894,146

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F5: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). The sole general partner of ARCH Overage is ARCH Venture Partners VIII, LLC ("AVP GPLLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee footnote954,146 Reported balance After 2018-11-02 transaction · row 7 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 7 · 2018-11-02 · Purchase · Acquired 60,000 · Balance 954,146

F4: Reflects shares purchased in the Issuer's initial public offering.

F5: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). The sole general partner of ARCH Overage is ARCH Venture Partners VIII, LLC ("AVP GPLLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series A Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-11-02 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2018-11-02 · Conversion · Disposed 1,182,645 · Balance 0

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F6: The expiration date is not relevant to the conversion of these securities.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-11-02 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2018-11-02 · Conversion · Disposed 718,275 · Balance 0

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F6: The expiration date is not relevant to the conversion of these securities.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series C Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-11-02 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2018-11-02 · Conversion · Disposed 266,776 · Balance 0

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F6: The expiration date is not relevant to the conversion of these securities.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series D Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-11-02 transaction · row 11 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 11 · 2018-11-02 · Conversion · Disposed 224,726 · Balance 0

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F6: The expiration date is not relevant to the conversion of these securities.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series D Preferred StockSEC Table II · derivative / convertible securityIndirectSee footnote0 Reported balance After 2018-11-02 transaction · row 12 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 12 · 2018-11-02 · Conversion · Disposed 894,146 · Balance 0

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F6: The expiration date is not relevant to the conversion of these securities.

F5: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). The sole general partner of ARCH Overage is ARCH Venture Partners VIII, LLC ("AVP GPLLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: Upon closing of the Issuer's initial public offering, each share of preferred stock was automatically converted into one share of the Issuer's common stock, for no additional consideration, on a 1:1 basis.

F2: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH Fund VII"). The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3: Clinton Bybee and Robert Nelsen are the managing directors of ARCH VII LLC and ARCH VIII LLC, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F4: Reflects shares purchased in the Issuer's initial public offering.

F5: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). The sole general partner of ARCH Overage is ARCH Venture Partners VIII, LLC ("AVP GPLLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F6: The expiration date is not relevant to the conversion of these securities.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeIndirectSee Footnote2,070,172 Reported balance After 2018-05-07 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2018-05-07 · Conversion · Acquired 2,030,625 · Balance 2,070,172

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

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote6,298,604 Reported balance After 2018-05-07 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2018-05-07 · Conversion · Acquired 4,228,432 · Balance 6,298,604

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

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote8,365,764 Reported balance After 2018-05-07 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2018-05-07 · Conversion · Acquired 2,067,160 · Balance 8,365,764

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

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote1,486,745 Reported balance After 2018-05-07 transaction · row 4 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 4 · 2018-05-07 · Conversion · Acquired 1,486,745 · Balance 1,486,745

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

F4: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). ARCH Venture Partners VIII, LLC (the "AVP GPLLC"), as the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Common StockSEC Table I · non-derivativeIndirectSee Footnote1,682,417 Reported balance After 2018-05-07 transaction · row 5 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 5 · 2018-05-07 · Conversion · Acquired 195,672 · Balance 1,682,417

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

F4: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). ARCH Venture Partners VIII, LLC (the "AVP GPLLC"), as the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series A-1 Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2018-05-07 transaction · row 6 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 6 · 2018-05-07 · Conversion · Disposed 2,030,625 · Balance 0

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

F2: The expiration date is not relevant to the conversion of these securities.

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series A-2 Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2018-05-07 transaction · row 7 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 7 · 2018-05-07 · Conversion · Disposed 4,228,432 · Balance 0

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

F2: The expiration date is not relevant to the conversion of these securities.

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2018-05-07 transaction · row 8 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 8 · 2018-05-07 · Conversion · Disposed 2,067,160 · Balance 0

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

F2: The expiration date is not relevant to the conversion of these securities.

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series B Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2018-05-07 transaction · row 9 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 9 · 2018-05-07 · Conversion · Disposed 1,486,745 · Balance 0

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

F2: The expiration date is not relevant to the conversion of these securities.

F4: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). ARCH Venture Partners VIII, LLC (the "AVP GPLLC"), as the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Series C Preferred StockSEC Table II · derivative / convertible securityIndirectSee Footnote0 Reported balance After 2018-05-07 transaction · row 10 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 10 · 2018-05-07 · Conversion · Disposed 195,672 · Balance 0

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

F2: The expiration date is not relevant to the conversion of these securities.

F4: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). ARCH Venture Partners VIII, LLC (the "AVP GPLLC"), as the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

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

F2: The expiration date is not relevant to the conversion of these securities.

F3: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F4: The shares are directly held by ARCH Venture Fund VIII Overage, L.P. ("ARCH Overage"). ARCH Venture Partners VIII, LLC (the "AVP GPLLC"), as the sole general partner of ARCH Overage, may be deemed to beneficially own the shares held by ARCH Overage. AVP GPLLC disclaims beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee 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.

Section 16 reporting ended · disclosed 2018-04-12. Current position is not established by this disclosure.

No balance rows disclosed in this filing.

Syros Pharmaceuticals, Inc.

Report date July 15, 2019 · Filed July 17, 2019

Jointly reported with ARCH Venture Fund VII, L.P., ARCH Venture Partners VII, LLC, CRANDELL KEITH, BYBEE CLINTON, NELSEN ROBERT

Section 16 reporting ended · disclosed 2019-07-17. Current position is not established by this disclosure.

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect4,302,051 Reported balance After 2019-07-15 transaction · row 1 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 1 · 2019-07-15 · Sale · Disposed 2,700 · Balance 4,302,051

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.20 to $8.40, inclusive. The reporting person undertakes to provide to Syros Pharmaceuticals, Inc., any security holder of' Syros Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (2) and (3) to this Form 4.

F4: Beneficial ownership consists of 4,242,051 shares of common stock held by ARCH Fund VII. The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by and ARCH Fund VII. 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-derivativeDirect4,276,572 Reported balance After 2019-07-16 transaction · row 2 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 2 · 2019-07-16 · Sale · Disposed 25,779 · Balance 4,276,572

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.75 to $7.825, inclusive.

F4: Beneficial ownership consists of 4,242,051 shares of common stock held by ARCH Fund VII. The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by and ARCH Fund VII. 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-derivativeDirect4,242,051 Reported balance After 2019-07-17 transaction · row 3 Joint disclosure: continuity of the reported position is unresolved; see ownership footnotes.
1 source row

Row 3 · 2019-07-17 · Sale · Disposed 34,521 · Balance 4,242,051

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.5775 to $7.755, inclusive.

F4: Beneficial ownership consists of 4,242,051 shares of common stock held by ARCH Fund VII. The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by and ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.20 to $8.40, inclusive. The reporting person undertakes to provide to Syros Pharmaceuticals, Inc., any security holder of' Syros Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (2) and (3) to this Form 4.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.75 to $7.825, inclusive.

F3: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.5775 to $7.755, inclusive.

F4: Beneficial ownership consists of 4,242,051 shares of common stock held by ARCH Fund VII. The sole general partner of ARCH Fund VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to be the beneficial owner of the shares held by ARCH Fund VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen, and they may be deemed to beneficially own the shares held by and ARCH Fund VII. Messrs. Crandell, Bybee and Nelsen disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

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
May 07, 2018 Filed May 7, 2018 18:19 UTC Unity Biotechnology, Inc. UBX · Entity 77428 ConversionCommon Stock 2,067,160 Not disclosed Not disclosed
Disclosure

SEC source: 0001140361-18-022043 · doc1.xml · nonDerivative · entry 3

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

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 8,365,764

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

F3 · ownership.nature: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5 · ownership.nature: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

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May 07, 2018 Filed May 7, 2018 18:19 UTC Unity Biotechnology, Inc. UBX · Entity 77428 ConversionCommon Stock 4,228,432 Not disclosed Not disclosed
Disclosure

SEC source: 0001140361-18-022043 · doc1.xml · nonDerivative · entry 2

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

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 6,298,604

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

F3 · ownership.nature: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5 · ownership.nature: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

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May 07, 2018 Filed May 7, 2018 18:19 UTC Unity Biotechnology, Inc. UBX · Entity 77428 ConversionCommon Stock 2,030,625 Not disclosed Not disclosed
Disclosure

SEC source: 0001140361-18-022043 · doc1.xml · nonDerivative · entry 1

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

CRANDELL KEITH · CIK 0001219039 · 10% owner

BYBEE CLINTON · CIK 0001219043 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,070,172

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

F3 · ownership.nature: The shares are directly held by ARCH Venture Fund VII, L.P. ("ARCH VII"). ARCH Venture Partners VII, L.P. (the "GPLP"), as the sole general partner of ARCH VII, may be deemed to beneficially own certain of the shares held by ARCH VII. ARCH Venture Partners VII, LLC ("GPLLC"), as the sole general partner of GPLP, may be deemed to beneficially own the shares held by GPLP. GPLP and GPLLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F5 · ownership.nature: The managing directors of GPLLC and AVP GPLLC are Keith Crandell and Clinton Bybee, and they may be deemed to beneficially own the shares held by ARCH Fund VII and ARCH Overage. Messrs. Crandell and Bybee disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Read SEC document
April 03, 2018 Filed Apr 6, 2018 00:27 UTC Pulmatrix, Inc. PULM · Entity 8249 PurchaseSeries B Warrant (right to buy) · Derivative 1,150,000 Not disclosed Strike: $0.75 Not disclosed
Disclosure

SEC source: 0000899243-18-009614 · doc4.xml · derivative · entry 3

GILLIS STEVEN · CIK 0001229592 · Director

Arch Venture Fund VII LP · CIK 0001402439 · Former 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · Former 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · Former 10% owner

CRANDELL KEITH · CIK 0001219039 · Former 10% owner

BYBEE CLINTON · CIK 0001219043 · Former 10% owner

NELSEN ROBERT · CIK 0001219042 · Former 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: 1,150,000

Underlying: Common Stock · 1,150,000 shares

Expires 2023-04-03

F1 · price: The reported securities were included within 1,150,000 Units purchased by ARCH Venture Fund VII, L.P. ("ARCH VII") for $0.65 per Unit. Each Unit consisted of one share of common stock, one Series A Warrant to purchase one share of common stock at an exercise price of $0.65 per share, and one Series B Warrant to purchase one share of common stock at an exercise price of $0.75 per share.

F2 · ownership.nature: Securities held of record byARCH VII. The sole general partner of ARCH VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3 · ownership.nature: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen and they may be deemed to have shared voting and investment power over the shares held by ARCH VII. Dr. Steve Gillis owns an interest in ARCH Partners VII, but does not have dispositive or voting power. Messrs. Crandell, Bybee and Nelsen and Dr. Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

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April 03, 2018 Filed Apr 6, 2018 00:27 UTC Pulmatrix, Inc. PULM · Entity 8249 PurchaseSeries A Warrant (right to buy) · Derivative 1,150,000 Not disclosed Strike: $0.65 Not disclosed
Disclosure

SEC source: 0000899243-18-009614 · doc4.xml · derivative · entry 2

GILLIS STEVEN · CIK 0001229592 · Director

Arch Venture Fund VII LP · CIK 0001402439 · Former 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · Former 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · Former 10% owner

CRANDELL KEITH · CIK 0001219039 · Former 10% owner

BYBEE CLINTON · CIK 0001219043 · Former 10% owner

NELSEN ROBERT · CIK 0001219042 · Former 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: 1,150,000

Underlying: Common Stock · 1,150,000 shares

Expires 2018-10-03

F1 · price: The reported securities were included within 1,150,000 Units purchased by ARCH Venture Fund VII, L.P. ("ARCH VII") for $0.65 per Unit. Each Unit consisted of one share of common stock, one Series A Warrant to purchase one share of common stock at an exercise price of $0.65 per share, and one Series B Warrant to purchase one share of common stock at an exercise price of $0.75 per share.

F2 · ownership.nature: Securities held of record byARCH VII. The sole general partner of ARCH VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3 · ownership.nature: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen and they may be deemed to have shared voting and investment power over the shares held by ARCH VII. Dr. Steve Gillis owns an interest in ARCH Partners VII, but does not have dispositive or voting power. Messrs. Crandell, Bybee and Nelsen and Dr. Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

Read SEC document
April 03, 2018 Filed Apr 6, 2018 00:27 UTC Pulmatrix, Inc. PULM · Entity 8249 PurchaseCommon Stock 1,150,000 Not disclosed Not disclosed
Disclosure

SEC source: 0000899243-18-009614 · doc4.xml · nonDerivative · entry 1

GILLIS STEVEN · CIK 0001229592 · Director

Arch Venture Fund VII LP · CIK 0001402439 · Former 10% owner

ARCH Venture Partners VII, L.P. · CIK 0001544444 · Former 10% owner

ARCH Venture Partners VII, LLC · CIK 0001544443 · Former 10% owner

CRANDELL KEITH · CIK 0001219039 · Former 10% owner

BYBEE CLINTON · CIK 0001219043 · Former 10% owner

NELSEN ROBERT · CIK 0001219042 · Former 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: 3,436,456

F1 · price: The reported securities were included within 1,150,000 Units purchased by ARCH Venture Fund VII, L.P. ("ARCH VII") for $0.65 per Unit. Each Unit consisted of one share of common stock, one Series A Warrant to purchase one share of common stock at an exercise price of $0.65 per share, and one Series B Warrant to purchase one share of common stock at an exercise price of $0.75 per share.

F2 · ownership.nature: Securities held of record byARCH VII. The sole general partner of ARCH VII is ARCH Venture Partners VII, L.P. ("ARCH Partners VII"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. The sole general partner of ARCH Partners VII is ARCH Venture Partners VII, LLC ("ARCH VII LLC"), which may be deemed to have shared voting and investment power over the shares held by ARCH VII. ARCH Partners VII and ARCH VII LLC disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

F3 · ownership.nature: The managing directors of ARCH VII LLC are Keith Crandell, Clinton Bybee and Robert Nelsen and they may be deemed to have shared voting and investment power over the shares held by ARCH VII. Dr. Steve Gillis owns an interest in ARCH Partners VII, but does not have dispositive or voting power. Messrs. Crandell, Bybee and Nelsen and Dr. Gillis disclaim beneficial ownership of such shares, except to the extent of any pecuniary interest therein.

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