MCGUIRE TERRANCE

SEC source: 0000899243-22-023969 · doc4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,000

Underlying: Common Stock · 75,000 shares

Expires 2032-06-21

F1 · derivative.exercise_date: This option was granted on June 22, 2022 and vests in full on the earlier of (i) June 22, 2023 or (ii) the date of the Issuer's 2023 Annual Meeting of Stockholders, subject to continued service through the vesting date.

SEC source: 0001209191-22-038544 · doc4.xml · derivative · entry 4

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,918

Underlying: Common Stock · 18,918 shares

Expires 2032-06-16

F4 · derivative.exercise_date: The shares subject to the option vest in 12 equal monthly installments beginning on July 16, 2022, or if earlier, the date of the Issuer's next annual meeting of stockholders.

SEC source: 0001209191-22-038544 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,888

F1 · shares: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 16, 2023 or (ii) the date of the Issuer's next annual meeting of stockholders.

SEC source: 0001209191-22-038119 · doc4.xml · derivative · entry 4

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,640

Underlying: Class A Common Stock · 29,640 shares

Expires 2031-06-15

F4 · derivative.exercise_date: Shares subject to the option vest on the earlier of (i) June 15, 2023 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

SEC source: 0001209191-22-038119 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,945

F1 · shares: The reported shares are represented by restricted stock units, or RSUs, which vest on the earlier of (i) June 15, 2023 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

SEC source: 0001140361-22-023335 · form4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires 2032-06-14

F1 · derivative.exercise_date: The options, granted pursuant to the director compensation plan, will vest in full on the first anniversary of the grant date.

SEC source: 0000899243-21-049595 · doc4.xml · nonDerivative · entry 5

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 13,133

F10 · kind: Represents a change in the form of ownership of McGuire Family 2008 GST Non-Exempt Irrevocable Trust ("McGuire Family Trust") by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by PVM.

F11 · ownership.nature: Shares held by McGuire Family Trust. The Reporting Person, a member of the Issuer's board of directors, is the donor of McGuire Family Trust and may be deemed to have shared power to vote and dispose of the shares held by McGuire Family Trust.

SEC source: 0000899243-21-049595 · doc4.xml · nonDerivative · entry 4

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

F9 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by PVM to its members.

F7 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including the Reporting Person who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F8 · shares: (Continued from footnote 7) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F7 · ownership.nature: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including the Reporting Person who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F8 · ownership.nature: (Continued from footnote 7) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

SEC source: 0000899243-21-049595 · doc4.xml · nonDerivative · entry 3

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 98,533

F6 · kind: Represents a change in the form of ownership of PVM by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by the Polaris Funds.

F7 · shares: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including the Reporting Person who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F8 · shares: (Continued from footnote 7) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F7 · ownership.nature: Shares held by PVM. 276 shares received from PVPFF VI, 78,869 shares received from PVP VI AIV and 19,388 shares received from PVP VI AIV-B. The Managing Members, including the Reporting Person who is a member of the Issuer's board of directors, are managing members of PVM and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F8 · ownership.nature: (Continued from footnote 7) Each of the Managing Members disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

SEC source: 0000899243-21-049595 · doc4.xml · nonDerivative · entry 2

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,429

F5 · kind: Represents a change in the form of ownership of the Reporting Person by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by PVPFF.

SEC source: 0000899243-21-049595 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 12,353,817

F1 · kind: Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Polaris Venture Partners Founders' Fund VI, L.P. ("PVPFF VI"), Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and Polaris Venture Partners VI (AIV-B), L.P. (f/k/a PVP VI (AIV) Feeder Corp. Holding Partnership, L.P., "PVP VI AIV-B" and, together with PVPFF VI, PVP VI AIV and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds").

F2 · shares: 27,606 shares were distributed by PVPFF VI, 379,180 shares were distributed by PVP VI AIV and 93,214 shares were distributed by PVP VI AIV-B. The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and the Reporting Person, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F3 · shares: (Continued from footnote 2) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F4 · ownership.nature: 682,069 shares are held by PVPFF VI, 8,968,544 shares are held by PVP VI AIV, 2,204,736 shares are held by PVP VI AIV-B and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 28

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 320,160 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F7 · ownership.nature: These shares are held of record by Polaris Healthcare Technology Opportunities Fund, L.P. ("PHCT"). The general partner of PHCT is Polaris Healthcare Technology Opportunities Fund GP, L.L.C. ("PHCT GP") and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person holds an interest in PHCT GP and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 27

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 160,080 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F6 · ownership.nature: These shares are held of record by Polaris Partners IX, L.P. ("PP IX"). The general partner of PP IX is Polaris Partners GP IX, L.L.C. ("PP GP IX") and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person holds an interest in PP GP IX and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 26

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 6,175 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F5 · ownership.nature: These shares are held of record by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). The general partner of PVPSFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPSFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 25

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 4,230 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F4 · ownership.nature: These shares are held of record by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). The general partner of PVPFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 24

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 12,045 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F3 · ownership.nature: These shares are held of record by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPEF V"). The general partner of PVPEF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPEF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPEF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 23

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 617,870 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F2 · ownership.nature: These shares are held of record by Polaris Venture Partners V, L.P. ("PVP V"). The general partner of PVP V is Polaris Venture Management Co. V, L.L.C. ("PVM V") and may be deemed to have shared voting and investment power with respect to the shares held by PVP V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVP V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 22

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 220,380 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F6 · ownership.nature: These shares are held of record by Polaris Partners IX, L.P. ("PP IX"). The general partner of PP IX is Polaris Partners GP IX, L.L.C. ("PP GP IX") and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person holds an interest in PP GP IX and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 21

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 4,250 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F5 · ownership.nature: These shares are held of record by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). The general partner of PVPSFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPSFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 20

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 2,915 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F4 · ownership.nature: These shares are held of record by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). The general partner of PVPFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 19

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 8,290 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F3 · ownership.nature: These shares are held of record by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPEF V"). The general partner of PVPEF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPEF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPEF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 18

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 425,305 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F2 · ownership.nature: These shares are held of record by Polaris Venture Partners V, L.P. ("PVP V"). The general partner of PVP V is Polaris Venture Management Co. V, L.L.C. ("PVM V") and may be deemed to have shared voting and investment power with respect to the shares held by PVP V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVP V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 17

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 4,375,000 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F6 · ownership.nature: These shares are held of record by Polaris Partners IX, L.P. ("PP IX"). The general partner of PP IX is Polaris Partners GP IX, L.L.C. ("PP GP IX") and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person holds an interest in PP GP IX and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 16

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 18,095 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F5 · ownership.nature: These shares are held of record by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). The general partner of PVPSFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPSFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 15

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 12,395 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F4 · ownership.nature: These shares are held of record by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). The general partner of PVPFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 14

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 35,260 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F3 · ownership.nature: These shares are held of record by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPEF V"). The general partner of PVPEF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPEF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPEF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · derivative · entry 13

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 0

Underlying: Common Stock · 1,809,250 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F2 · ownership.nature: These shares are held of record by Polaris Venture Partners V, L.P. ("PVP V"). The general partner of PVP V is Polaris Venture Management Co. V, L.L.C. ("PVM V") and may be deemed to have shared voting and investment power with respect to the shares held by PVP V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVP V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 12

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 497,660

F7 · ownership.nature: These shares are held of record by Polaris Healthcare Technology Opportunities Fund, L.P. ("PHCT"). The general partner of PHCT is Polaris Healthcare Technology Opportunities Fund GP, L.L.C. ("PHCT GP") and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person holds an interest in PHCT GP and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 11

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 320,160

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F7 · ownership.nature: These shares are held of record by Polaris Healthcare Technology Opportunities Fund, L.P. ("PHCT"). The general partner of PHCT is Polaris Healthcare Technology Opportunities Fund GP, L.L.C. ("PHCT GP") and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person holds an interest in PHCT GP and may be deemed to have shared voting and investment power with respect to the shares held by PHCT. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 10

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,800,460

F6 · ownership.nature: These shares are held of record by Polaris Partners IX, L.P. ("PP IX"). The general partner of PP IX is Polaris Partners GP IX, L.L.C. ("PP GP IX") and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person holds an interest in PP GP IX and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 9

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 4,755,460

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F6 · ownership.nature: These shares are held of record by Polaris Partners IX, L.P. ("PP IX"). The general partner of PP IX is Polaris Partners GP IX, L.L.C. ("PP GP IX") and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person holds an interest in PP GP IX and may be deemed to have shared voting and investment power with respect to the shares held by PP IX. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 8

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 31,198

F5 · ownership.nature: These shares are held of record by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). The general partner of PVPSFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPSFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 7

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 28,520

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F5 · ownership.nature: These shares are held of record by Polaris Venture Partners Special Founders' Fund V, L.P. ("PVPSFF V"). The general partner of PVPSFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPSFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPSFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 6

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 21,374

F4 · ownership.nature: These shares are held of record by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). The general partner of PVPFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 5

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 19,540

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F4 · ownership.nature: These shares are held of record by Polaris Venture Partners Founders' Fund V, L.P. ("PVPFF V"). The general partner of PVPFF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPFF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPFF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 4

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 60,814

F3 · ownership.nature: These shares are held of record by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPEF V"). The general partner of PVPEF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPEF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPEF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 3

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 55,595

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F3 · ownership.nature: These shares are held of record by Polaris Venture Partners Entrepreneurs' Fund V, L.P. ("PVPEF V"). The general partner of PVPEF V is PVM V and may be deemed to have shared voting and investment power with respect to the shares held by PVPEF V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVPEF V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 2

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 3,120,194

F2 · ownership.nature: These shares are held of record by Polaris Venture Partners V, L.P. ("PVP V"). The general partner of PVP V is Polaris Venture Management Co. V, L.L.C. ("PVM V") and may be deemed to have shared voting and investment power with respect to the shares held by PVP V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVP V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-051297 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 2,852,425

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

F1 · price: Each share of Series A Preferred Stock, Series B Preferred Stock, and Series C Preferred Stock automatically converted, without payment of additional consideration, into Common Stock on a 5:1 basis immediately prior to the closing of the Issuer's initial public offering of its Common Stock and had no expiration date.

F2 · ownership.nature: These shares are held of record by Polaris Venture Partners V, L.P. ("PVP V"). The general partner of PVP V is Polaris Venture Management Co. V, L.L.C. ("PVM V") and may be deemed to have shared voting and investment power with respect to the shares held by PVP V. The Reporting Person is a Managing Member of PVM V and may be deemed to have shared voting and dispositive power over the shares held by PVP V. The Reporting Person disclaims beneficial ownership of the securities reported herein, except to the extent of the Reporting Person's pecuniary interest therein. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 of the Securities Exchange Act of 1934 or otherwise, the Reporting Person is the beneficial owner of any securities reported herein.

SEC source: 0001209191-21-050491 · doc4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,593

Underlying: Common Stock · 35,593 shares

Expires 2031-08-04

F1 · derivative.exercise_date: One third (1/3) of the option shall vest on August 5, 2022, and thereafter, the remainder of the option shall vest in 24 equal monthly installments on the 5th day of each month, subject to the Reporting Person's continuous service on each vesting date.

SEC source: 0001140361-21-022544 · form4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

Underlying: Common Stock · 10,000 shares

Expires 2031-06-24

F1 · derivative.exercise_date: The options, granted pursuant to the director compensation plan, will vest in full on the first anniversary of the grant date.

SEC source: 0001209191-21-042512 · doc4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Class A Common Stock · 15,000 shares

Expires 2031-06-17

F1 · derivative.exercise_date: Shares subject to the option vest on the earlier of (i) June 17, 2022 or (ii) the day prior to the date of the Issuer's next annual meeting of stockholders.

SEC source: 0001209191-21-042422 · doc4.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,709

Underlying: Common Stock · 25,709 shares

Expires 2031-06-17

F1 · derivative.exercise_date: The shares subject to the option vest in 12 equal monthly installments beginning on July 17, 2021 and vest in full on the earlier of the date of the Issuer's next annual meeting of stockholders or June 17, 2022.

SEC source: 0000899243-21-022327 · doc4.xml · nonDerivative · entry 2

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Polaris Entrepreneurs' Fund VIII, L.P.

Disclosed balance after: 24,957

F1 · shares: On June 3, 2021, Polaris Partners VIII, L.P. ("PP VIII") and Polaris Entrepreneurs' Fund VIII, L.P. ("PEF VIII") agreed to purchase directly from the Issuer such shares of Common Stock of the Issuer in a private placement transaction.

F3 · ownership.nature: The reportable securities are owned directly by PEF VIII. PPGP VIII is the general partner of PEF VIII. The Reporting Person, a member of the Issuer's Board of Directors, is an interest holder of PPGP VIII. Each of the Reporting Person and the Managing Members, in their respective capacities with respect to PPGP VIII, may be deemed to have shared voting and dispositive power over the shares held by PEF VIII. Each of PPGP VIII, the Reporting Person and the Managing Members disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0000899243-21-022327 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Polaris Partners VIII, L.P.

Disclosed balance after: 697,313

F1 · shares: On June 3, 2021, Polaris Partners VIII, L.P. ("PP VIII") and Polaris Entrepreneurs' Fund VIII, L.P. ("PEF VIII") agreed to purchase directly from the Issuer such shares of Common Stock of the Issuer in a private placement transaction.

F2 · ownership.nature: The reportable securities are owned directly by PP VIII. Polaris Partners GP VIII, L.L.C. ("PPGP VIII") is the general partner of PP VIII. The Reporting Person, a member of the Issuer's Board of Directors, is an interest holder of PPGP VIII. Each of David Barrett, Brian Chee, Amir Nashat and Bryce Youngren are the managing members of PPGP VIII (collectively, the "Managing Members"). Each of the Reporting Person and the Managing Members, in their respective capacities with respect to PPGP VIII, may be deemed to have shared voting and dispositive power over the shares held by PP VIII. Each of PPGP VIII, the Reporting Person and the Managing Members disclaims beneficial ownership of these securities and this report shall not be deemed an admission that any one of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0001628280-20-017318 · wf-form4_160756341971329.xml · derivative · entry 3

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 51,457 shares

Expires not disclosed

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

F1 · derivative.exercise_price: Each share of Series A Convertible Preferred Stock automatically converted into Class A Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock for no additional consideration and had no expiration date.

F1 · price: Each share of Series A Convertible Preferred Stock automatically converted into Class A Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock for no additional consideration and had no expiration date.

F1 · derivative.exercise_date: Each share of Series A Convertible Preferred Stock automatically converted into Class A Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock for no additional consideration and had no expiration date.

F1 · derivative.expiration_date: Each share of Series A Convertible Preferred Stock automatically converted into Class A Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock for no additional consideration and had no expiration date.

F2 · ownership.nature: The reported securities are held of record by Strong Bridge, LLC for which the Reporting Person serves as an operating manager.

SEC source: 0001628280-20-017318 · wf-form4_160756341971329.xml · nonDerivative · entry 2

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 78,947

F3 · ownership.nature: The reported securities are held of record by Polaris Founders Capital Fund I, L.P. ("PFCF I"). Polaris Founders Capital Management Co. I, L.L.C. ("PFCM"), is the general partner of PFCF I. The Reporting Person and Jonathan A. Flint ("Flint") are the managing members of PFCM. Each of the Reporting Person and Flint in their respective capacities with respect to PFCM may be deemed to have shared voting and dispositive power with respect to the shares held by PFCF I. Each of PFCM, Flint, and the Reporting Person disclaims beneficial ownership of securities held by PFCF I, and this report shall not be deemed an admission that the Reporting Person, Flint, or PFCM is the beneficial owner of these securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interests therein.

SEC source: 0001628280-20-017318 · wf-form4_160756341971329.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 210,982

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

F1 · price: Each share of Series A Convertible Preferred Stock automatically converted into Class A Common Stock on a one-to-one basis immediately prior to the completion of the Issuer's initial public offering of Class A Common Stock for no additional consideration and had no expiration date.

F2 · ownership.nature: The reported securities are held of record by Strong Bridge, LLC for which the Reporting Person serves as an operating manager.

SEC source: 0001628280-20-017431 · wf-form4_160773909064726.xml · derivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,691

Underlying: Class A Common Stock · 18,691 shares

Expires 2020-12-03

F1 · derivative.exercise_date: Shares subject to the option vest in 36 equal monthly installments beginning on January 3, 2021.

SEC source: 0000899243-20-017687 · doc4.xml · nonDerivative · entry 1

MCGUIRE TERRANCE · CIK 0001117003 · Director · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 12,853,817

F1 · shares: 242 shares were sold by Polaris Venture Partners Founders' Fund VI, L.P ("PVPFF VI"), 3,153 shares were sold by Polaris Venture Partners VI (AIV), L.P. ("PVP VI AIV") and 982 shares were sold by PVP VI (AIV) Feeder Corp. Holding Partnership, L.P. ("PVP VI Feeder" and, together with PVP VI AIV, PVPFF VI, and Polaris Venture Partners VI, L.P. ("PVP VI"), the "Polaris Funds"). The general partner of each of the Polaris Funds is Polaris Venture Management Co. VI, L.L.C. ("PVM"). Each of Amir Nashat, Brian Chee, David Barrett, Bryce Youngren, Jonathan Flint, and the Reporting Person, a member of the Issuer's board of directors, are managing members of PVM (collectively, the "Managing Members") and may be deemed to have shared power to vote and dispose of the shares held by the Polaris Funds.

F2 · shares: (continued from footnote 1) Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.50 to $31.61, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (3) to this Form 4.

F4 · ownership.nature: 709,675 shares are held by PVPFF VI, 9,347,724 shares are held by PVP VI AIV, 2,297,950 shares are held by PVP VI Feeder and 498,468 shares are held by PVP VI. Each of the Managing Members and PVM disclaims beneficial ownership of the securities held by the Polaris Funds, and this report shall not be deemed an admission that any of them is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of their respective pecuniary interest therein.