TYRA

SEC source: 0001104659-21-116944 · tm2127913-1_4.xml · nonDerivative · entry 4

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner

RA Capital Nexus Fund, L.P. · CIK 0001780117 · Director · 10% owner

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 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: 442,721

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

F1 · price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F4 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, the Nexus Fund, and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

F5 · ownership.nature: These securities are held directly by the Account.

SEC source: 0001104659-21-116944 · tm2127913-1_4.xml · nonDerivative · entry 3

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner

RA Capital Nexus Fund, L.P. · CIK 0001780117 · Director · 10% owner

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 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: 1,496,613

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

F1 · price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.nature: These securities are held directly by RA Capital Nexus Fund, L.P. (the "Nexus Fund").

F4 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, the Nexus Fund, and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

SEC source: 0001104659-21-116944 · tm2127913-1_4.xml · nonDerivative · entry 2

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner

RA Capital Nexus Fund, L.P. · CIK 0001780117 · Director · 10% owner

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 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: 5,297,120

F2 · ownership.nature: These securities are held directly by RA Capital Healthcare Fund, L.P. (the "Fund").

F4 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, the Nexus Fund, and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

SEC source: 0001104659-21-116944 · tm2127913-1_4.xml · nonDerivative · entry 1

RA CAPITAL MANAGEMENT, L.P. · CIK 0001346824 · Director · 10% owner

RA Capital Healthcare Fund LP · CIK 0001315082 · Director · 10% owner

RA Capital Nexus Fund, L.P. · CIK 0001780117 · Director · 10% owner

Kolchinsky Peter · CIK 0001384859 · Director · 10% owner

Shah Rajeev M. · CIK 0001619841 · Director · 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: 4,047,120

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

F1 · price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: These securities are held directly by RA Capital Healthcare Fund, L.P. (the "Fund").

F4 · ownership.nature: RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund, the Nexus Fund, and a separately managed account (the "Account"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

SEC source: 0000899243-21-036606 · doc4.xml · derivative · entry 5

Canaan XI L.P. · CIK 0001712417 · 10% owner

Canaan Partners XI LLC · CIK 0001850694 · 10% owner

Canaan 2020+ Co-Investment L.P. Series 7 · CIK 0001882023 · 10% owner

Canaan Partners 2020+ Co-Investment LLC · CIK 0001881618 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 473,396 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.direct: The shares are held directly by Canaan 2020+ Co-Investment L.P. - Series 7 (the "Canaan Series 7"). The sole general partner of Canaan Series 7 is Canaan Partners 2020+ Co-Investment LLC ("Canaan 2020+ GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan Series 7. Canaan 2020+ GP disclaims Section 16 beneficial ownership of the securities held by Canaan Series 7, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036606 · doc4.xml · derivative · entry 4

Canaan XI L.P. · CIK 0001712417 · 10% owner

Canaan Partners XI LLC · CIK 0001850694 · 10% owner

Canaan 2020+ Co-Investment L.P. Series 7 · CIK 0001882023 · 10% owner

Canaan Partners 2020+ Co-Investment LLC · CIK 0001881618 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 473,394 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.direct: The shares are held directly by Canaan XI L.P. ("Canaan XI"). The sole general partner of Canaan XI is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036606 · doc4.xml · derivative · entry 3

Canaan XI L.P. · CIK 0001712417 · 10% owner

Canaan Partners XI LLC · CIK 0001850694 · 10% owner

Canaan 2020+ Co-Investment L.P. Series 7 · CIK 0001882023 · 10% owner

Canaan Partners 2020+ Co-Investment LLC · CIK 0001881618 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,463,201 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.direct: The shares are held directly by Canaan XI L.P. ("Canaan XI"). The sole general partner of Canaan XI is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036606 · doc4.xml · nonDerivative · entry 2

Canaan XI L.P. · CIK 0001712417 · 10% owner

Canaan Partners XI LLC · CIK 0001850694 · 10% owner

Canaan 2020+ Co-Investment L.P. Series 7 · CIK 0001882023 · 10% owner

Canaan Partners 2020+ Co-Investment LLC · CIK 0001881618 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 473,396

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

F1 · price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.direct: The shares are held directly by Canaan 2020+ Co-Investment L.P. - Series 7 (the "Canaan Series 7"). The sole general partner of Canaan Series 7 is Canaan Partners 2020+ Co-Investment LLC ("Canaan 2020+ GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan Series 7. Canaan 2020+ GP disclaims Section 16 beneficial ownership of the securities held by Canaan Series 7, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036606 · doc4.xml · nonDerivative · entry 1

Canaan XI L.P. · CIK 0001712417 · 10% owner

Canaan Partners XI LLC · CIK 0001850694 · 10% owner

Canaan 2020+ Co-Investment L.P. Series 7 · CIK 0001882023 · 10% owner

Canaan Partners 2020+ Co-Investment LLC · CIK 0001881618 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,936,595

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: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.direct: The shares are held directly by Canaan XI L.P. ("Canaan XI"). The sole general partner of Canaan XI is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036637 · doc4a.xml · derivative · entry 5

Kjellson Nina S · CIK 0001381980 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By 2020+ Co-Investment L.P. - Series 7

Disclosed balance after: 0

Underlying: Common Stock · 473,396 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.nature: The sole general partner of Canaan 2020+ Co-Investment L.P. - Series 7 (the "Canaan Series 7") is Canaan Partners 2020+ Co-Investment LLC ("Canaan 2020+ GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan Series 7. Canaan 2020+ GP disclaims Section 16 beneficial ownership of the securities held by Canaan Series 7, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036637 · doc4a.xml · derivative · entry 4

Kjellson Nina S · CIK 0001381980 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Canaan XI L.P.

Disclosed balance after: 0

Underlying: Common Stock · 473,394 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The sole general partner of Canaan XI L.P. ("Canaan XI") is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036637 · doc4a.xml · derivative · entry 3

Kjellson Nina S · CIK 0001381980 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Canaan XI L.P.

Disclosed balance after: 0

Underlying: Common Stock · 3,463,201 shares

Expires not disclosed

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

F1 · derivative.exercise_price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.exercise_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F1 · derivative.expiration_date: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The sole general partner of Canaan XI L.P. ("Canaan XI") is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036637 · doc4a.xml · nonDerivative · entry 2

Kjellson Nina S · CIK 0001381980 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By 2020+ Co-Investment L.P. - Series 7

Disclosed balance after: 473,396

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

F1 · price: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F3 · ownership.nature: The sole general partner of Canaan 2020+ Co-Investment L.P. - Series 7 (the "Canaan Series 7") is Canaan Partners 2020+ Co-Investment LLC ("Canaan 2020+ GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan Series 7. Canaan 2020+ GP disclaims Section 16 beneficial ownership of the securities held by Canaan Series 7, except to the extent of its pecuniary interest therein, if any.

SEC source: 0000899243-21-036637 · doc4a.xml · nonDerivative · entry 1

Kjellson Nina S · CIK 0001381980 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Canaan XI L.P.

Disclosed balance after: 3,936,595

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: On September 17, 2021, each share of Series A Preferred Stock and each share of Series B Preferred Stock converted into Common Stock of the Issuer at a ratio of 1-for-2.5974 without payment of further consideration upon closing of the initial public offering of the Issuer's common stock. The shares had no expiration date.

F2 · ownership.nature: The sole general partner of Canaan XI L.P. ("Canaan XI") is Canaan Partners XI LLC ("Canaan XI GP"), which may be deemed to have sole voting, investment and dispositive power with respect to the shares held by Canaan XI. Canaan XI GP disclaims Section 16 beneficial ownership of the securities held by Canaan XI, except to the extent of its pecuniary interest therein, if any.

SEC source: 0001567619-21-017389 · doc1.xml · derivative · entry 3

Cormorant Asset Management, LP · CIK 0001583977 · Former 10% Owner

Chen Bihua · CIK 0001599214 · Director · Former 10% Owner

Cormorant Global Healthcare Master Fund, LP · CIK 0001618442 · Former 10% Owner

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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: 0

Underlying: Common Stock · 757,432 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: Shares of Series B Convertible Preferred Stock were convertible at any time at the holder's election, without payment of additional consideration. Such shares had no expiration date but converted into Common Stock automatically upon the closing of the Issuer's initial public offering.

F1 · price: Shares of Series B Convertible Preferred Stock were convertible at any time at the holder's election, without payment of additional consideration. Such shares had no expiration date but converted into Common Stock automatically upon the closing of the Issuer's initial public offering.

F1 · derivative.exercise_date: Shares of Series B Convertible Preferred Stock were convertible at any time at the holder's election, without payment of additional consideration. Such shares had no expiration date but converted into Common Stock automatically upon the closing of the Issuer's initial public offering.

F1 · derivative.expiration_date: Shares of Series B Convertible Preferred Stock were convertible at any time at the holder's election, without payment of additional consideration. Such shares had no expiration date but converted into Common Stock automatically upon the closing of the Issuer's initial public offering.

F2 · ownership.nature: Shares reported herein are held by Cormorant Global Healthcare Master Fund, LP (the "Master Fund"), Cormorant Private Healthcare Fund III, LP ("Fund III"), and a managed account (the "Account"). Cormorant Asset Management, LP ("Cormorant") serves as the investment manager of the Master Fund, Fund III, and the Account. Bihua Chen serves as manager of the general partner of Cormorant. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein except to the extent of its or her pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any such shares for purposes of Section 16(a) of the Securities Exchange Act of 1934 or for any other purpose.

F5 · ownership.nature: The Series B Convertible Preferred Stock represented, on an as-converted basis, (i) 165,877 shares held by the Master Fund, (ii) 578,111 shares held by Fund III, and (iii) 13,444 shares held by the Account.

SEC source: 0001567619-21-017389 · doc1.xml · nonDerivative · entry 2

Cormorant Asset Management, LP · CIK 0001583977 · Former 10% Owner

Chen Bihua · CIK 0001599214 · Director · Former 10% Owner

Cormorant Global Healthcare Master Fund, LP · CIK 0001618442 · Former 10% Owner

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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: 1,069,932

F2 · ownership.nature: Shares reported herein are held by Cormorant Global Healthcare Master Fund, LP (the "Master Fund"), Cormorant Private Healthcare Fund III, LP ("Fund III"), and a managed account (the "Account"). Cormorant Asset Management, LP ("Cormorant") serves as the investment manager of the Master Fund, Fund III, and the Account. Bihua Chen serves as manager of the general partner of Cormorant. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein except to the extent of its or her pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any such shares for purposes of Section 16(a) of the Securities Exchange Act of 1934 or for any other purpose.

F4 · ownership.nature: Shares reported herein as purchased on September 17, 2021 represent 312,500 shares purchased by the Master Fund.

SEC source: 0001567619-21-017389 · doc1.xml · nonDerivative · entry 1

Cormorant Asset Management, LP · CIK 0001583977 · Former 10% Owner

Chen Bihua · CIK 0001599214 · Director · Former 10% Owner

Cormorant Global Healthcare Master Fund, LP · CIK 0001618442 · Former 10% Owner

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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: 757,432

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: Shares of Series B Convertible Preferred Stock were convertible at any time at the holder's election, without payment of additional consideration. Such shares had no expiration date but converted into Common Stock automatically upon the closing of the Issuer's initial public offering.

F2 · ownership.nature: Shares reported herein are held by Cormorant Global Healthcare Master Fund, LP (the "Master Fund"), Cormorant Private Healthcare Fund III, LP ("Fund III"), and a managed account (the "Account"). Cormorant Asset Management, LP ("Cormorant") serves as the investment manager of the Master Fund, Fund III, and the Account. Bihua Chen serves as manager of the general partner of Cormorant. Each of the Reporting Persons disclaims beneficial ownership of the shares reported herein except to the extent of its or her pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any such shares for purposes of Section 16(a) of the Securities Exchange Act of 1934 or for any other purpose.

F3 · ownership.nature: Represents (i) 165,877 shares held by the Master Fund, (ii) 578,111 shares held by Fund III, and (iii) 13,444 shares held by the Account.