IMRX

SEC source: 0001104659-21-099725 · tm2123807-2_4seq1.xml · nonDerivative · entry 2

Barrett Scott · CIK 0001869953 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,663

SEC source: 0001104659-21-099725 · tm2123807-2_4seq1.xml · nonDerivative · entry 1

Barrett Scott · CIK 0001869953 · Chief Medical Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,996

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 · shares: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 12

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 30,646 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F4 · ownership.nature: Mr. Feinberg is a General Partner of S4K Investments LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 11

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 30,646 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F3 · ownership.nature: Mr. Feinberg is a General Partner of PEF LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 10

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 30,646 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F2 · ownership.nature: Mr. Feinberg is a General Partner of PF Associates L.P.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 9

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 51,462 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F4 · ownership.nature: Mr. Feinberg is a General Partner of S4K Investments LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 8

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 92,509 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F3 · ownership.nature: Mr. Feinberg is a General Partner of PEF LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · derivative · entry 7

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 0

Underlying: Class A Common Stock · 102,926 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F2 · ownership.nature: Mr. Feinberg is a General Partner of PF Associates L.P.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 6

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 115,441

F4 · ownership.nature: Mr. Feinberg is a General Partner of S4K Investments LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 5

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 82,108

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 · shares: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F4 · ownership.nature: Mr. Feinberg is a General Partner of S4K Investments LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 4

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 476,568

F3 · ownership.nature: Mr. Feinberg is a General Partner of PEF LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 3

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 347,401

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 · shares: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F3 · ownership.nature: Mr. Feinberg is a General Partner of PEF LLC.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 2

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 386,492

F2 · ownership.nature: Mr. Feinberg is a General Partner of PF Associates L.P.

SEC source: 0001104659-21-099742 · tm2123807-9_4seq1.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · See Foonote

Disclosed balance after: 257,325

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 · shares: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F2 · ownership.nature: Mr. Feinberg is a General Partner of PF Associates L.P.

SEC source: 0001104659-21-099736 · tm2123807-7_4seq1.xml · nonDerivative · entry 1

KEATING LAURIE · CIK 0001620743 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,000

SEC source: 0001104659-21-099726 · tm2123807-3_4seq1.xml · nonDerivative · entry 1

BERMAN ANN E · CIK 0001349408 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,500

SEC source: 0001104659-21-099733 · tm2123807-6_4seq1.xml · derivative · entry 4

Hall Brett Matthew · CIK 0001870437 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 3,404 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

SEC source: 0001104659-21-099733 · tm2123807-6_4seq1.xml · derivative · entry 3

Hall Brett Matthew · CIK 0001870437 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 1,636 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: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.exercise_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · derivative.expiration_date: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

SEC source: 0001104659-21-099733 · tm2123807-6_4seq1.xml · nonDerivative · entry 2

Hall Brett Matthew · CIK 0001870437 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,393

SEC source: 0001104659-21-099733 · tm2123807-6_4seq1.xml · nonDerivative · entry 1

Hall Brett Matthew · CIK 0001870437 · Chief Scientific Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,040

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 · shares: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

F1 · price: Immediately prior to the closing of the Issuer's initial public offering, each share of preferred stock automatically converted into shares of the Issuer's Class A common stock on a one-for-one basis.

SEC source: 0001104659-21-099728 · tm2123807-4_4seq1.xml · nonDerivative · entry 1

Bookman Michael · CIK 0001840339 · General Counsel and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,402

SEC source: 0001567619-21-014499 · doc1.xml · derivative · entry 3

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

Chen Bihua · CIK 0001599214 · 10% owner

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

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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 · 1,702,628 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) 387,688 shares of Common Stock held by the Master Fund, (ii) 1,298,493 shares of Common Stock held by Fund III, and (iii) 16,447 shares held by the Account.

SEC source: 0001567619-21-014499 · doc1.xml · nonDerivative · entry 2

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

Chen Bihua · CIK 0001599214 · 10% owner

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

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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: 2,252,628

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 August 3, 2021 represent 550,000 shares purchased by the Master Fund.

SEC source: 0001567619-21-014499 · doc1.xml · nonDerivative · entry 1

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

Chen Bihua · CIK 0001599214 · 10% owner

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

Cormorant Private Healthcare Fund III LP · CIK 0001817320 · 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: 1,702,628

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) 387,688 shares of Common Stock held by the Master Fund, (ii) 1,298,493 shares of Common Stock held by Fund III, and (iii) 16,447 shares held by the Account.

SEC source: 0001104659-21-098274 · tm2123556d10_4seq1.xml · derivative · entry 1

BERMAN ANN E · CIK 0001349408 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,371

Underlying: Class A Common Stock · 28,371 shares

Expires 2031-07-28

F1 · derivative.exercise_date: The option vests and becomes exercisable as to 25% of the underlying shares on July 29, 2022 and then in equal monthly installments over the subsequent three years, subject to Ms. Berman's continued service as a non-employee member of the Issuer's board of directors through each applicable vesting date.

SEC source: 0001104659-21-098276 · tm2123556-11_4seq1.xml · derivative · entry 1

Bookman Michael · CIK 0001840339 · General Counsel and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 101,116

Underlying: Class A Common Stock · 101,116 shares

Expires 2031-07-28

F1 · derivative.exercise_date: The option vests and becomes exercisable as to 25% of the underlying shares on July 15, 2022 and then in equal monthly installments over the subsequent three years, subject to Mr. Bookman's continued employment through each applicable vesting date.