Feinberg Peter

SEC source: 0001790340-26-000064 · wk-form4_1781213003.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,350

Underlying: Class A Common Stock · 33,350 shares

Expires 2036-06-11

F1 · derivative.exercise_date: The option vests and becomes exercisable in equal monthly installments over a one-year period commencing on July 11, 2026, and will be fully vested and exercisable on June 11, 2027, or the date of the 2027 annual meeting of stockholders, whichever comes first.

SEC source: 0001790340-26-000008 · wk-form4_1768396231.xml · nonDerivative · entry 4

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · General Partner of S4K Investments LLC.

Disclosed balance after: 135,441

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $4.315 to $4.38. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001790340-26-000002 · wk-form4_1767390602.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,888

Underlying: Class A Common Stock · 7,888 shares

Expires 2036-01-01

F1 · security: Pursuant to the Immuneering Corporation Non-Employee Director Compensation Program (the "Compensation Program"), the reporting person elected to receive this stock option in lieu of receiving the cash Base Retainer (as defined in the Compensation Program).

F2 · derivative.exercise_date: The option vests and becomes exercisable as to 25% of the shares subject to the option upon the reporting person completing three months of continuous service as a Non-Employee Director (as defined in the Compensation Program) following the grant date, such that the fourth and final installment will vest and become exercisable on the first anniversary of the grant date, subject in each case to such continuous service.

SEC source: 0001790340-25-000127 · wk-form4_1759841769.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,766

SEC source: 0001790340-25-000119 · wk-form4_1759323577.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 149,266

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $7.0049 to $7.055. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001790340-25-000117 · wk-form4_1759237255.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 141,766

SEC source: 0001790340-25-000083 · wk-form4_1750684190.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 136,766

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $2.07 to $2.96. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001790340-25-000069 · wk-form4_1750079056.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,350

Underlying: Class A Common Stock · 33,350 shares

Expires 2035-06-13

F1 · derivative.exercise_date: The option vests and becomes exercisable in equal monthly installments over a one-year period commencing on July 13, 2025, and will be fully vested and exercisable on June 13, 2026, or the date of the 2026 annual meeting of stockholders, whichever comes first.

SEC source: 0001790340-25-000007 · wk-form4_1735852326.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,485

Underlying: Class A Common Stock · 23,485 shares

Expires 2035-01-01

F1 · security: Pursuant to the Immuneering Corporation Non-Employee Director Compensation Program (the "Compensation Program"), the reporting person elected to receive this stock option in lieu of receiving the cash Base Retainer (as defined in the Compensation Program).

F2 · derivative.exercise_date: The option vests and becomes exercisable as to 25% of the shares subject to the option upon the reporting person completing three months of continuous service as a Non-Employee Director (as defined in the Compensation Program) following the grant date, such that the fourth and final installment will vest and become exercisable on the first anniversary of the grant date, subject in each case to such continuous service.

SEC source: 0001628280-24-028057 · wk-form4_1718310005.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,350

Underlying: Class A Common Stock · 33,350 shares

Expires 2034-06-12

F1 · derivative.exercise_date: The option vests and becomes exercisable in equal monthly installments over a one-year period commencing on July 12, 2024, and will be fully vested and exercisable on June 12, 2025, or the date of the 2025 annual meeting of stockholders, whichever comes first.

SEC source: 0001062993-24-009929 · form4.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,247

F1 · price: Grant of restricted shares vesting in two equal annual installments from the date of grant.

SEC source: 0001790340-24-000042 · wk-form4_1711372421.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 111,766

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $2.52 to $2.57. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001790340-24-000028 · wk-form4_1710889466.xml · nonDerivative · entry 3

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 86,766

SEC source: 0001790340-24-000028 · wk-form4_1710889466.xml · nonDerivative · entry 2

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,766

F2 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $2.9863 to $3.1799. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001790340-24-000028 · wk-form4_1710889466.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,790

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $1.96 to $2.9499. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of shares acquired at each price.

SEC source: 0001062993-24-001366 · form4.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,753

Underlying: Ordinary Shares · 9,753 shares

Expires 2034-01-24

F1 · derivative.exercise_date: Option vests 50% on the first anniversary of date of grant and thereafter in four equal quarterly installments ending on the second anniversary of the date of grant.

SEC source: 0001790340-24-000002 · wk-form4_1704230750.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,879

Underlying: Class A Common Stock · 6,879 shares

Expires 2034-01-01

F1 · security: Pursuant to the Immuneering Corporation Non-Employee Director Compensation Program (the "Compensation Program"), the reporting person elected to receive this stock option in lieu of receiving the cash Base Retainer (as defined in the Compensation Program).

F2 · derivative.exercise_date: The option vests and becomes exercisable as to 25% of the shares subject to the option upon the reporting person completing three months of continuous service as a Non-Employee Director (as defined in the Compensation Program) following the grant date, such that the fourth and final installment will vest and become exercisable on the first anniversary of the grant date, subject in each case to such continuous service.

SEC source: 0001790340-23-000035 · wk-form4_1686861302.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Class A Common Stock · 17,500 shares

Expires 2033-06-14

F1 · derivative.exercise_date: The option vests and becomes exercisable in substantially equal monthly installments over a one-year period with a vesting commencement date of June 14, 2023, and will be fully vested and exercisable on June 14, 2024, or the date of the 2024 annual meeting of stockholders, whichever comes first.

SEC source: 0001415889-22-006899 · form4-06232022_020630.xml · derivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,200

Underlying: Class A Common Stock · 14,200 shares

Expires 2032-06-20

F1 · derivative.exercise_date: The option vests and becomes exercisable in equal monthly installments over a one-year period commencing on July 21, 2022, and will be fully vested and exercisable on June 21, 2023, or the date of the 2023 annual meeting of stockholders, whichever comes first.

SEC source: 0001415889-22-003061 · form4-03162022_020302.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,766

F1 · price: This transaction was executed in multiple trades through a broker-dealer at a price of $6.75. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares acquired at such price.

SEC source: 0001415889-21-004512 · form4-09212021_020937.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,099

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $23.75 to $24.75. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares acquired at each price.

SEC source: 0001415889-21-004407 · form4-09152021_020922.xml · nonDerivative · entry 2

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 349

F2 · price: This transaction was executed in multiple trades through a broker-dealer at a price of $21.25. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares acquired at each price.

SEC source: 0001415889-21-004407 · form4-09152021_020922.xml · nonDerivative · entry 1

Feinberg Peter · CIK 0001870076 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · General Partner of PF Associates L.P.

Disclosed balance after: 392,242

F1 · price: This transaction was executed in multiple trades through a broker-dealer at prices ranging from $21.08 to $22.00. The price reported in this column reflects the weighted average purchase price. Upon request, the reporting person will provide to the SEC staff full information regarding the number of Shares acquired at each price.

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.