DV

SEC source: 0001819928-26-000059 · form4.xml · derivative · entry 4

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F4 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F2 · ownership.nature: Represents shares and restricted stock units held by OPCR Tree LLC, which is wholly-owned by Mr. Jain.

SEC source: 0001819928-26-000059 · form4.xml · derivative · entry 3

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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.

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F1 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F2 · ownership.nature: Represents shares and restricted stock units held by OPCR Tree LLC, which is wholly-owned by Mr. Jain.

SEC source: 0001819928-26-000059 · form4.xml · nonDerivative · entry 1

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 25,333

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 restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F2 · ownership.nature: Represents shares and restricted stock units held by OPCR Tree LLC, which is wholly-owned by Mr. Jain.

SEC source: 0001819928-26-000067 · form4.xml · derivative · entry 3

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000067 · form4.xml · derivative · entry 2

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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.

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F1 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000067 · form4.xml · nonDerivative · entry 1

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,526

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 restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000061 · form4.xml · derivative · entry 2

Dobrin Lucy Stamell · CIK 0001853940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000061 · form4.xml · derivative · entry 1

Dobrin Lucy Stamell · CIK 0001853940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026. The shares of common stock were transferred to Providence Equity Partners L.L.C. pursuant to the terms of Providence Equity Partner L.L.C.'s internal policy.

F2 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026. The shares of common stock were transferred to Providence Equity Partners L.L.C. pursuant to the terms of Providence Equity Partner L.L.C.'s internal policy.

SEC source: 0001104659-26-065752 · tm2615412-1_4seq1.xml · nonDerivative · entry 1

Providence VII U.S. Holdings L.P. · CIK 0001854132 · 10% owner

Providence Equity GP VII-A L.P. · CIK 0001857469 · 10% owner

Providence Butternut Co-Investment L.P. · CIK 0001831271 · 10% owner

Phillips J. David · CIK 0001476657 · 10% owner

Tabet Karim A · CIK 0001857194 · 10% owner

Tisdale Andrew A · CIK 0001857411 · 10% owner

Dominguez Michael J · CIK 0001320307 · 10% owner

Providence Equity Partners L.L.C. · CIK 0001492133 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · By Providence Equity Partners L.L.C.

Disclosed balance after: 50,666

F1 · shares: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") acquired by Providence Equity Partners L.L.C. ("PEP LLC") after the transfer of the Issuer's common stock from Lucy Dobrin and R. Davis Noell. Lucy Dobrin and R. Davis Noell received the shares as board compensation for their service on the Issuer's board of directors and transferred the shares to PEP LLC pursuant to the terms of PEP LLC's internal policy.

F2 · ownership.nature: R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by PEP LLC. Each of R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by PEP LLC, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.

F3 · ownership.nature: The securities reported are held directly by PEP LLC and may be deemed to be beneficially owned by R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez due to their control of PEP LLC.

F4 · ownership.nature: R. Davis Noell has separately filed a Form 4.

SEC source: 0001819928-26-000071 · form4.xml · derivative · entry 1

Storms Jennifer · CIK 0001672302 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000069 · form4.xml · derivative · entry 3

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000069 · form4.xml · derivative · entry 2

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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.

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F1 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000069 · form4.xml · nonDerivative · entry 1

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,174

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 restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000057 · form4.xml · derivative · entry 5

Noell Robert Davis · CIK 0001472786 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F11 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F12 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F12 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000057 · form4.xml · nonDerivative · entry 1

Noell Robert Davis · CIK 0001472786 · Director · 10% owner

10b5-1 filing: No plan indicated

Ownership: Indirect · By Providence Equity Partners L.L.C.

Disclosed balance after: 50,666

F1 · shares: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") acquired by Providence Equity Partners L.L.C. ("PEP LLC") after the transfer of the Issuer's common stock from Lucy Dobrin and R. Davis Noell. Lucy Dobrin and R. Davis Noell received the shares as board compensation for their service on the Issuer's board of directors and transferred the shares to PEP LLC pursuant to the terms of PEP LLC's internal policy.

F2 · ownership.nature: R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by PEP LLC. Each of R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by PEP LLC, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.

F3 · ownership.nature: The securities reported are held directly by PEP LLC and may be deemed to be beneficially owned by R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez due to their control of PEP LLC.

F4 · ownership.nature: The record and other beneficial owners of the reported securities have separately filed Form 4s.

SEC source: 0001819928-26-000073 · form4.xml · derivative · entry 3

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

SEC source: 0001819928-26-000073 · form4.xml · derivative · entry 2

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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.

F2 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F1 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000073 · form4.xml · nonDerivative · entry 1

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,088

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 restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

SEC source: 0001819928-26-000063 · form4.xml · derivative · entry 3

Wagner Scott · CIK 0001342655 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F4 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service.

F2 · ownership.nature: Represents shares and restricted stock units held by Hilltopper LLC, which is wholly-owned by Mr. Wagner.

SEC source: 0001819928-26-000063 · form4.xml · derivative · entry 2

Wagner Scott · CIK 0001342655 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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.

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F1 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F2 · ownership.nature: Represents shares and restricted stock units held by Hilltopper LLC, which is wholly-owned by Mr. Wagner.

SEC source: 0001819928-26-000063 · form4.xml · nonDerivative · entry 1

Wagner Scott · CIK 0001342655 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 46,526

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 restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F2 · ownership.nature: Represents shares and restricted stock units held by Hilltopper LLC, which is wholly-owned by Mr. Wagner.

SEC source: 0001819928-26-000065 · form4.xml · derivative · entry 2

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 20,000

Underlying: Common Stock · 20,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service. Ms. Desmond made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares upon her end of service as a Director (in which case the shares will be delivered in a lump sum).

F5 · derivative.expiration_date: Represents time-based restricted stock units granted on May 21, 2026 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on the earlier of (i) May 21, 2027 and (ii) the date of DoubleVerify Holdings, Inc.'s 2027 Annual Meeting of Stockholders, subject to the reporting person's continued service. Ms. Desmond made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares upon her end of service as a Director (in which case the shares will be delivered in a lump sum).

F4 · ownership.nature: Represents restricted stock units held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001819928-26-000065 · form4.xml · derivative · entry 1

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 0

Underlying: Common Stock · 14,609 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: Restricted stock units convert into common stock on a one-for-one basis.

F2 · shares: As reported previously, the reporting person made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares to the earlier of (i) January 1, 2027 and (ii) the reporting person's end of service as a Director (in which case the shares will be delivered in a lump sum).

F3 · derivative.exercise_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F3 · derivative.expiration_date: Each restricted stock unit was granted on May 21, 2025 and represents a right to receive one share of common stock on a one-to-one basis. The restricted stock units fully vested on May 21, 2026.

F2 · derivative.underlying_shares: As reported previously, the reporting person made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares to the earlier of (i) January 1, 2027 and (ii) the reporting person's end of service as a Director (in which case the shares will be delivered in a lump sum).

F4 · ownership.nature: Represents restricted stock units held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001819928-26-000040 · form4.xml · derivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,756

Underlying: Common Stock · 13,476 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.

F3 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on August 19, 2025. 8.33% of the restricted stock units vested and were settled on December 31, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date, subject to Mr. Zagorski's continued employment.

F1 · derivative.expiration_date: Each restricted stock unit was granted on August 19, 2025. 8.33% of the restricted stock units vested and were settled on December 31, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date, subject to Mr. Zagorski's continued employment.

SEC source: 0001819928-26-000040 · form4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 546,742

F2 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001819928-26-000040 · form4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 554,195

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 restricted stock unit was granted on August 19, 2025. 8.33% of the restricted stock units vested and were settled on December 31, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date, subject to Mr. Zagorski's continued employment.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 19

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,186

Underlying: Common Stock · 4,062 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.

F9 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F8 · derivative.exercise_date: Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F8 · derivative.expiration_date: Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 18

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,238

Underlying: Common Stock · 3,034 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.

F9 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F7 · derivative.exercise_date: Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F7 · derivative.expiration_date: Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 17

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,218

Underlying: Common Stock · 1,071 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.

F11 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F6 · derivative.expiration_date: Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 16

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 74,404

Underlying: Common Stock · 6,764 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.

F9 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F5 · derivative.expiration_date: Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 15

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,710

Underlying: Common Stock · 26,938 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.

F11 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F12 · derivative.exercise_date: Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

F12 · derivative.expiration_date: Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · derivative · entry 14

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 164,998

Underlying: Common Stock · 15,002 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.

F9 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

F1 · derivative.expiration_date: Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 12

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,674

F2 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 11

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,311

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.

F8 · price: Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 10

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,249

F2 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 9

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 155,472

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.

F7 · price: Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 8

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,438

F4 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of performance stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 7

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,870

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.

F6 · price: Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 151,799

F2 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 154,525

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.

F5 · price: Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,761

F4 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of performance stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 158,618

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.

F3 · price: Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 131,680

F2 · kind: Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock units.

SEC source: 0001819928-26-000035 · form4.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 138,318

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 restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 13

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 2,500 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.

F7 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F6 · derivative.expiration_date: Each restricted stock unit was granted on December 12, 2022. 6.25% of the restricted stock units vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 12

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,685

Underlying: Common Stock · 2,384 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.

F7 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F5 · derivative.exercise_date: Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F5 · derivative.expiration_date: Each restricted stock unit was granted on December 19, 2023. 6.25% of the restricted stock units vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 11

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,528

Underlying: Common Stock · 842 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.

F9 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F4 · derivative.exercise_date: Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F4 · derivative.expiration_date: Each performance stock unit was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on the 2025 Vesting Date, and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 10

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 55,803

Underlying: Common Stock · 5,073 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.

F7 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F3 · derivative.expiration_date: Each restricted stock unit was granted on March 13, 2025. 6.25% of the restricted stock units vested and were settled on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 9

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,281

Underlying: Common Stock · 20,204 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.

F9 · derivative.exercise_price: Performance stock units convert into common stock on a one-for-one basis.

F2 · derivative.exercise_date: Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

F2 · derivative.expiration_date: Each performance stock unit was granted on March 13, 2025. 41.67% of the earned shares vested and were settled on the 2026 Vesting Date, and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

SEC source: 0001819928-26-000038 · form4.xml · derivative · entry 8

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 134,061

Underlying: Common Stock · 12,189 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.

F7 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.

F1 · derivative.expiration_date: Each restricted stock unit was granted on March 12, 2026. 8.33% of the restricted stock units vested and were settled on March 15, 2026 (the "2026 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 8.33% on each quarterly anniversary of the 2026 Vesting Date.