DV

SEC source: 0000950170-24-074820 · ownership.xml · nonDerivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 386,209

F3 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 6,471 restricted stock units on June 15, 2024.

SEC source: 0000950170-24-074820 · ownership.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 389,788

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 · price: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0000950170-24-069313 · ownership.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 337,208

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-069313 · ownership.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $17.81 to $17.95, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-069313 · ownership.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0000950170-24-069313 · ownership.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 338,972

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-069313 · ownership.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $18.32 to $18.49, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-069313 · ownership.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0000950170-24-074818 · ownership.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 147,441

F1 · kind: Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

F1 · price: Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

SEC source: 0000950170-24-074820 · ownership.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 383,317

F1 · kind: Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

F1 · price: Pursuant to the DoubleVerify Holdings, Inc. 2021 Employee Stock Purchase Plan (ESPP), the purchase price per share reported reflects a discount of 15% of the lesser of the share price at the first day of the offering period or the purchase date.

SEC source: 0000950170-24-065196 · ownership.xml · derivative · entry 3

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Jain's continued services.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Jain's continued services.

SEC source: 0000950170-24-065196 · ownership.xml · derivative · entry 2

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,709 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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065196 · ownership.xml · nonDerivative · entry 1

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,176

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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065198 · ownership.xml · derivative · entry 3

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Perez's continued services.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Perez's continued services.

SEC source: 0000950170-24-065198 · ownership.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 · 5,709 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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065198 · ownership.xml · nonDerivative · entry 1

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,193

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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065223 · ownership.xml · derivative · entry 1

Dobrin Lucy Stamell · CIK 0001853940 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Dobrin's continued services.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Dobrin's continued services.

SEC source: 0000950170-24-065220 · ownership.xml · derivative · entry 1

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Swidler's continued services.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Swidler's continued services.

SEC source: 0000950170-24-065219 · ownership.xml · derivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Noell's continued services.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Noell's continued services.

SEC source: 0000950170-24-065193 · ownership.xml · derivative · entry 3

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Turner's continued services.

F3 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Turner's continued services.

SEC source: 0000950170-24-065193 · ownership.xml · derivative · entry 2

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,709 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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065193 · ownership.xml · nonDerivative · entry 1

Turner Kelli · CIK 0001459490 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,755

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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

SEC source: 0000950170-24-065195 · ownership.xml · derivative · entry 3

Wagner Scott · CIK 0001342655 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Wagner's continued services.

F4 · derivative.expiration_date: Represents time-based restricted stock units granted on May 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Mr. Wagner's continued services.

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

SEC source: 0000950170-24-065195 · ownership.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 · 5,709 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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

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

SEC source: 0000950170-24-065195 · ownership.xml · nonDerivative · entry 1

Wagner Scott · CIK 0001342655 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By LLC

Disclosed balance after: 21,193

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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

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

SEC source: 0000950170-24-065200 · ownership.xml · derivative · entry 2

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By Trust

Disclosed balance after: 10,724

Underlying: Common Stock · 10,724 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Desmond's continued services. Ms. Desmond made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares to the earlier of (i) January 1, 2026 and (ii) the reporting person's 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 23, 2024 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 23, 2025 and (ii) the date of DoubleVerify Holdings, Inc.'s 2025 Annual Meeting of Stockholders, subject to Ms. Desmond's continued services. Ms. Desmond made an election under the Issuer's deferred compensation plan to defer delivery of the vested shares to the earlier of (i) January 1, 2026 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: 0000950170-24-065200 · ownership.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 · 5,709 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) 2025 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 ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

F3 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on June 5, 2023 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 23, 2024.

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) 2025 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: 0000950170-25-077085 · ownership.xml · derivative · entry 2

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,724 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 ("RSU") was granted on May 23, 2024 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 21, 2025.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on May 23, 2024 and represents a right to receive one share of common stock on a one-to-one basis. The RSUs fully vested on May 21, 2025.

SEC source: 0000950170-24-063479 · ownership.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 340,736

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-063479 · ownership.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $18.76 to $18.845, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-063479 · ownership.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0000950170-24-063479 · ownership.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 342,500

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-063479 · ownership.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $19.565 to $19.585, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-063479 · ownership.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0000950170-24-061600 · ownership.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,947

Underlying: Common Stock · 1,983 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: RSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

SEC source: 0000950170-24-061600 · ownership.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,493

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,983 RSUs on May 15, 2024.

SEC source: 0000950170-24-061600 · ownership.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,451

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 ("RSU") was granted on February 17, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on February 15, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date.

SEC source: 0000950170-24-060438 · ownership.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 344,264

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-060438 · ownership.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $19.32 to $19.52, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-060438 · ownership.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0000950170-24-060438 · ownership.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 346,028

Underlying: Common Stock · 1,764 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0000950170-24-060438 · ownership.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $19.00 to $19.08, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0000950170-24-060438 · ownership.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 74,794

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.

SEC source: 0001209191-24-005588 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 145,944

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 17, 2023.

SEC source: 0001209191-24-005434 · doc4.xml · derivative · entry 3

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,966

Underlying: Common Stock · 12,322 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: RSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

SEC source: 0001209191-24-005434 · doc4.xml · nonDerivative · entry 2

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,844

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 12,322 RSUs on April 26, 2024.

SEC source: 0001209191-24-005434 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,124

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 ("RSU") was granted on January 28, 2021 and represents a right to receive one share of common stock on a one-to-one basis. 25% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering of common stock of DoubleVerify Holdings, Inc. 25% of the remaining RSUs vested and were settled on January 26, 2022, and the other remaining RSUs have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Eddleman's continued employment through the applicable vesting date.

SEC source: 0001209191-24-005386 · doc4.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 347,792

Underlying: Common Stock · 5,292 shares

Expires 2028-01-04

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.

F4 · derivative.exercise_date: Represents non-qualified stock options granted on January 4, 2018, 25% of which vested on November 6, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Mr. Allais's continued employment. The options fully vested on November 6, 2021.

SEC source: 0001209191-24-005386 · doc4.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 73,030

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 14, 2023.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $30.685 to $30.94, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-24-005386 · doc4.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,322

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.