DV

SEC source: 0000950170-25-040532 · ownership.xml · nonDerivative · entry 4

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,357

F4 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 5,074 RSUs on March 15, 2025.

SEC source: 0000950170-25-040532 · ownership.xml · nonDerivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,885

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 restricted stock unit "RSU" was granted on March 13, 2025. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040532 · ownership.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,811

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 4,211 PSUs on March 15, 2025.

SEC source: 0000950170-25-040532 · ownership.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 69,080

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 performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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: 0000950170-25-040510 · ownership.xml · derivative · entry 16

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,465

Underlying: Common Stock · 2,489 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: RSUs convert into common stock on a one-for-one basis.

F9 · derivative.exercise_date: Each RSU was granted on December 10, 2021. 6.25% of the RSUs vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

F9 · derivative.expiration_date: Each RSU was granted on December 10, 2021. 6.25% of the RSUs vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · derivative · entry 15

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,434

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.

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

F7 · derivative.exercise_date: Each RSU was granted on December 12, 2022. 6.25% of the RSUs vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F7 · derivative.expiration_date: Each RSU was granted on December 12, 2022. 6.25% of the RSUs vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · derivative · entry 14

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,374

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.

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

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

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

SEC source: 0000950170-25-040510 · ownership.xml · derivative · entry 13

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,460

Underlying: Common Stock · 6,765 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: RSUs convert into common stock on a one-for-one basis.

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

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

SEC source: 0000950170-25-040510 · ownership.xml · derivative · entry 12

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,504

Underlying: Common Stock · 5,360 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.

F13 · derivative.exercise_price: PSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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.

F1 · derivative.expiration_date: Each performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 10

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,839

F10 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 2,489 RSUs on March 15, 2025.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 9

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,843

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

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 8

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,354

F8 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 4,062 RSUs on March 15, 2025.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 7

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,991

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 RSU was granted on December 12, 2022. 6.25% of the RSUs vested and were settled on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,929

F6 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 3,034 RSUs on March 15, 2025.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,152

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 RSU was granted on December 19, 2023. 6.25% of the RSUs vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,118

F4 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 6,765 RSUs on March 15, 2025.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,845

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 restricted stock unit "RSU" was granted on March 13, 2025. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,080

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 5,360 PSUs on March 15, 2025.

SEC source: 0000950170-25-040510 · ownership.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 91,242

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 performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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: 0000950170-25-040534 · ownership.xml · derivative · entry 14

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,625

Underlying: Common Stock · 9,375 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: RSUs convert into common stock on a one-for-one basis.

F12 · shares: As reported previously, vested shares will be delivered to the reporting person as soon as administratively feasible following his separation from service with the Issuer.

F13 · derivative.exercise_date: Each RSU was granted on December 12, 2022. 6.25% of the RSUs vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F13 · derivative.expiration_date: Each RSU was granted on December 12, 2022. 6.25% of the RSUs vested on March 15, 2023 (the "2023 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F12 · derivative.underlying_shares: As reported previously, vested shares will be delivered to the reporting person as soon as administratively feasible following his separation from service with the Issuer.

SEC source: 0000950170-25-040534 · ownership.xml · derivative · entry 13

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,413

Underlying: Common Stock · 6,471 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: RSUs convert into common stock on a one-for-one basis.

F7 · derivative.exercise_date: Each RSU was granted on December 10, 2021. 6.25% of the RSUs vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

F7 · derivative.expiration_date: Each RSU was granted on December 10, 2021. 6.25% of the RSUs vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0000950170-25-040534 · ownership.xml · derivative · entry 12

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 85,817

Underlying: Common Stock · 7,802 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: RSUs convert into common stock on a one-for-one basis.

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

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

SEC source: 0000950170-25-040534 · ownership.xml · derivative · entry 11

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 228,286

Underlying: Common Stock · 15,220 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: RSUs convert into common stock on a one-for-one basis.

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

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

SEC source: 0000950170-25-040534 · ownership.xml · derivative · entry 10

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,296

Underlying: Common Stock · 13,782 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: PSUs convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: Each performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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.

F1 · derivative.expiration_date: Each performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 8

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 438,085

F8 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 6,471 RSUs on March 15, 2025.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 7

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 440,693

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 RSU was granted on December 10, 2021. 6.25% of the RSUs vested and were settled on March 15, 2022 (the "2022 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 6

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 434,222

F6 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 7,802 RSUs on March 15, 2025.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 5

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 437,367

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 RSU was granted on December 19, 2023. 6.25% of the RSUs vested and were settled on March 15, 2024 (the "2024 Vesting Date"), and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 4

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 429,565

F4 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 15,220 RSUs on March 15, 2025.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 435,916

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 restricted stock unit "RSU" was granted on March 13, 2025. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 420,696

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 13,782 PSUs on March 15, 2025.

SEC source: 0000950170-25-040534 · ownership.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 426,251

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 performance stock unit "PSU" was granted on December 19, 2023. 41.67% of the earned shares vested and were settled on March 15, 2025 (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: 0000950170-25-040517 · ownership.xml · derivative · entry 11

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,169

Underlying: Common Stock · 81,169 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 RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F12 · derivative.expiration_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040532 · ownership.xml · derivative · entry 11

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,169

Underlying: Common Stock · 81,169 shares

Expires not disclosed

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

F12 · derivative.exercise_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F12 · derivative.expiration_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040510 · ownership.xml · derivative · entry 11

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,225

Underlying: Common Stock · 108,225 shares

Expires not disclosed

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

F12 · derivative.exercise_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F12 · derivative.expiration_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-040534 · ownership.xml · derivative · entry 9

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 243,506

Underlying: Common Stock · 243,506 shares

Expires not disclosed

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

F10 · derivative.exercise_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F10 · derivative.expiration_date: Represents RSUs granted to the Reporting Person on March 13, 2025, pursuant to the annual equity compensation under DoubleVerify Holdings, Inc.'s 2025 long-term incentive plan. 6.25% of the RSUs vested and were settled on the 2025 Vesting Date, and the remainder of the RSUs vest at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-036311 · ownership.xml · derivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,864

Underlying: Common Stock · 12,864 shares

Expires not disclosed

F1 · security: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

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

F1 · shares: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.exercise_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.expiration_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-036317 · ownership.xml · derivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,107

Underlying: Common Stock · 10,107 shares

Expires not disclosed

F1 · security: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 19,071 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 10,107 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

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

F1 · shares: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 19,071 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 10,107 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.exercise_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 19,071 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 10,107 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.expiration_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 19,071 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 10,107 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-036310 · ownership.xml · derivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,864

Underlying: Common Stock · 12,864 shares

Expires not disclosed

F1 · security: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

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

F1 · shares: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.exercise_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.expiration_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 24,272 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 12,864 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-036315 · ownership.xml · derivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,078

Underlying: Common Stock · 33,078 shares

Expires not disclosed

F1 · security: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 62,413 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 33,078 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

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

F1 · shares: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 62,413 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 33,078 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.exercise_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 62,413 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 33,078 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

F1 · derivative.expiration_date: On December 19, 2023, the Reporting Person received a performance stock unit ("PSU") grant of 62,413 units. In light of the performance based conditions of the award, the award was not reportable under Section 16 until the performance-based conditions were certified by the Issuer's Compensation Committee. Such certification occurred on March 6, 2025, pursuant to which 33,078 shares were earned. 41.67% of the earned shares will vest and settle on March 15, 2025 (the "2025 Vesting Date"), and the remainder of the earned shares will vest at a rate of 8.33% on each quarterly anniversary of the 2025 Vesting Date.

SEC source: 0000950170-25-025654 · 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 · 4,841 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 February 20, 2024 and represents a right to receive one share of common stock on a one to one basis. The RSUs fully vested on February 20, 2025.

F1 · derivative.expiration_date: Each Restricted Stock Unit ("RSU") was granted on February 20, 2024 and represents a right to receive one share of common stock on a one to one basis. The RSUs fully vested on February 20, 2025.

SEC source: 0000950170-25-025654 · ownership.xml · nonDerivative · entry 1

Swidler Gary · CIK 0001658502 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,841

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 20, 2024 and represents a right to receive one share of common stock on a one to one basis. The RSUs fully vested on February 20, 2025.

SEC source: 0000950170-25-023202 · ownership.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,982 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 to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date. The RSUs fully vested on February 15, 2025.

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 to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date. The RSUs fully vested on February 15, 2025.

SEC source: 0000950170-25-023202 · ownership.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,869

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,982 RSUs on February 15, 2025.

SEC source: 0000950170-25-023202 · ownership.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,571

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 to vest at a rate of 6.25% per quarter thereafter, subject to Mr. Grimmig's continued employment through the applicable vesting date. The RSUs fully vested on February 15, 2025.

SEC source: 0000950170-25-018847 · ownership.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 270,794

Underlying: Common Stock · 2,220 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: 0000950170-25-018847 · ownership.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 85,882

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 9, 2024.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $22.04 to $22.61, 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: 0000950170-25-018847 · ownership.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 88,102

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: 0000950170-25-018847 · ownership.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 273,014

Underlying: Common Stock · 2,220 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: 0000950170-25-018847 · ownership.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 85,882

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 9, 2024.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $21.76 to $22.01, 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.