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Mougis Steven John

Disclosed activity across 1 company

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37087
SEC CIK
0002104368

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
DoubleVerify Holdings, Inc.DV · Entity 4486Global Chief Comm. OfficerSeptember 15, 2026September 17, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

DoubleVerify Holdings, Inc.

Report date September 15, 2026 · Filed September 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect116,676 Ending reported balance After 2026-09-15 transaction · row 14
14 source rows · reconciled sequence

Row 1 · 2026-09-15 · Exercise / conversion · Acquired 9,376 · Balance 104,536

F1: 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.

Row 2 · 2026-09-15 · Tax withholding · Disposed 4,787 · Balance 99,749

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

Row 3 · 2026-09-15 · Exercise / conversion · Acquired 841 · Balance 100,590

F3: Each performance stock unit was granted on March 31, 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.

Row 4 · 2026-09-15 · Tax withholding · Disposed 430 · Balance 100,160

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

Row 5 · 2026-09-15 · Exercise / conversion · Acquired 3,171 · Balance 103,331

F5: Each restricted stock unit was granted on March 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Row 6 · 2026-09-15 · Tax withholding · Disposed 1,619 · Balance 101,712

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

Row 7 · 2026-09-15 · Exercise / conversion · Acquired 27,056 · Balance 128,768

F6: Each restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Row 8 · 2026-09-15 · Tax withholding · Disposed 13,813 · Balance 114,955

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

Row 9 · 2026-09-15 · Exercise / conversion · Acquired 251 · Balance 115,206

F7: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Row 10 · 2026-09-15 · Tax withholding · Disposed 129 · Balance 115,077

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

Row 11 · 2026-09-15 · Exercise / conversion · Acquired 2,125 · Balance 117,202

F8: Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Row 12 · 2026-09-15 · Tax withholding · Disposed 1,085 · Balance 116,117

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

Row 13 · 2026-09-15 · Exercise / conversion · Acquired 1,143 · Balance 117,260

F9: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Row 14 · 2026-09-15 · Tax withholding · Disposed 584 · Balance 116,676

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

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect84,372 Reported balance After 2026-09-15 transaction · row 15 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 15 · 2026-09-15 · Exercise / conversion · Disposed 9,376 · Balance 84,372

F10: Restricted stock units convert into common stock on a one-for-one basis.

F1: 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.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect31,705 Reported balance After 2026-09-15 transaction · row 17 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 17 · 2026-09-15 · Exercise / conversion · Disposed 3,171 · Balance 31,705

F10: Restricted stock units convert into common stock on a one-for-one basis.

F5: Each restricted stock unit was granted on March 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect54,112 Reported balance After 2026-09-15 transaction · row 18 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 18 · 2026-09-15 · Exercise / conversion · Disposed 27,056 · Balance 54,112

F10: Restricted stock units convert into common stock on a one-for-one basis.

F6: Each restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect12,748 Reported balance After 2026-09-15 transaction · row 20 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 20 · 2026-09-15 · Exercise / conversion · Disposed 2,125 · Balance 12,748

F10: Restricted stock units convert into common stock on a one-for-one basis.

F8: Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Restricted Stock UnitsSEC Table II · derivative / convertible securityDirect2,286 Reported balance After 2026-09-15 transaction · row 21 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 21 · 2026-09-15 · Exercise / conversion · Disposed 1,143 · Balance 2,286

F10: Restricted stock units convert into common stock on a one-for-one basis.

F9: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Performance Stock UnitsSEC Table II · derivative / convertible securityDirect4,208 Reported balance After 2026-09-15 transaction · row 16 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 16 · 2026-09-15 · Exercise / conversion · Disposed 841 · Balance 4,208

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

F3: Each performance stock unit was granted on March 31, 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.

Performance Stock UnitsSEC Table II · derivative / convertible securityDirect251 Reported balance After 2026-09-15 transaction · row 19 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 19 · 2026-09-15 · Exercise / conversion · Disposed 251 · Balance 251

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

F7: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Filing footnotes · ownership attribution and instrument terms

F1: 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.

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

F3: Each performance stock unit was granted on March 31, 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.

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

F5: Each restricted stock unit was granted on March 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

F6: Each restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

F7: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

F8: Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F9: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F10: Restricted stock units convert into common stock on a one-for-one basis.

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

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 1,143 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 21

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,286

Underlying: Common Stock · 1,143 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.

F10 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F9 · derivative.exercise_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F9 · derivative.expiration_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 2,125 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 20

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,748

Underlying: Common Stock · 2,125 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.

F10 · 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 March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F8 · derivative.expiration_date: Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 251 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 19

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 251

Underlying: Common Stock · 251 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.

F7 · derivative.exercise_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

F7 · derivative.expiration_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 27,056 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 18

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 54,112

Underlying: Common Stock · 27,056 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.

F10 · 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 March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

F6 · derivative.expiration_date: Each restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 3,171 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 17

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,705

Underlying: Common Stock · 3,171 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.

F10 · 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 841 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 16

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,208

Underlying: Common Stock · 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.

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

F3 · derivative.exercise_date: Each performance stock unit was granted on March 31, 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.

F3 · derivative.expiration_date: Each performance stock unit was granted on March 31, 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.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 9,376 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · derivative · entry 15

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,372

Underlying: Common Stock · 9,376 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.

F10 · 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.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 584 $13.50 $7,884.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 14

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,676

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 1,143 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 13

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,260

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 restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 1,085 $13.50 $14,647.50
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 12

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,117

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 2,125 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 11

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,202

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 March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 129 $13.50 $1,741.50
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 10

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,077

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 251 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 9

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,206

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 performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 13,813 $13.50 $186,475.50
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 8

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,955

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 27,056 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 7

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,768

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 restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 1,619 $13.50 $21,856.50
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 6

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,712

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 3,171 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 5

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,331

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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 430 $13.50 $5,805.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 4

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,160

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 841 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 3

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,590

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 31, 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.

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 4,787 $13.50 $64,624.50
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 2

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,749

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

Read SEC document
September 15, 2026 Filed Sep 17, 2026 20:09 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 9,376 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000097 · form4.xml · nonDerivative · entry 1

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,536

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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 1,143 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 21

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,429

Underlying: Common Stock · 1,143 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.

F10 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F9 · derivative.exercise_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F9 · derivative.expiration_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 2,125 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 20

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,873

Underlying: Common Stock · 2,125 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.

F10 · 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 March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

F8 · derivative.expiration_date: Each restricted stock unit was granted on March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 250 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 19

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 502

Underlying: Common Stock · 250 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.

F7 · derivative.exercise_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

F7 · derivative.expiration_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 27,056 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 18

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,168

Underlying: Common Stock · 27,056 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.

F10 · 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 March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

F6 · derivative.expiration_date: Each restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 3,171 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 17

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,876

Underlying: Common Stock · 3,171 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.

F10 · 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 842 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 16

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,049

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.

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

F3 · derivative.exercise_date: Each performance stock unit was granted on March 31, 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.

F3 · derivative.expiration_date: Each performance stock unit was granted on March 31, 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 9,376 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · derivative · entry 15

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,748

Underlying: Common Stock · 9,376 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.

F10 · 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 413 $10.25 $4,233.25
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 14

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,160

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 1,143 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 13

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,573

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 restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 767 $10.25 $7,861.75
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 12

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 94,430

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 2,125 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 11

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,197

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 March 15, 2024. 6.25% of the restricted stock units vested and settled on June 15, 2024 (the "2024 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2024 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 91 $10.25 $932.75
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 10

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,072

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 250 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 9

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,163

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 performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest and settle at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 9,754 $10.25 $99,978.50
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 8

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,913

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 27,056 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 7

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,667

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 restricted stock unit was granted on March 13, 2025. 12.5% of the restricted stock units vested and were settled on the 2025 Vesting Date, and the remainder of the restricted stock units vest and settle at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 1,144 $10.25 $11,726.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 6

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,611

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 3,171 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 5

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,755

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.

F5 · price: Each restricted stock unit was granted on March 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 304 $10.25 $3,116.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 4

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,584

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 842 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 3

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,888

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 31, 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.

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Tax withholdingCommon Stock 4,474 $10.25 $45,858.50
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 2

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,046

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

Read SEC document
June 15, 2026 Filed Jun 17, 2026 20:11 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionCommon Stock 9,376 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000087 · form4.xml · nonDerivative · entry 1

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,520

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.

Read SEC document
May 31, 2026 Filed Jun 3, 2026 20:10 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 OtherCommon Stock 1,553 $8.25 $12,812.25
Disclosure

SEC source: 0001819928-26-000077 · form4.xml · nonDerivative · entry 1

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,144

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.

Read SEC document
March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 418 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 25

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 418 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: Restricted stock units convert into common stock on a one-for-one basis.

F10 · derivative.exercise_date: Each restricted stock unit was granted on February 15, 2022. 6.25% of the restricted stock units vested and settled on June 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

F10 · derivative.expiration_date: Each restricted stock unit was granted on February 15, 2022. 6.25% of the restricted stock units vested and settled on June 15, 2022 (the "2022 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2022 Vesting Date.

Read SEC document
March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 1,143 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 24

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,572

Underlying: Common Stock · 1,143 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: Restricted stock units convert into common stock on a one-for-one basis.

F9 · derivative.exercise_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

F9 · derivative.expiration_date: Each restricted stock unit was granted on March 15, 2023. 6.25% of the restricted stock units vested and settled on June 15, 2023 (the "2023 Vesting Date") and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2023 Vesting Date.

Read SEC document
March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 250 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 23

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 752

Underlying: Common Stock · 250 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: Performance stock units convert into common stock on a one-for-one basis.

F8 · derivative.exercise_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

F8 · derivative.expiration_date: Each performance stock unit was granted on March 15, 2024. 41.67% of the earned shares vested and were settled on March 15, 2025 (the "2025 PSU Vesting Date"), and the remainder of the earned shares vest at a rate of 8.33% on each quarterly anniversary of the 2025 PSU Vesting Date.

Read SEC document
March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 2,125 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 22

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,998

Underlying: Common Stock · 2,125 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: Restricted stock units convert into common stock on a one-for-one basis.

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

Read SEC document
March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 27,056 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 21

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 108,224

Underlying: Common Stock · 27,056 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: Restricted stock units convert into common stock on a one-for-one basis.

F6 · derivative.exercise_date: Each restricted stock unit was granted on March 13, 2025. The restricted stock units vested 12.5% on the 2025 Vesting Date, and the remainder of the restricted stock units vest at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

F6 · derivative.expiration_date: Each restricted stock unit was granted on March 13, 2025. The restricted stock units vested 12.5% on the 2025 Vesting Date, and the remainder of the restricted stock units vest at a rate of 12.5% on each quarterly anniversary of the 2025 Vesting Date.

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March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionRestricted Stock Units · Derivative 3,171 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 20

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 38,047

Underlying: Common Stock · 3,171 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: 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle 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 31, 2025. 6.25% of the restricted stock units vested and settled on June 15, 2025 (the "2025 Vesting Date"), and the remainder of the restricted stock units vest and settle at a rate of 6.25% on each quarterly anniversary of the 2025 Vesting Date.

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March 15, 2026 Filed Mar 16, 2026 20:13 UTC DoubleVerify Holdings, Inc. DV · Entity 4486 Exercise / conversionPerformance Stock Units · Derivative 4,210 $0.00 $0.00
Disclosure

SEC source: 0001819928-26-000033 · form4.xml · derivative · entry 19

Mougis Steven John · CIK 0002104368 · Global Chief Comm. Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,891

Underlying: Common Stock · 4,210 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: Performance stock units convert into common stock on a one-for-one basis.

F3 · derivative.exercise_date: Each performance stock unit was granted on March 31, 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.

F3 · derivative.expiration_date: Each performance stock unit was granted on March 31, 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.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.