DV

SEC source: 0001209191-22-050485 · doc4.xml · derivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,355

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.

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

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-22-050485 · doc4.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,335

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 2,489 restricted stock units on September 15, 2022.

SEC source: 0001209191-22-050485 · doc4.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 52,764

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

SEC source: 0001209191-22-050487 · doc4.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,411

Underlying: Common Stock · 1,494 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.

F4 · derivative.exercise_price: Restricted stock units convert into common stock on a one-for-one basis.

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-22-050487 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,606

F2 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 17, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.00 to $29.12, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-050487 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,306

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

SEC source: 0001209191-22-050488 · doc4.xml · derivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,123

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.

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

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-22-050488 · doc4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 323,294

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 6,471 RSUs on September 15, 2022.

SEC source: 0001209191-22-050488 · doc4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 326,623

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

SEC source: 0001209191-22-050080 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,812

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 March 17, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.00 to $29.07, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-049921 · doc4.xml · derivative · entry 6

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 740,562

Underlying: Common Stock · 4,821 shares

Expires 2028-01-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

SEC source: 0001209191-22-049921 · doc4.xml · nonDerivative · entry 4

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,275

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person and accepted by the issuer on August 12, 2022.

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $27.87 to $28.36, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-049921 · doc4.xml · nonDerivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,096

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-050080 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,412

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 March 17, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.00 to $29.03, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-049921 · doc4.xml · derivative · entry 5

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 745,383

Underlying: Common Stock · 4,833 shares

Expires 2028-01-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

SEC source: 0001209191-22-049921 · doc4.xml · nonDerivative · entry 2

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,275

F1 · kind: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person and accepted by the issuer on August 12, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $29.13 to $29.41, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-049921 · doc4.xml · nonDerivative · entry 1

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,108

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-049146 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,618

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 March 31, 2022.

SEC source: 0001209191-22-047477 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 112,918

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 March 31, 2022.

SEC source: 0001209191-22-046217 · doc4.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,828

Underlying: Common Stock · 1,983 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

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

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

SEC source: 0001209191-22-046217 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,912

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,983 RSUs on August 15, 2022.

SEC source: 0001209191-22-046217 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 60,870

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

SEC source: 0001209191-22-046222 · doc4.xml · derivative · entry 3

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 626,038

Underlying: Common Stock · 50,657 shares

Expires 2027-09-20

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 · shares: Represents non-qualified stock options granted on September 20, 2017, 25% of which vested on September 20, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Ms. Desmond's continued service. The options fully vested on September 20, 2021.

F3 · derivative.exercise_date: Represents non-qualified stock options granted on September 20, 2017, 25% of which vested on September 20, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Ms. Desmond's continued service. The options fully vested on September 20, 2021.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-046222 · doc4.xml · nonDerivative · entry 2

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 179,071

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $27.00 to $27.10, 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.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-046222 · doc4.xml · nonDerivative · entry 1

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 229,728

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 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-045636 · doc4.xml · nonDerivative · entry 3

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

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

Providence Public Master L.P. · CIK 0001857463 · 10% owner

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

NELSON JONATHAN M · CIK 0001035233 · 10% owner

Phillips J. David · CIK 0001476657 · 10% owner

Tabet Karim A · CIK 0001857194 · 10% owner

Tisdale Andrew A · CIK 0001857411 · 10% owner

Dominguez Michael J · CIK 0001320307 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Providence Public Master L.P.

Disclosed balance after: 671,520

F8 · shares: The securities reported represent shares of common stock of the Issuer sold by Providence Public Master L.P. in a block trade at a net price per share of $25.75.

F8 · price: The securities reported represent shares of common stock of the Issuer sold by Providence Public Master L.P. in a block trade at a net price per share of $25.75.

F9 · ownership.nature: The securities reported are held directly by Providence Public Master L.P. Providence Public Master L.P. is an investment fund affiliated with Providence VII and thus Providence VII may be deemed to beneficially own the securities held by Providence Public Master L.P.

SEC source: 0001209191-22-045636 · doc4.xml · nonDerivative · entry 2

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

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

Providence Public Master L.P. · CIK 0001857463 · 10% owner

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

NELSON JONATHAN M · CIK 0001035233 · 10% owner

Phillips J. David · CIK 0001476657 · 10% owner

Tabet Karim A · CIK 0001857194 · 10% owner

Tisdale Andrew A · CIK 0001857411 · 10% owner

Dominguez Michael J · CIK 0001320307 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Providence Butternut Co-Investment L.P.

Disclosed balance after: 501,864

F5 · shares: The securities reported represent shares of common stock of the Issuer sold by Providence Butternut Co-Investment L.P. ("Providence Butternut") in a block trade at a net price per share of $25.75.

F5 · price: The securities reported represent shares of common stock of the Issuer sold by Providence Butternut Co-Investment L.P. ("Providence Butternut") in a block trade at a net price per share of $25.75.

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

F6 · ownership.nature: The securities reported are held directly by Providence Butternut and may be deemed to be beneficially owned by Providence GP because Providence GP is the general partner of Providence Butternut. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Holdco, which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP.

F7 · ownership.nature: Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence Butternut due to their relationships with Holdco. Each of Providence GP, Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by Providence Butternut, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.

SEC source: 0001209191-22-045636 · doc4.xml · nonDerivative · entry 1

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

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

Providence Public Master L.P. · CIK 0001857463 · 10% owner

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

NELSON JONATHAN M · CIK 0001035233 · 10% owner

Phillips J. David · CIK 0001476657 · 10% owner

Tabet Karim A · CIK 0001857194 · 10% owner

Tisdale Andrew A · CIK 0001857411 · 10% owner

Dominguez Michael J · CIK 0001320307 · 10% owner

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,867,524

F1 · shares: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") sold by Providence VII U.S. Holdings L.P. ("Providence VII") in a block trade at a net price per share of $25.75.

F1 · price: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") sold by Providence VII U.S. Holdings L.P. ("Providence VII") in a block trade at a net price per share of $25.75.

F2 · ownership.direct: The securities reported are held directly by Providence VII and may be deemed to be beneficially owned by Providence Equity GP VII-A L.P. ("Providence GP") because Providence GP is the general partner of Providence VII. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Providence Holdco (International) GP Ltd. ("Holdco"), which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP.

F3 · ownership.direct: Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence VII due to their relationships with Holdco. Each of Providence GP, Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez hereby disclaims beneficial ownership of the shares held by Providence VII, except to the extent of its or his pecuniary interest therein, and this form shall not be construed as an admission that any such reporting person is the beneficial owner of any of the securities reported on this form.

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

SEC source: 0001209191-22-045641 · doc4.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Providence Public Master L.P.

Disclosed balance after: 671,520

F8 · shares: The securities reported represent shares of common stock of the Issuer sold by Providence Public Master L.P. in a block trade at a net price per share of $25.75.

F8 · price: The securities reported represent shares of common stock of the Issuer sold by Providence Public Master L.P. in a block trade at a net price per share of $25.75.

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

F9 · ownership.nature: The securities reported are held directly by Providence Public Master L.P. Providence Public Master L.P. is an investment fund affiliated with Providence VII and thus Providence VII and R. Davis Noell may be deemed to beneficially own the securities held by Providence Public Master L.P.

F10 · ownership.nature: R. Davis Noell hereby disclaims beneficial ownership of the securities held by Providence Public Master L.P., except to the extent of his pecuniary interest therein, and this form shall not be construed as an admission that R. Davis Noell is the beneficial owner of any of the securities reported on this form.

SEC source: 0001209191-22-045641 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Indirect · By Providence Butternut Co-Investment L.P.

Disclosed balance after: 501,864

F5 · shares: The securities reported represent shares of common stock of the Issuer sold by Providence Butternut Co-Investment L.P. ("Providence Butternut") in a block trade at a net price per share of $25.75.

F5 · price: The securities reported represent shares of common stock of the Issuer sold by Providence Butternut Co-Investment L.P. ("Providence Butternut") in a block trade at a net price per share of $25.75.

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

F6 · ownership.nature: The securities reported are held directly by Providence Butternut and may be deemed to be beneficially owned by Providence GP because Providence GP is the general partner of Providence Butternut. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Holdco, which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP.

F7 · ownership.nature: Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence Butternut due to their relationships with Holdco. R. Davis Noell hereby disclaims beneficial ownership of the shares held by Providence Butternut, except to the extent of his pecuniary interest therein, and this form shall not be construed as an admission that R. Davis Noell is the beneficial owner of any of the securities reported on this form.

SEC source: 0001209191-22-045641 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnotes

Disclosed balance after: 77,867,524

F1 · shares: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") sold by Providence VII U.S. Holdings L.P. ("Providence VII") in a block trade at a net price per share of $25.75.

F1 · price: The securities reported represent shares of common stock of DoubleVerify Holdings, Inc. (the "Issuer") sold by Providence VII U.S. Holdings L.P. ("Providence VII") in a block trade at a net price per share of $25.75.

F2 · ownership.nature: The securities reported are held directly by Providence VII and may be deemed to be beneficially owned by Providence Equity GP VII-A L.P. ("Providence GP") because Providence GP is the general partner of Providence VII. Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez control Providence Holdco (International) GP Ltd. ("Holdco"), which is the general partner of Providence Fund Holdco (International) L.P. Providence Fund Holdco (International) L.P. is the general partner of PEP VII-A International Ltd., which is the general partner of Providence GP.

F3 · ownership.nature: Jonathan M. Nelson, R. Davis Noell, J. David Phillips, Karim A. Tabet, Andrew A. Tisdale and Michael J. Dominguez may be deemed to exercise voting and investment power over, and thus may be deemed to beneficially own, the securities held by Providence VII due to their relationships with Holdco. R. Davis Noell hereby disclaims beneficial ownership of the shares held by Providence VII, except to the extent of his pecuniary interest therein, and this form shall not be construed as an admission that R. Davis Noell is the beneficial owner of any of the securities reported on this form.

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

SEC source: 0001209191-22-045407 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 113,218

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 March 31, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $26.01 to $26.41, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-045190 · doc4.xml · derivative · entry 3

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 316,173

Underlying: Common Stock · 125,000 shares

Expires 2030-04-27

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 · shares: Represents non-qualified stock options granted on April 27, 2020 that vested on November 22, 2021 upon Providence VII U.S. Holdings L.P. receiving cumulative cash proceeds in respect of its investment in the Issuer equal to two times its aggregate cash investment in the Issuer.

SEC source: 0001209191-22-045190 · doc4.xml · nonDerivative · entry 2

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,887

F1 · kind: Includes 76,296 shares sold to satisfy tax obligations and exercise price in connection with the exercise of 125,000 stock options on August 8, 2022.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.99 to $26.74, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth above.

SEC source: 0001209191-22-045190 · doc4.xml · nonDerivative · entry 1

Grimmig Andrew E · CIK 0001854079 · Chief Legal Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,183

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001209191-22-045191 · doc4.xml · derivative · entry 3

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 676,695

Underlying: Common Stock · 45,000 shares

Expires 2027-09-20

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 · shares: Represents non-qualified stock options granted on September 20, 2017, 25% of which vested on September 20, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Ms. Desmond's continued service. The options fully vested on September 20, 2021.

F3 · derivative.exercise_date: Represents non-qualified stock options granted on September 20, 2017, 25% of which vested on September 20, 2018 and the remainder of which vested at a rate of 6.25% per quarter thereafter, subject to Ms. Desmond's continued service. The options fully vested on September 20, 2021.

F4 · balance_after: The total was increased by one share due to an administrative calculation error due to rounding of the vested amount.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-045191 · doc4.xml · nonDerivative · entry 2

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 179,071

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions ranging from $25.99 to $26.74, 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.

F1 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-045191 · doc4.xml · nonDerivative · entry 1

Desmond Laura · CIK 0001550028 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 224,071

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 · ownership.nature: Represents shares and options held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee.

SEC source: 0001209191-22-043409 · doc4.xml · derivative · entry 3

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 123,225

Underlying: Common Stock · 12,323 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

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

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

SEC source: 0001209191-22-043409 · doc4.xml · nonDerivative · entry 2

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,518

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 12,323 RSUs on July 26, 2022.

SEC source: 0001209191-22-043409 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 121,799

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

SEC source: 0001209191-22-041073 · doc4.xml · derivative · entry 1

Jain Sundeep · CIK 0001936390 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,467

Underlying: Common Stock · 8,467 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Represents time-based restricted stock units granted on July 1, 2022 pursuant to DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on July 1, 2023, subject to Mr. Jain's continued service.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on July 1, 2022 pursuant to DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on July 1, 2023, subject to Mr. Jain's continued service.

SEC source: 0001209191-22-040555 · doc4.xml · derivative · entry 3

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,750

Underlying: Common Stock · 10,417 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

F1 · derivative.exercise_date: Each restricted stock unit ("RSU") was granted on July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs will vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") was granted on July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs will vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

SEC source: 0001209191-22-040555 · doc4.xml · nonDerivative · entry 2

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 320,152

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 10,417 RSUs on June 30, 2022.

SEC source: 0001209191-22-040555 · doc4.xml · nonDerivative · entry 1

Zagorski Mark · CIK 0001709574 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 324,567

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 July 28, 2020 and represents a right to receive one share of common stock on a one-to-one basis. 37.5% of the RSUs vested and were settled on April 20, 2021, upon the initial public offering (the "IPO") of common stock of DoubleVerify Holdings, Inc. The remaining RSUs will vest on the original vesting schedule as though the IPO had not occurred, subject to Mr. Zagorksi's continued employment through the applicable vesting date.

SEC source: 0001209191-22-037925 · doc4.xml · derivative · entry 1

Perez Rosario C · CIK 0001886750 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,183

Underlying: Common Stock · 9,183 shares

Expires not disclosed

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

F2 · derivative.exercise_date: Represents time-based restricted stock units granted on June 15, 2022 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on June 1, 2023, subject to Ms. Perez's continued services.

F2 · derivative.expiration_date: Represents time-based restricted stock units granted on June 15, 2022 pursuant to the annual equity grant under DoubleVerify Holdings, Inc.'s non-employee director compensation program. The restricted stock units vest on June 1, 2023, subject to Ms. Perez's continued services.

SEC source: 0001209191-22-037921 · doc4.xml · derivative · entry 3

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,874

Underlying: Common Stock · 1,991 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

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

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

SEC source: 0001209191-22-037921 · doc4.xml · nonDerivative · entry 2

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 109,476

F2 · kind: Represents shares withheld to satisfy tax obligations in connection with the vesting of 1,991 restricted stock units on June 15, 2022.

SEC source: 0001209191-22-037921 · doc4.xml · nonDerivative · entry 1

Eddleman Julie · CIK 0001853942 · Global Chief Comm. Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 110,330

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

SEC source: 0001209191-22-037919 · doc4.xml · derivative · entry 3

Allais Nicola T · CIK 0001854086 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,844

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.

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

F1 · derivative.exercise_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.

F1 · derivative.expiration_date: The restricted stock units were granted on December 10, 2021. 6.25% of the restricted stock units vested and were settled on March 15, 2022 (the "Vesting Date"), and the remainder of the restricted stock units vest at a rate of 6.25% on each quarterly anniversary of the Vesting Date.