DoubleVerify Holdings, Inc. — Director's Dealing 2021

May 10, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DoubleVerify Holdings, Inc. (DV)
CIK: 0001819928
Period of Report: 2021-04-20

Reporting Person: Zagorski Mark (Director, Chief Executive Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-04-20	Common Stock	M	62500	—	Acquired	247205	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-04-20	Restricted Stock Units	$	M	62500	Disposed		Common Stock (62500)	Direct

Footnotes

F1: 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.

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