Mark Zagorski - Mar 31, 2023 Form 4 Insider Report for DoubleVerify Holdings, Inc. (DV)

Role: Chief Executive Officer, Director
Signature: /s/ Andrew E. Grimmig, as Attorney-in-Fact for Mark S. Zagorski
Stock symbol: DV
Transactions as of: Mar 31, 2023
Transactions value $: -$133,112
Form type: 4
Date filed: 4/4/2023, 04:06 PM
Previous filing: Mar 17, 2023
Next filing: Jun 20, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	DV	Common Stock	Options Exercise	$0	+10.4K	+3.08%	$0.00	349K	Mar 31, 2023	Direct	F1
transaction	DV	Common Stock	Tax liability	-$133K	-4.42K	-1.27%	$30.15	345K	Mar 31, 2023	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	DV	Restricted Stock Units	Options Exercise	$0	-10.4K	-14.29%	$0.00	62.5K	Mar 31, 2023	Common Stock	10.4K		Direct	F1, F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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 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	Represents shares withheld to satisfy tax obligations in connection with the vesting of 10,417 RSUs on March 31, 2023.
F3	Restricted stock units convert into common stock on a one-for-one basis.