ZAGORSKI MARK (Chief Executive Officer) exercised options at DOUBLEVERIFY HOLDINGS, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 5 exercises

ZAGORSKI MARK

Filed: 6/17/2026ACC: 0001819928-26-000083

InsiderZAGORSKI MARKCIK 1709574

→

IssuerDOUBLEVERIFY HOLDINGS, INC.CIK 1819928

DirectorOfficer· Chief Executive Officer

Since Apr 2021

-43.01K

Net shares

Net seller

$344.8K

Total sold

Open market trades

0B · 0S

Total transactions

60.82K acquired · 103.83K disposed

Non-Derivative Transactions10

Common Stock

Direct

M · Option Exercise

+22.92K

Price / share

—

Trade value

—

% of position

4.2%

6/15/2026

547.16K→570.08K

Common Stock

Direct

F · Tax Withholding

−12.68K

Price / share

$10.25

Trade value

$129.92K

% of position

2.2%

6/15/2026

570.08K→557.40K

Common Stock

Direct

M · Option Exercise

+12.12K

Price / share

—

Trade value

—

% of position

2.2%

6/15/2026

557.40K→569.52K

Common Stock

Direct

F · Tax Withholding

−6.70K

Price / share

$10.25

Trade value

$68.72K

% of position

1.2%

6/15/2026

569.52K→562.82K

Common Stock

Direct

M · Option Exercise

+15.22K

Price / share

—

Trade value

—

% of position

2.7%

6/15/2026

562.82K→578.04K

Common Stock

Direct

F · Tax Withholding

−8.42K

Price / share

$10.25

Trade value

$86.27K

% of position

1.5%

6/15/2026

578.04K→569.62K

Common Stock

Direct

M · Option Exercise

+2.76K

Price / share

—

Trade value

—

% of position

0.5%

6/15/2026

569.62K→572.38K

Common Stock

Direct

F · Tax Withholding

−1.52K

Price / share

$10.25

Trade value

$15.63K

% of position

0.3%

6/15/2026

572.38K→570.85K

Common Stock

Direct

M · Option Exercise

+7.80K

Price / share

—

Trade value

—

% of position

1.4%

6/15/2026

570.85K→578.66K

Common Stock

Direct

F · Tax Withholding

−4.32K

Price / share

$10.25

Trade value

$44.23K

% of position

0.7%

6/15/2026

578.66K→574.34K

Total

Net shares

+27.18K

Net value

-$344.77K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	6/15/2026	M · Option Exercise	+22.92K	—	—	4.2%	547.16K	570.08K
Common Stock Direct	6/15/2026	F · Tax Withholding	−12.68K	$10.25	$129.92K	2.2%	570.08K	557.40K
Common Stock Direct	6/15/2026	M · Option Exercise	+12.12K	—	—	2.2%	557.40K	569.52K
Common Stock Direct	6/15/2026	F · Tax Withholding	−6.70K	$10.25	$68.72K	1.2%	569.52K	562.82K
Common Stock Direct	6/15/2026	M · Option Exercise	+15.22K	—	—	2.7%	562.82K	578.04K
Common Stock Direct	6/15/2026	F · Tax Withholding	−8.42K	$10.25	$86.27K	1.5%	578.04K	569.62K
Common Stock Direct	6/15/2026	M · Option Exercise	+2.76K	—	—	0.5%	569.62K	572.38K
Common Stock Direct	6/15/2026	F · Tax Withholding	−1.52K	$10.25	$15.63K	0.3%	572.38K	570.85K
Common Stock Direct	6/15/2026	M · Option Exercise	+7.80K	—	—	1.4%	570.85K	578.66K
Common Stock Direct	6/15/2026	F · Tax Withholding	−4.32K	$10.25	$44.23K	0.7%	578.66K	574.34K
Total			+27.18K		-$344.77K

Derivative Transactions6

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

22.92K shares

−22.92K

Strike price

Held after

229.16K

Exercisable

—

6/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

12.12K shares

−12.12K

Strike price

Held after

72.73K

Exercisable

—

6/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

15.22K shares

−15.22K

Strike price

Held after

152.19K

Exercisable

—

6/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.76K shares

−2.76K

Strike price

Held after

5.51K

Exercisable

—

6/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

7.80K shares

−7.80K

Strike price

Held after

46.81K

Exercisable

—

6/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

9.38K shares

−9.38K

Strike price

Held after

18.75K

Exercisable

—

6/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock22.92K shares	6/15/2026	M · Option Exercise	−22.92K	—	229.16K
Performance Stock Units Direct	Common Stock12.12K shares	6/15/2026	M · Option Exercise	−12.12K	—	72.73K
Restricted Stock Units Direct	Common Stock15.22K shares	6/15/2026	M · Option Exercise	−15.22K	—	152.19K
Performance Stock Units Direct	Common Stock2.76K shares	6/15/2026	M · Option Exercise	−2.76K	—	5.51K
Restricted Stock Units Direct	Common Stock7.80K shares	6/15/2026	M · Option Exercise	−7.80K	—	46.81K
Restricted Stock Units Direct	Common Stock9.38K shares	6/15/2026	M · Option Exercise	−9.38K	—	18.75K