MOUGIS STEVEN JOHN (Global Chief Comm. Officer) exercised options at DOUBLEVERIFY HOLDINGS, INC.

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

M · 8 exercises

MOUGIS STEVEN JOHN

Filed: 3/16/2026ACC: 0001819928-26-000033

InsiderMOUGIS STEVEN JOHNCIK 2104368

→

IssuerDOUBLEVERIFY HOLDINGS, INC.CIK 1819928

Officer· Global Chief Comm. Officer

Since Mar 2026

+95.28K

Net shares

Net buyer

$175.8K

Total sold

Open market trades

0B · 0S

Total transactions

160.25K acquired · 64.97K disposed

Non-Derivative Transactions16

Common Stock

Direct

M · Option Exercise

+9.38K

Price / share

—

Trade value

—

% of position

26.0%

3/15/2026

36.06K→45.44K

Common Stock

Direct

F · Tax Withholding

−3.38K

Price / share

$10.21

Trade value

$34.52K

% of position

7.4%

3/15/2026

45.44K→42.06K

Common Stock

Direct

M · Option Exercise

+4.21K

Price / share

—

Trade value

—

% of position

10.0%

3/15/2026

42.06K→46.27K

Common Stock

Direct

F · Tax Withholding

−1.52K

Price / share

$10.21

Trade value

$15.51K

% of position

3.3%

3/15/2026

46.27K→44.75K

Common Stock

Direct

M · Option Exercise

+3.17K

Price / share

—

Trade value

—

% of position

7.1%

3/15/2026

44.75K→47.92K

Common Stock

Direct

F · Tax Withholding

−1.14K

Price / share

$10.21

Trade value

$11.68K

% of position

2.4%

3/15/2026

47.92K→46.77K

Common Stock

Direct

M · Option Exercise

+27.06K

Price / share

—

Trade value

—

% of position

57.8%

3/15/2026

46.77K→73.83K

Common Stock

Direct

F · Tax Withholding

−9.75K

Price / share

$10.21

Trade value

$99.59K

% of position

13.2%

3/15/2026

73.83K→64.08K

Common Stock

Direct

M · Option Exercise

+2.13K

Price / share

—

Trade value

—

% of position

3.3%

3/15/2026

64.08K→66.20K

Common Stock

Direct

F · Tax Withholding

−767.00

Price / share

$10.21

Trade value

$7.83K

% of position

1.2%

3/15/2026

66.20K→65.44K

Common Stock

Direct

M · Option Exercise

+250.00

Price / share

—

Trade value

—

% of position

0.4%

3/15/2026

65.44K→65.69K

Common Stock

Direct

F · Tax Withholding

−91.00

Price / share

$10.21

Trade value

$929.11

% of position

0.1%

3/15/2026

65.69K→65.59K

Common Stock

Direct

M · Option Exercise

+1.14K

Price / share

—

Trade value

—

% of position

1.7%

3/15/2026

65.59K→66.74K

Common Stock

Direct

F · Tax Withholding

−413.00

Price / share

$10.21

Trade value

$4.22K

% of position

0.6%

3/15/2026

66.74K→66.32K

Common Stock

Direct

M · Option Exercise

+418.00

Price / share

—

Trade value

—

% of position

0.6%

3/15/2026

66.32K→66.74K

Common Stock

Direct

F · Tax Withholding

−151.00

Price / share

$10.21

Trade value

$1.54K

% of position

0.2%

3/15/2026

66.74K→66.59K

Total

Net shares

+30.53K

Net value

-$175.82K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/15/2026	M · Option Exercise	+9.38K	—	—	26.0%	36.06K	45.44K
Common Stock Direct	3/15/2026	F · Tax Withholding	−3.38K	$10.21	$34.52K	7.4%	45.44K	42.06K
Common Stock Direct	3/15/2026	M · Option Exercise	+4.21K	—	—	10.0%	42.06K	46.27K
Common Stock Direct	3/15/2026	F · Tax Withholding	−1.52K	$10.21	$15.51K	3.3%	46.27K	44.75K
Common Stock Direct	3/15/2026	M · Option Exercise	+3.17K	—	—	7.1%	44.75K	47.92K
Common Stock Direct	3/15/2026	F · Tax Withholding	−1.14K	$10.21	$11.68K	2.4%	47.92K	46.77K
Common Stock Direct	3/15/2026	M · Option Exercise	+27.06K	—	—	57.8%	46.77K	73.83K
Common Stock Direct	3/15/2026	F · Tax Withholding	−9.75K	$10.21	$99.59K	13.2%	73.83K	64.08K
Common Stock Direct	3/15/2026	M · Option Exercise	+2.13K	—	—	3.3%	64.08K	66.20K
Common Stock Direct	3/15/2026	F · Tax Withholding	−767.00	$10.21	$7.83K	1.2%	66.20K	65.44K
Common Stock Direct	3/15/2026	M · Option Exercise	+250.00	—	—	0.4%	65.44K	65.69K
Common Stock Direct	3/15/2026	F · Tax Withholding	−91.00	$10.21	$929.11	0.1%	65.69K	65.59K
Common Stock Direct	3/15/2026	M · Option Exercise	+1.14K	—	—	1.7%	65.59K	66.74K
Common Stock Direct	3/15/2026	F · Tax Withholding	−413.00	$10.21	$4.22K	0.6%	66.74K	66.32K
Common Stock Direct	3/15/2026	M · Option Exercise	+418.00	—	—	0.6%	66.32K	66.74K
Common Stock Direct	3/15/2026	F · Tax Withholding	−151.00	$10.21	$1.54K	0.2%	66.74K	66.59K
Total			+30.53K		-$175.82K

Derivative Transactions9

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

112.50K shares

+112.50K

Strike price

Held after

112.50K

Exercisable

—

3/12/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

9.38K shares

−9.38K

Strike price

Held after

103.12K

Exercisable

—

3/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

4.21K shares

−4.21K

Strike price

Held after

5.89K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

3.17K shares

−3.17K

Strike price

Held after

38.05K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

27.06K shares

−27.06K

Strike price

Held after

108.22K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.13K shares

−2.13K

Strike price

Held after

17K

Exercisable

—

3/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

250.00 shares

−250.00

Strike price

Held after

752.00

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.14K shares

−1.14K

Strike price

Held after

4.57K

Exercisable

—

3/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

418.00 shares

−418.00

Strike price

Held after

0.00

Exercisable

—

3/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock112.50K shares	3/12/2026	A · Award	+112.50K	—	112.50K
Restricted Stock Units Direct	Common Stock9.38K shares	3/15/2026	M · Option Exercise	−9.38K	—	103.12K
Performance Stock Units Direct	Common Stock4.21K shares	3/15/2026	M · Option Exercise	−4.21K	—	5.89K
Restricted Stock Units Direct	Common Stock3.17K shares	3/15/2026	M · Option Exercise	−3.17K	—	38.05K
Restricted Stock Units Direct	Common Stock27.06K shares	3/15/2026	M · Option Exercise	−27.06K	—	108.22K
Restricted Stock Units Direct	Common Stock2.13K shares	3/15/2026	M · Option Exercise	−2.13K	—	17K
Performance Stock Units Direct	Common Stock250.00 shares	3/15/2026	M · Option Exercise	−250.00	—	752.00
Restricted Stock Units Direct	Common Stock1.14K shares	3/15/2026	M · Option Exercise	−1.14K	—	4.57K
Restricted Stock Units Direct	Common Stock418.00 shares	3/15/2026	M · Option Exercise	−418.00	—	0.00