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 · 7 exercises

MOUGIS STEVEN JOHN

Filed: 9/17/2026ACC: 0001819928-26-000097

InsiderMOUGIS STEVEN JOHNCIK 2104368

→

IssuerDOUBLEVERIFY HOLDINGS, INC.CIK 1819928

Officer· Global Chief Comm. Officer

Since Mar 2026

-22.45K

Net shares

Net seller

$303.0K

Total sold

Open market trades

0B · 0S

Total transactions

43.96K acquired · 66.41K disposed

Non-Derivative Transactions14

Common Stock

Direct

M · Option Exercise

+9.38K

Price / share

—

Trade value

—

% of position

9.9%

9/15/2026

95.16K→104.54K

Common Stock

Direct

F · Tax Withholding

−4.79K

Price / share

$13.50

Trade value

$64.62K

% of position

4.6%

9/15/2026

104.54K→99.75K

Common Stock

Direct

M · Option Exercise

+841.00

Price / share

—

Trade value

—

% of position

0.8%

9/15/2026

99.75K→100.59K

Common Stock

Direct

F · Tax Withholding

−430.00

Price / share

$13.50

Trade value

$5.80K

% of position

0.4%

9/15/2026

100.59K→100.16K

Common Stock

Direct

M · Option Exercise

+3.17K

Price / share

—

Trade value

—

% of position

3.2%

9/15/2026

100.16K→103.33K

Common Stock

Direct

F · Tax Withholding

−1.62K

Price / share

$13.50

Trade value

$21.86K

% of position

1.6%

9/15/2026

103.33K→101.71K

Common Stock

Direct

M · Option Exercise

+27.06K

Price / share

—

Trade value

—

% of position

26.6%

9/15/2026

101.71K→128.77K

Common Stock

Direct

F · Tax Withholding

−13.81K

Price / share

$13.50

Trade value

$186.48K

% of position

10.7%

9/15/2026

128.77K→114.95K

Common Stock

Direct

M · Option Exercise

+251.00

Price / share

—

Trade value

—

% of position

0.2%

9/15/2026

114.95K→115.21K

Common Stock

Direct

F · Tax Withholding

−129.00

Price / share

$13.50

Trade value

$1.74K

% of position

0.1%

9/15/2026

115.21K→115.08K

Common Stock

Direct

M · Option Exercise

+2.13K

Price / share

—

Trade value

—

% of position

1.8%

9/15/2026

115.08K→117.20K

Common Stock

Direct

F · Tax Withholding

−1.08K

Price / share

$13.50

Trade value

$14.65K

% of position

0.9%

9/15/2026

117.20K→116.12K

Common Stock

Direct

M · Option Exercise

+1.14K

Price / share

—

Trade value

—

% of position

1.0%

9/15/2026

116.12K→117.26K

Common Stock

Direct

F · Tax Withholding

−584.00

Price / share

$13.50

Trade value

$7.88K

% of position

0.5%

9/15/2026

117.26K→116.68K

Total

Net shares

+21.52K

Net value

-$303.03K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	9/15/2026	M · Option Exercise	+9.38K	—	—	9.9%	95.16K	104.54K
Common Stock Direct	9/15/2026	F · Tax Withholding	−4.79K	$13.50	$64.62K	4.6%	104.54K	99.75K
Common Stock Direct	9/15/2026	M · Option Exercise	+841.00	—	—	0.8%	99.75K	100.59K
Common Stock Direct	9/15/2026	F · Tax Withholding	−430.00	$13.50	$5.80K	0.4%	100.59K	100.16K
Common Stock Direct	9/15/2026	M · Option Exercise	+3.17K	—	—	3.2%	100.16K	103.33K
Common Stock Direct	9/15/2026	F · Tax Withholding	−1.62K	$13.50	$21.86K	1.6%	103.33K	101.71K
Common Stock Direct	9/15/2026	M · Option Exercise	+27.06K	—	—	26.6%	101.71K	128.77K
Common Stock Direct	9/15/2026	F · Tax Withholding	−13.81K	$13.50	$186.48K	10.7%	128.77K	114.95K
Common Stock Direct	9/15/2026	M · Option Exercise	+251.00	—	—	0.2%	114.95K	115.21K
Common Stock Direct	9/15/2026	F · Tax Withholding	−129.00	$13.50	$1.74K	0.1%	115.21K	115.08K
Common Stock Direct	9/15/2026	M · Option Exercise	+2.13K	—	—	1.8%	115.08K	117.20K
Common Stock Direct	9/15/2026	F · Tax Withholding	−1.08K	$13.50	$14.65K	0.9%	117.20K	116.12K
Common Stock Direct	9/15/2026	M · Option Exercise	+1.14K	—	—	1.0%	116.12K	117.26K
Common Stock Direct	9/15/2026	F · Tax Withholding	−584.00	$13.50	$7.88K	0.5%	117.26K	116.68K
Total			+21.52K		-$303.03K

Derivative Transactions7

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

9.38K shares

−9.38K

Strike price

Held after

84.37K

Exercisable

—

9/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

841.00 shares

−841.00

Strike price

Held after

4.21K

Exercisable

—

9/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

3.17K shares

−3.17K

Strike price

Held after

31.70K

Exercisable

—

9/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

27.06K shares

−27.06K

Strike price

Held after

54.11K

Exercisable

—

9/15/2026

Performance Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

251.00 shares

−251.00

Strike price

Held after

251.00

Exercisable

—

9/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

2.13K shares

−2.13K

Strike price

Held after

12.75K

Exercisable

—

9/15/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

1.14K shares

−1.14K

Strike price

Held after

2.29K

Exercisable

—

9/15/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
Restricted Stock Units Direct	Common Stock9.38K shares	9/15/2026	M · Option Exercise	−9.38K	—	84.37K
Performance Stock Units Direct	Common Stock841.00 shares	9/15/2026	M · Option Exercise	−841.00	—	4.21K
Restricted Stock Units Direct	Common Stock3.17K shares	9/15/2026	M · Option Exercise	−3.17K	—	31.70K
Restricted Stock Units Direct	Common Stock27.06K shares	9/15/2026	M · Option Exercise	−27.06K	—	54.11K
Performance Stock Units Direct	Common Stock251.00 shares	9/15/2026	M · Option Exercise	−251.00	—	251.00
Restricted Stock Units Direct	Common Stock2.13K shares	9/15/2026	M · Option Exercise	−2.13K	—	12.75K
Restricted Stock Units Direct	Common Stock1.14K shares	9/15/2026	M · Option Exercise	−1.14K	—	2.29K