HUDSON SCOTT R (Vice President) exercised options at ARTHUR J. GALLAGHER & CO.

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

M · 1 exercise

HUDSON SCOTT R

Filed: 4/2/2026ACC: 0000354190-26-000120

InsiderHUDSON SCOTT RCIK 1482241

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· Vice President

Since Mar 2026

-63.65

Net shares

Net seller

$13.7K

Total sold

Open market trades

0B · 0S

Total transactions

63.65 acquired · 127.30 disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+63.65

Price / share

$215.95

Trade value

$13.75K

% of position

0.1%

3/31/2026

90.26K→90.33K

Common Stock

Direct

F · Tax Withholding

−63.65

Price / share

$215.95

Trade value

$13.75K

% of position

0.1%

3/31/2026

90.33K→90.26K

Total

Net shares

+0.00

Net value

$0.00

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/31/2026	M · Option Exercise	+63.65	$215.95	$13.75K	0.1%	90.26K	90.33K
Common Stock Direct	3/31/2026	F · Tax Withholding	−63.65	$215.95	$13.75K	0.1%	90.33K	90.26K
Total			+0.00		$0.00

Derivative Transactions1

Phantom Stock

Direct

M · Option Exercise

Converts to

Common Stock

63.65 shares

−63.65

Strike price

Held after

3.71K

Exercisable

—

3/31/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Phantom Stock Direct	Common Stock63.65 shares	3/31/2026	M · Option Exercise	−63.65		—	3.71K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned411.47

Total

411.47 indirect411.47

Security Title	Shares Owned	Ownership Type
Common Stock	411.47	Indirect
Total	411.47	411.47 indirect

Derivative Holdings (Post-Transaction)8

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

23.02K

Shares owned

23.02K

Exercise price

127.90

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

24.37K

Shares owned

24.37K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

10.05K

Shares owned

10.05K

Exercise price

243.54

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.56K

Shares owned

9.56K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.48K

Shares owned

11.48K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

15.80K

Shares owned

15.80K

Exercise price

228.20

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

10.58K

Shares owned

10.58K

Exercise price

337.74

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

4.13K

Shares owned

4.13K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

108.99K

Owned

108.99K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	23.02K	23.02K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	24.37K	24.37K
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	10.05K	10.05K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	9.56K	9.56K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	11.48K	11.48K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	15.80K	15.80K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	10.58K	10.58K
Notional Stock Units Direct	Common Stock		—	—	4.13K	4.13K
Total					108.99K	108.99K