JAIN VISHAL (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

JAIN VISHAL

Filed: 3/10/2026ACC: 0000354190-26-000066

InsiderJAIN VISHALCIK 1812516

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· VICE PRESIDENT

Since May 2020

-4.33K

Net shares

Net seller

$948.2K

Total sold

Open market trades

0B · 0S

Total transactions

8.45K acquired · 12.78K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+8.45K

Price / share

$79.59

Trade value

$672.54K

% of position

14.4%

3/9/2026

58.86K→67.31K

Common Stock

Direct

F · Tax Withholding

−4.33K

Price / share

$219.19

Trade value

$948.24K

% of position

6.4%

3/9/2026

67.31K→62.99K

Total

Net shares

+4.12K

Net value

-$275.70K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/9/2026	M · Option Exercise	+8.45K	$79.59	$672.54K	14.4%	58.86K	67.31K
Common Stock Direct	3/9/2026	F · Tax Withholding	−4.33K	$219.19	$948.24K	6.4%	67.31K	62.99K
Total			+4.12K		-$275.70K

Derivative Transactions1

Non-qualified Stock Option

Direct

M · Option Exercise

Converts to

Common Stock

8.45K shares

−8.45K

Strike price

79.59

Held after

0.00

Exercisable

—

3/9/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Non-qualified Stock Option Direct	Common Stock8.45K shares	3/9/2026	M · Option Exercise	−8.45K	79.59	—	0.00

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned491.11

Total

491.11 indirect491.11

Security Title	Shares Owned	Ownership Type
Common Stock	491.11	Indirect
Total	491.11	491.11 indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

8.28K

Shares owned

8.28K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

8.71K

Shares owned

8.71K

Exercise price

243.54

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

13.58K

Shares owned

13.58K

Exercise price

127.90

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.95K

Shares owned

9.95K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

10.45K

Shares owned

10.45K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.59K

Shares owned

9.59K

Exercise price

337.74

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

5.50K

Shares owned

5.50K

Exercise price

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

39.51K

Shares owned

39.51K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

14.32K

Shares owned

14.32K

Exercise price

228.20

Expiration

—

Exercise window

—

Total

Underlying

119.88K

Owned

119.88K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	8.28K	8.28K
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	8.71K	8.71K
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	13.58K	13.58K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	9.95K	9.95K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	10.45K	10.45K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	9.59K	9.59K
Notional Stock Units Direct	Common Stock	0	—	—	5.50K	5.50K
Phantom Stock Direct	Common Stock		—	—	39.51K	39.51K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	14.32K	14.32K
Total					119.88K	119.88K