GALLAGHER THOMAS JOSEPH (President) received a stock award from ARTHUR J. GALLAGHER & CO.

Compensation award — not an open‑market transaction. Less informative as a directional signal.

A · 1 award

GALLAGHER THOMAS JOSEPH

Filed: 3/17/2026ACC: 0000354190-26-000085

InsiderGALLAGHER THOMAS JOSEPHCIK 1589933

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· President

Since Mar 2026

+5.49K

Net shares

Net buyer

$845.9K

Total sold

Open market trades

0B · 0S

Total transactions

19.12K acquired · 13.63K disposed

Non-Derivative Transactions4

Common Stock (restricted)

Direct

A · Award

+9.56K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

0.00→9.56K

Common Stock (restricted)

Direct

M · Option Exercise

−9.56K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

9.56K→0.00

Common Stock

Direct

M · Option Exercise

+9.56K

Price / share

—

Trade value

—

% of position

3.0%

3/15/2026

318.69K→328.25K

Common Stock

Direct

F · Tax Withholding

−4.07K

Price / share

$207.93

Trade value

$845.86K

% of position

1.2%

3/15/2026

328.25K→324.18K

Total

Net shares

+5.49K

Net value

-$845.86K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock (restricted) Direct	3/15/2026	A · Award	+9.56K	—	—	New position	0.00	9.56K
Common Stock (restricted) Direct	3/15/2026	M · Option Exercise	−9.56K	—	—	New position	9.56K	0.00
Common Stock Direct	3/15/2026	M · Option Exercise	+9.56K	—	—	3.0%	318.69K	328.25K
Common Stock Direct	3/15/2026	F · Tax Withholding	−4.07K	$207.93	$845.86K	1.2%	328.25K	324.18K
Total			+5.49K		-$845.86K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)5

Common Stock

Indirect

Shares owned96.71K

Common Stock

Indirect

Shares owned119.17K

Common Stock

Indirect

Shares owned32.43K

Common Stock

Indirect

Shares owned491.14

Common Stock

Indirect

Shares owned62.30K

Total

311.10K indirect311.10K

Security Title	Shares Owned	Ownership Type
Common Stock	96.71K	Indirect
Common Stock	119.17K	Indirect
Common Stock	32.43K	Indirect
Common Stock	491.14	Indirect
Common Stock	62.30K	Indirect
Total	311.10K	311.10K indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

15.07K

Shares owned

15.07K

Exercise price

243.54

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

20.23K

Shares owned

20.23K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

32.90K

Shares owned

32.90K

Exercise price

127.90

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

11.45K

Shares owned

11.45K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

12.74K

Shares owned

12.74K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

31.34K

Shares owned

31.34K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

15.31K

Shares owned

15.31K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

14.88K

Shares owned

14.88K

Exercise price

337.74

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

22.22K

Shares owned

22.22K

Exercise price

228.20

Expiration

—

Exercise window

—

Total

Underlying

176.13K

Owned

176.13K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	15.07K	15.07K
Phantom Stock Direct	Common Stock		—	—	20.23K	20.23K
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	32.90K	32.90K
Notional Stock Units Direct	Common Stock	0	—	—	11.45K	11.45K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	12.74K	12.74K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	31.34K	31.34K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	15.31K	15.31K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	14.88K	14.88K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	22.22K	22.22K
Total					176.13K	176.13K