MEAD CHRISTOPHER E (VICE 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

MEAD CHRISTOPHER E

Filed: 3/17/2026ACC: 0000354190-26-000091

InsiderMEAD CHRISTOPHER ECIK 1737644

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· VICE PRESIDENT

Since Mar 2026

+2.81K

Net shares

Net buyer

$509.6K

Total sold

Open market trades

0B · 0S

Total transactions

10.52K acquired · 7.71K disposed

Non-Derivative Transactions5

Common Stock (restricted)

Direct

A · Award

+5.26K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

0.00→5.26K

Common Stock (restricted)

Direct

M · Option Exercise

−5.26K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

5.26K→0.00

Common Stock

Direct

M · Option Exercise

+5.26K

Price / share

—

Trade value

—

% of position

27.2%

3/15/2026

19.31K→24.56K

Common Stock

Direct

F · Tax Withholding

−2.02K

Price / share

$207.93

Trade value

$419.81K

% of position

8.2%

3/15/2026

24.56K→22.54K

Common Stock

Direct

F · Tax Withholding

−432.00

Price / share

$207.93

Trade value

$89.83K

% of position

1.9%

3/16/2026

22.54K→22.11K

Total

Net shares

+2.81K

Net value

-$509.64K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock (restricted) Direct	3/15/2026	A · Award	+5.26K	—	—	New position	0.00	5.26K
Common Stock (restricted) Direct	3/15/2026	M · Option Exercise	−5.26K	—	—	New position	5.26K	0.00
Common Stock Direct	3/15/2026	M · Option Exercise	+5.26K	—	—	27.2%	19.31K	24.56K
Common Stock Direct	3/15/2026	F · Tax Withholding	−2.02K	$207.93	$419.81K	8.2%	24.56K	22.54K
Common Stock Direct	3/16/2026	F · Tax Withholding	−432.00	$207.93	$89.83K	1.9%	22.54K	22.11K
Total			+2.81K		-$509.64K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned491.10

Total

491.10 indirect491.10

Security Title	Shares Owned	Ownership Type
Common Stock	491.10	Indirect
Total	491.10	491.10 indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.72K

Shares owned

11.72K

Exercise price

127.90

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

1.98K

Shares owned

1.98K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

12.34K

Shares owned

12.34K

Exercise price

228.20

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.09K

Shares owned

11.09K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

8.26K

Shares owned

8.26K

Exercise price

337.74

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

8.42K

Shares owned

8.42K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

7.01K

Shares owned

7.01K

Exercise price

177.09

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

21.80K

Shares owned

21.80K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

7.37K

Shares owned

7.37K

Exercise price

243.54

Expiration

—

Exercise window

—

Total

Underlying

90.01K

Owned

90.01K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	11.72K	11.72K
Notional Stock Units Direct	Common Stock		—	—	1.98K	1.98K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	12.34K	12.34K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	11.09K	11.09K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	8.26K	8.26K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	8.42K	8.42K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	7.01K	7.01K
Phantom Stock Direct	Common Stock		—	—	21.80K	21.80K
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	7.37K	7.37K
Total					90.01K	90.01K