PIETRUCHA SUSAN E (Chief Human Resources Officer) 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

PIETRUCHA SUSAN E

Filed: 3/17/2026ACC: 0000354190-26-000092

InsiderPIETRUCHA SUSAN ECIK 1386997

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IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· Chief Human Resources Officer

Since Mar 2026

+4.43K

Net shares

Net buyer

$454.5K

Total sold

Open market trades

0B · 0S

Total transactions

13.22K acquired · 8.80K disposed

Non-Derivative Transactions4

Common Stock (restricted)

Direct

A · Award

+6.61K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

0.00→6.61K

Common Stock (restricted)

Direct

M · Option Exercise

−6.61K

Price / share

—

Trade value

—

% of position

New position

3/15/2026

6.61K→0.00

Common Stock

Direct

M · Option Exercise

+6.61K

Price / share

—

Trade value

—

% of position

55.2%

3/15/2026

11.97K→18.58K

Common Stock

Direct

F · Tax Withholding

−2.19K

Price / share

$207.93

Trade value

$454.53K

% of position

11.8%

3/15/2026

18.58K→16.40K

Total

Net shares

+4.43K

Net value

-$454.53K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock (restricted) Direct	3/15/2026	A · Award	+6.61K	—	—	New position	0.00	6.61K
Common Stock (restricted) Direct	3/15/2026	M · Option Exercise	−6.61K	—	—	New position	6.61K	0.00
Common Stock Direct	3/15/2026	M · Option Exercise	+6.61K	—	—	55.2%	11.97K	18.58K
Common Stock Direct	3/15/2026	F · Tax Withholding	−2.19K	$207.93	$454.53K	11.8%	18.58K	16.40K
Total			+4.43K		-$454.53K

Derivative Transactions0

No derivative transactions reported

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned367.31

Total

367.31 indirect367.31

Security Title	Shares Owned	Ownership Type
Common Stock	367.31	Indirect
Total	367.31	367.31 indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

21.21K

Shares owned

21.21K

Exercise price

127.90

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

100.64K

Shares owned

100.64K

Exercise price

Expiration

—

Exercise window

—

Notional Stock Units

Direct

Underlying security

Common Stock

Underlying shares

15.32K

Shares owned

15.32K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

10.03K

Shares owned

10.03K

Exercise price

337.74

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

8.81K

Shares owned

8.81K

Exercise price

177.09

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.88K

Shares owned

9.88K

Exercise price

158.56

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

15.02K

Shares owned

15.02K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

9.21K

Shares owned

9.21K

Exercise price

243.54

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

14.98K

Shares owned

14.98K

Exercise price

228.20

Expiration

—

Exercise window

—

Total

Underlying

205.10K

Owned

205.10K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	21.21K	21.21K
Phantom Stock Direct	Common Stock		—	—	100.64K	100.64K
Notional Stock Units Direct	Common Stock	0	—	—	15.32K	15.32K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	10.03K	10.03K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	8.81K	8.81K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	9.88K	9.88K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	15.02K	15.02K
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	9.21K	9.21K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	14.98K	14.98K
Total					205.10K	205.10K