GALLAGHER PATRICK MURPHY (Vice President) reported 2 transactions at ARTHUR J. GALLAGHER & CO.

Review the transaction codes below to understand the nature of each event.

GALLAGHER PATRICK MURPHY

Filed: 3/24/2026ACC: 0000354190-26-000106

InsiderGALLAGHER PATRICK MURPHYCIK 1929606

→

IssuerARTHUR J. GALLAGHER & CO.CIK 354190

Officer· Vice President

Since May 2022

+1.44K

Net shares

Net buyer

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

2.15K acquired · 704.00 disposed

Non-Derivative Transactions2

Common Stock

Direct

G · Gift

−704.00

Price / share

—

Trade value

—

% of position

4.8%

3/23/2026

14.78K→14.07K

Common Stock

Indirect

G · Gift

+704.00

Price / share

—

Trade value

—

% of position

6.7%

3/23/2026

10.56K→11.26K

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	3/23/2026	G · Gift	−704.00	—	—	4.8%	14.78K	14.07K
Common Stock Indirect	3/23/2026	G · Gift	+704.00	—	—	6.7%	10.56K	11.26K
Total			+0.00		$0.00

Derivative Transactions1

Notional Stock Units

Direct

I · I

Converts to

Common Stock

1.44K shares

+1.44K

Strike price

Held after

2.35K

Exercisable

—

3/20/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Notional Stock Units Direct	Common Stock1.44K shares	3/20/2026	I · I	+1.44K		—	2.35K

Non-Derivative Holdings (Post-Transaction)5

Common Stock

Indirect

Shares owned83.41K

Common Stock

Indirect

Shares owned491.14

Common Stock

Indirect

Shares owned77.06K

Common Stock

Indirect

Shares owned55.11K

Common Stock

Indirect

Shares owned21.03K

Total

237.10K indirect237.10K

Security Title	Shares Owned	Ownership Type
Common Stock	83.41K	Indirect
Common Stock	491.14	Indirect
Common Stock	77.06K	Indirect
Common Stock	55.11K	Indirect
Common Stock	21.03K	Indirect
Total	237.10K	237.10K indirect

Derivative Holdings (Post-Transaction)9

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.39K

Shares owned

11.39K

Exercise price

243.54

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

7.25K

Shares owned

7.25K

Exercise price

127.90

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

17.77K

Shares owned

17.77K

Exercise price

228.20

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

11.90K

Shares owned

11.90K

Exercise price

337.74

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

6.27K

Shares owned

6.27K

Exercise price

86.17

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

5.51K

Shares owned

5.51K

Exercise price

158.56

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

3.80K

Shares owned

3.80K

Exercise price

Expiration

—

Exercise window

—

Non-qualified Stock Option

Direct

Underlying security

Common Stock

Underlying shares

6.16K

Shares owned

6.16K

Exercise price

177.09

Expiration

—

Exercise window

—

Phantom Stock

Direct

Underlying security

Common Stock

Underlying shares

17.66K

Shares owned

17.66K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

87.72K

Owned

87.72K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Non-qualified Stock Option Direct	Common Stock	243.54	—	—	11.39K	11.39K
Non-qualified Stock Option Direct	Common Stock	127.90	—	—	7.25K	7.25K
Non-qualified Stock Option Direct	Common Stock	228.20	—	—	17.77K	17.77K
Non-qualified Stock Option Direct	Common Stock	337.74	—	—	11.90K	11.90K
Non-qualified Stock Option Direct	Common Stock	86.17	—	—	6.27K	6.27K
Non-qualified Stock Option Direct	Common Stock	158.56	—	—	5.51K	5.51K
Phantom Stock Direct	Common Stock		—	—	3.80K	3.80K
Non-qualified Stock Option Direct	Common Stock	177.09	—	—	6.16K	6.16K
Phantom Stock Direct	Common Stock		—	—	17.66K	17.66K
Total					87.72K	87.72K