Arthur J. Gallagher & Co. — Director's Dealing 2025

Feb 28, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Arthur J. Gallagher & Co. (AJG)
CIK: 0000354190
Period of Report: 2025-02-27

Reporting Person: Gallagher Patrick Murphy (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-27	Common Stock	M	5250	$70.74	Acquired	45557.8567	Direct
2025-02-27	Common Stock	S	2613	$332.518	Disposed	42944.8567	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-02-27	Non-qualified Stock Option	$70.74	M	5250	Disposed	2025-03-15	Common Stock (5250)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	10120	Indirect
Common Stock	367.549	Indirect
Common Stock	7964	Indirect
Common Stock	80891	Indirect
Common Stock	20032	Indirect
Common Stock	54859	Indirect

Footnotes

F1: The price reported is an average weighted price. The shares were sold in multiple transactions at prices ranging from $332.476 to $332.555. The reporting person will provide to the Securities and Exchange Commission staff, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

F2: Shares held in trusts, for the benefit of the reporting person's children, of which his wife is sole trustee.

F3: Shares held in revocable trust of which the reporting person's spouse is sole Trustee and as to which he disclaims beneficial ownership.

F4: Shares held in trust for the benefit of the reporting person's children, of which he is a trustee.

F5: Shares held in trust for the benefit of the reporting person's children, of which he is a trustee.

F6: Grant date of 3/15/2018.

F7: One-third of this stock option becomes exerciseable on each of the 3rd, 4th, and 5th anniversaries of the grant date.