144Filing Date: Sep 15, 2026

Arthur J. Gallagher & (AJG)

Insider Proposed Sale Notice

CARY RICHARD C

Officer·Arthur J. Gallagher &

Proposed

CommonNYSE

Shares1.00K

Est. DateSep 15

Market Value$252.9K

BrokerFidelity Brokerage Services LLC

AcquisitionCompensation · Issuer

Acquired DateNov 5, 2024

Amount Acquired1.00K

% Outstanding0.0004%

Exercise / Payment Details

Paid: Nov 5, 2024Method: Compensation

No sales in the past 3 months

Signature & Compliance expand_more

Notice DateSep 15, 2026

Signature /s/ Joshua Schmitt, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Richard C. Cary.

Issuer Info expand_more

CompanyArthur J. Gallagher & Co.

CIK0000354190

SEC File No.001-09761

Phone630-773-3800

Address2850 GOLF ROAD, ROLLING MEADOWS, IL 60008-4050