Arthur J. Gallagher & (AJG) - 2023 Q2 - Quarterly Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) For the quarterly period ended June 30, 2023 or ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to Commission File Number: 1-09761 ARTHUR J. GALLAGHER & CO. (Exact name of registrant as specified in its charter) (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) ☒ Quarterly Report Pursuant to Se ...