Arthur J. Gallagher & (AJG) - 2024 Q1 - Quarterly Results

Exhibit 99.1 NEWS RELEASE ARTHUR J. GALLAGHER & CO. ANNOUNCES FIRST QUARTER 2024 FINANCIAL RESULTS ROLLING MEADOWS, IL, April 25, 2024 — Arthur J. Gallagher & Co. (NYSE: AJG) today reported its financial results for the quarter ended March 31, 2024. Management will host a webcast conference call to discuss these results on Thursday, April 25, 2024 at 5:15 p.m. ET/4:15 p.m. CT. To listen to the call, and for printer-friendly formats of this release and the “CFO Commentary” and “Supplemental Quarterly Data,” ...