Arthur J. Gallagher & Co. (AJG) — Form SCHEDULE 13G: Ownership over 5% (passive)

Capital World Investors filed a Schedule 13G reporting ownership of 13,024,896 shares of Arthur J. Gallagher & Co. common stock. This represents 5.1% of the company's outstanding shares as of September 30, 2026. The filing indicates the shares are held in the ordinary course of business without the purpose of changing or influencing control.