Form 4 Filing for ANNETTE FRANQUI

On June 1, 2026, ANNETTE FRANQUI acquired 750 shares of Common Stock in AFFILIATED MANAGERS GROUP, INC. (AMG) through open market purchases, with a weighted average price of $304.88 per share. The individual transaction prices ranged from $303.00 to $305.00. Following this transaction, Ms. FRANQUI directly owns 1962 shares of Common Stock. The filing was signed by Kavita Padiyar, Attorney-in-Fact, on June 3, 2026. This transaction is classified as an open market purchase of securities by a director.