Tranche Update on Affiliated Managers Group, Inc.'s Equity Buyback Plan announced on November 7, 2022.

Affiliated Managers Group, Inc. is a global independent investment management company. The Company is focused on investing in a range of partner-owned investment firms, known as Affiliates. Its Affiliates provide a diverse range of differentiated investment strategies designed to assist institutional and wealth clients worldwide in achieving their investment objectives. Its Affiliates also provide investment management and customized investment counseling and fiduciary services to high-net worth individuals and families and institutional clients. Its Affiliates distribute their investment services and products to institutional and wealth clients through direct sales and relationships with consultants and intermediaries around the world through their own business development capabilities. Its Affiliates manage assets for investors in more than 50 countries. It manages its assets across a range of private markets, liquid alternative and differentiated long-only investment strategies.