Clarkston Capital Partners, LLC - 31 Dec 2025 SCHEDULE 13G/A Report for Affiliated Managers Group, Inc. Common Stock (AMG)

Filing Manager
Clarkston Capital Partners, LLC
Reporting Manager
Clarkston Capital Partners, LLC
Security
Affiliated Managers Group, Inc. Common Stock
Symbol
AMG
Shares outstanding
28,165,701 shares
Disclosed Ownership
904,119 shares
Ownership
3.2%
Form type
SCHEDULE 13G/A
Filing time
13 Feb 2026, 08:00:28 UTC
Date of event
31 Dec 2025
Previous filing
14 Feb 2025
SEC
View on sec.gov

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Clarkston Capital Partners, LLC 3.2% 904,119 452,500 394,049 /s/ Jeffrey A. Hakala Chief Executive Officer
Clarkston Companies, Inc. 3.2% 904,119 452,500 394,049 /s/ Jeffrey A. Hakala Chief Executive Officer and President
Modell Capital LLC 3.2% 904,119 452,500 394,049 /s/ Jeremy J. Modell Member
Jeffrey A. Hakala 3.2% 904,119 452,500 394,049 /s/ Jeffrey A. Hakala Jeffrey A. Hakala
Gerald W. Hakala 3.2% 904,119 452,500 394,049 /s/ Gerald W. Hakala Gerald W. Hakala
Jeremy J. Modell 3.2% 904,119 452,500 394,049 /s/ Jeremy J. Modell Jeremy J. Modell