About
G. Staley Cates joined the Affiliated Managers Group Board of Directors as an independent director in April 2026 and serves on the Audit Committee, where he qualifies as an audit committee financial expert.
He spent nearly four decades at Southeastern Asset Management, Inc., an independent global investment management firm he joined in 1986, serving as President from 1989 through 2015 and as Vice Chairman from 2015 through 2024, and acting as Co-Portfolio Manager for the Longleaf Partners family of mutual and UCITS funds from 1989 through 2024. He received a B.B.A. from the University of Texas at Austin and is a Chartered Financial Analyst.
Roles
Affiliated Managers Group, Inc.
Independent Director · Current role
2026–present
Southeastern Asset Management, Inc.
Vice Chairman · Independent global investment management firm; joined in 1986.
2015–2024
Southeastern Asset Management, Inc.
President
1989–2015
Longleaf Partners family of mutual and UCITS funds
Co-Portfolio Manager
1989–2024
Southeastern Asset Management
Vice Chairman · An independent global investment management firm.
2015-2024
Southeastern Asset Management
President · Joined the firm in 1986.
1989-2015
External Roles
Poplar Foundation
Chairman
—
New Hope Christian Academy
Co-Founder
—
Also at Affiliated Managers Group, Inc.
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