Jonathan Mariner

by LP Green, II
Jonathan Mariner
Jonathan Mariner
Retired Chief Investment Officer
Major League Baseball
Boards: McGraw-Hill Education, The Investors Exchange, Ultimate Software, Inc.

Jonathan Mariner served as Chief Investment Officer (CIO) for Major League Baseball (MLB). In this role, Mariner oversaw approximately $2 billion in combined league-wide pension assets and MLB’s strategic investment fund. He also served as President of BASES, the league’s captive insurance company. BASES provides property and casualty insurance coverage to all 30 MLB teams and ballparks.

 

Before serving as CIO, Jonathan spent more than 12 years as Executive Vice President and chief financial officer (CFO) of MLB. His responsibilities included overseeing MLB’s treasury, budgeting, league- and team-related financial reporting, and risk management activities.

 

Mariner is active on a number of charitable, foundation, and advisory boards, including the University of Virginia’s Darden Graduate Business School Board of Trustees and Little League Baseball’s Board of Directors.

 

Mariner graduated from the University of Virginia with a Bachelor’s degree in Accounting and received his MBA from Harvard Business School.

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