Jonathan D. Mariner

by LP Green, II

Executive Vice President and Chief Financial Officer
Major League Baseball (MLB)

Jonathan D. Mariner is Executive Vice President and Chief Financial Officer of Major League Baseball in the Office of the Commissioner. In this role, Mariner is responsible for overseeing the Major League Baseball’s central office budgeting, financial reporting, treasury, and risk management activities, Mr. Mariner’s duties include overseeing all Club-level financial reporting through the team CFO’s; administering MLB’s $1.5 billion league-wide credit facility; and providing updates at Owners’ Meetings on the industry’s financial health. Mr. Mariner previously served as Executive Vice President and Chief Financial Officer for the Florida Marlins Baseball Club, initially under the ownership of Wayne Huizenga and, following a sale in 1999, under then-owner John W. Henry (now the Principal Owner of the Boston Red Sox).

Mariner currently serves on the board of directors of FM Global Insurance Company; and Technology Frontiers. He also serves on a number of charitable, foundation and advisory boards, including the University of Virginia’s McIntire School of Commerce Foundation; and Little League Baseball.

Mariner holds a Bachelor of Science degree in Accounting from the University of Virginia and a MBA degree from the Harvard Business School.

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