Jonathan Mariner

Jonathan Mariner was appointed chief investment officer of Major League Baseball in 2014, where he manages the industry's Baseball Endowment fund, its pension assets, and potential new strategic investments.

Previously, Mariner served as MLB's chief financial officer. He upgraded MLB's financial function, created a league-wide risk management program to insure all property and casualty risks across the league through a new captive insurance company, improved the budgeting and financial reporting of MLB's central offices, and implemented an improved club financial reporting and long range forecasting process.

Before joining MLB, Mariner served as executive vice president and CFO of the Florida Marlins.