Marathon Petroleum names Maria Khoury as CFO

Khoury will join the Ohio-based company early next year, succeeding John J. Quaid, who has served at Marathon Petroleum since 2014.

Dec. 18, 2025

Marathon Petroleum Corp. has selected Maria A. Khoury to join the company as executive vice-president and chief financial officer, effective Jan. 19, 2026. Khoury will succeed John J. Quaid, who will remain with the company for a period of transition.

Since 2021, Khoury has served as vice-president, group CFO biotechnology for Danaher, a global science and technology company. From 2017-2020, Khoury served as vice-president, finance and IT for GE Healthcare Life Sciences, based in the UK.

Prior, Khoury served in financial leadership positions for GE Oil & Gas in the US and Italy from 2010 to 2017, including as CFO of GE's drilling and surface division. From 1999 to 2010, she held positions in financial planning and analysis and treasury for GE Corporate and GE Capital Treasury. Before joining GE in 1999, Khoury spent 5 years with Cargill Inc., where she began her finance career.

Quaid joined Marathon Petroleum in 2014 as senior vice-president and controller of. He was named executive vice president and chief financial officer of MPLX GP LLC in 2021 and assumed the role of executive vice-president and chief financial officer in 2024.