Marathon Petroleum names Maryann Mannen President, John Quaid CFO

Marathon Petroleum (MPC) President and CEO Michael Hennigan announced changes to the executive management team of MPC, effective January 1, 2024. Maryann Mannen, Executive VP and CFO of MPC, has been appointed president of MPC. Hennigan will continue to serve as MPC’s CEO, as well as the chairman, president and CEO of the general partner of MPLX (MPLX). As MPC president, Mannen will have oversight responsibility for the nation’s largest refining business, commercial performance, and the health, environment, safety and security function. She also will continue to serve as a member of the board of directors of the general partner of MPLX. Prior to joining MPC in 2021, Mannen had a 35-year career in the energy sector, holding positions of increasing responsibility at TechnipFMC and predecessor companies, including executive vice president and chief financial officer. Succeeding Mannen, John Quaid, EVP and CFO of the general partner of MPLX, has been appointed EVP and CFO of MPC. He also will continue to serve as a member of the board of directors of the general partner of MPLX. Quaid joined MPC in 2014 as vice president and controller and became EVP and CFO of the general partner of MPLX in 2021.