Maryann Mannen was named the CEO of Marathon Petroleum Corporation in 2024. She joined the company in 2021 as Executive Vice President & Chief Financial Officer, followed by the role of President from January to August 2024. Prior to MPC, Ms. Mannen served as EVP & Chief Financial Officer at TechnipFMC, and before that as Vice President of Administration, VP Treasurer, and Senior Vice President & Chief Financial Officer at FMV Technologies.