The company officials said, with effect from August 1, Maryann T. Mannen will take over as CEO of Marathon Petroleum and join the board of directors. Mannen, who has been president of the company since January 1, will become Marathon’s first female CEO. Prior to that, she held the positions of EVP and CFO until 2021, when she was appointed as the company’s first female CFO.
Prior to joining the oil refiner in Findlay, Ohio, Mannen was the executive vice president and chief financial officer of TechnipFMC, a multinational engineering services and energy technology company that took over from FMC Technologies, Inc. Earlier, she joined FMC Technologies in 1986 and held the positions of EVP and CFO.
Maryann T. Mannen said, “I am honored by the trust placed in me to lead this great company. My priorities align with those that have made us the peer-leading energy investment we are today—an unwavering focus on safety, the environment and operational performance.”
With 13 refineries and a capacity to refine 3 million barrels of crude oil every calendar day, Marathon Petroleum runs the largest refining system in the country. The $21 billion sale of Speedway to 7-Eleven was completed by the company in 2021.
Co-managing partner of executive search firm Crist Kolder Associates, Scott W. Simmons, pointed out that certain industries, including the oil and gas sector, have historically been particularly dominated by men. According to the sources, women make up just under 14% of senior managers at energy corporations.
