Molly R. Benson

Chief Legal Officer and Corporate Secretary

Ms. Benson is chief legal officer and corporate secretary of MPLX GP LLC. She is also chief legal officer and corporate secretary of Marathon Petroleum Corporation.

Ms. Benson began her career with Marathon as a tax attorney in 1998.She was named Government Affairs manager in 2001 and joined the Law organization as an operations attorney in 2003. Ms. Benson was promoted to senior attorney, downstream business in 2006 and to group counsel, North American production for Marathon Oil Company in Houston in 2010. Ms. Benson was named Marathon Petroleum Corporation group counsel, Law ‐ Corporate and Finance in 2011 and assistant general counsel, Law ‐ Corporate and Finance in 2012. In 2016, she was appointed as vice president, chief securities, governance & compliance officer and corporate secretary. She assumed her current position in 2024.

Ms. Benson graduated from The Ohio State University in 1987 with a bachelor’s degree in political science and a Juris Doctor degree from the University of Toledo College of Law in 1997. She completed the Executive Development Program at Northwestern University’s Kellogg School of Management in 2014.

Ms. Benson currently serves on the board of counselors for the University of Findlay and the board of directors for the Hancock Properties Foundation.