Director since 2012
Mr. Peiffer retired as president of MPLX GP LLC and as executive vice president, Corporate Planning and Investor and Government Relations of Marathon Petroleum Corporation in 2014. He is a member of the board of directors of the Fifth Third Bank (Northwestern Ohio). Mr. Peiffer is also a member of the boards of trustees of the Blanchard Valley Health System and the Findlay-Hancock County Community Foundation, and serves on the Blanchard Valley Port Authority Board.
Mr. Peiffer began his career with Marathon in 1974. During his career, he held a variety of management positions with increasing responsibilities. These responsibilities included supervisor of employee savings and retirement plans, controller of Speedway Petroleum Corporation and numerous other marketing and logistics positions. In 1987, Mr. Peiffer was appointed to the president's Commission on Executive Exchange serving for a year in the Pentagon as special assistant to the Assistant Secretary of Defense for Production and Logistics. In 1988, he returned to Marathon Oil and was named vice president of Finance and Administration for Emro Marketing Company. He served as assistant controller, Refining, Marketing and Transportation beginning in 1992. Mr. Peiffer was named senior vice president of Finance and Commercial Services for Marathon Ashland Petroleum1 in 1998, executive vice president of Marathon Petroleum Corporation in 2011 and president of MPLX GP LLC in 2012.
Mr. Peiffer graduated with a bachelor’s degree in accounting from Bowling Green State University in 1974 and passed the certified public accountant exam in Ohio that same year.
1 Name changed to Marathon Petroleum Company LLC, Sept. 1, 2005, and