Gary R. Heminger retired in March 2020 as chairman of the board and CEO of Marathon Petroleum Corporation and MPLX GP LLC. He joined Marathon in 1975, and his more than 40 years with the company include experience in a variety of groups and functions. In addition to five years in various financial and administrative roles, he spent three years overseas in London as audit supervisor of the Brae Project. He worked with Emro Marketing, the predecessor of Speedway, for eight years in several marketing and commercial roles. In 1991, Mr. Heminger was named vice president of Emro Marketing's Western Division.
From 1995-96, he served as president of Marathon Pipe Line Company. He assumed the position of manager for business development and joint interest of Marathon Oil Company in 1996. Mr. Heminger was named vice president of business development for Marathon Ashland Petroleum upon its formation in 1998, and was named senior vice president for business development in 1999. In 2001, he was named executive vice president of supply, transportation and marketing.
Mr. Heminger was appointed president of Marathon Petroleum Company LLC, a wholly owned subsidiary of Marathon, in 2001. In addition, he was named executive vice president of downstream for Marathon Oil Corporation and served as a member of Marathon’s Executive Committee. He was named president and CEO of Marathon Petroleum Corporation on July 1, 2011, and chairman of the board in 2016.
Mr. Heminger earned a bachelor's degree in accounting from Tiffin University in 1976, while already employed by Marathon Oil Company in Findlay, Ohio. He earned a master's degree in business administration from the University of Dayton in 1982. He is a graduate of the Wharton School Advanced Management Program at the University of Pennsylvania.
Mr. Heminger is past-chairman of the Board of Trustees of Tiffin University. He serves on the boards of directors and executive committees of the American Petroleum Institute and American Fuel & Petrochemicals Manufacturers Association. He also serves on the boards of directors of Fifth Third Bancorp, PPG Industries, Inc. and JobsOhio. He is also a member of the Oxford Institute for Energy Studies.
He and his wife, Jane, live in Findlay, Ohio.
Appointed by: Gov. John R. Kasich
Term: 06/11/2018 – 05/13/2027