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, Ohio, in 1982. He is a graduate of the Wharton School Advanced Management Program at the University of Pennsylvania.
Mr. Heminger joined the company in 1975. His more than 37 years with Marathon include experience in a variety of groups and functions. In addition to five years in various financial and administrative roles, he spent three years in London, United Kingdom, as audit supervisor of the Brae Project. He worked with Emro Marketing for eight years in several marketing and commercial roles. In 1991, Mr. Heminger was named vice president of Emro Marketing's Western Division. Emro was the predecessor of Speedway SuperAmerica LLC. From 1995 to 1996 he served as president of Marathon Pipe Line Company. He assumed the position of manager, Business Development & Joint Interest of Marathon Oil Company in November 1996. Mr. Heminger was named vice president of Business Development for Marathon Ashland Petroleum LLC* upon its formation in January 1998 and was named senior vice president, Business Development in 1999. In January 2001, he was named executive vice president, Supply, Transportation and Marketing. Mr. Heminger was appointed president of Marathon Petroleum Company LLC**, a wholly owned subsidiary of Marathon, in September 2001. In addition, he was named executive vice president – Downstream of Marathon Oil Corporation and served as a member of Marathon’s Executive Committee. He was named to his current position on July 1, 2011.
Mr. Heminger is chairman of the board of trustees of Tiffin University. He is chairman of the American Petroleum Institute (API) Downstream Committee and a member of the Oxford Institute for Energy Studies. He also serves on the board of directors of Fifth Third Bancorp and JobsOhio, the board of directors and Executive Committee for the American Fuel & Petrochemical Manufacturers, and the U.S.-Saudi Arabian Business Council Executive Committee.
* Name changed to Marathon Petroleum Company LLC on September 1, 2005
** Name changed to Marathon Petroleum Company LP on October 24, 2010