Marathon Petroleum Corp. engages in the refining, marketing, and transportation of petroleum products. It operates through the Refining and Marketing, and Midstream segments. The Refining and Marketing segment includes refining crude oil and other feedstocks, purchasing ethanol, and refined products for resale and distribution of refined products. The Midstream segment refers to transportation, storing, distribution, and marketing of crude oil and refined products. The company was founded in 1887 and is headquartered in Findlay, OH.