Marathon Petroleum (NYSE: NYSE: MPC ) is an American petroleum, refining, marketing, and transportation company headquartered in Findlay company. The company was originally founded in 2005 and was a wholly owned subsidiary of Marathon Oil until a corporate spin-off in 2011. Since the company's spin-off, the company has seen its share price more than double from its present price at ~$20 per share to more than $40 per share.