Marathon Petroleum Corporation

Marathon Petroleum Corporation (MPC) is a leading integrated downstream and midstream energy company headquartered in Findlay, Ohio. It operates the nation's largest refining system, producing gasoline, diesel, and specialty products that feed its extensive network of Marathon brand retail outlets across the United States. MPC also owns a majority stake in MPLX LP, a midstream partner that manages gathering, processing, fractionation, and transportation infrastructure for crude oil and light products. Together, refining, marketing, and midstream logistics give MPC a unique, vertically integrated footprint that supports efficient supply chains and a strong brand presence. The company's focus on operational excellence and strategic asset ownership positions it as a key player in the U.S. energy market.