MPLX LP

We are a diversified, large-cap master limited partnership formed by MPC in 2012. We own and operate midstream energy infrastructure and logistics assets and provide fuels distribution services across the United States. Our assets include a network of crude oil and refined product pipelines; an inland marine business; light-product, asphalt, heavy oil, and marine terminals; storage caverns; refinery tanks, docks, loading racks, and associated piping; crude oil and natural gas gathering systems and pipelines; and natural gas and NGL treating, processing, and fractionation facilities. Our business operates through two segments: Crude Oil and Products Logistics and Natural Gas and NGL Services. The Crude Oil and Products Logistics segment focuses on gathering, transporting, storing, and distributing crude oil, refined products, other hydrocarbon-based products, and renewables. This segment also includes our refining logistics, fuels distribution, inland marine businesses, terminals, rail facilities, and storage caverns. The Natural Gas and NGL Services segment provides wellhead to market services, including gathering, treating, processing, and transporting natural gas and NGLs. We maintain a strategic relationship with MPC, which is a significant source of our revenues. We have long-term, fee-based agreements with minimum volume commitments with MPC. As of December 31, 2025, MPC owned our general partner and approximately 64 percent of our outstanding common units. In 2025, MPC accounted for 48 percent of our total revenues and other income, primarily within our Crude Oil and Products Logistics segment.