Here are the 10-K annual reports from Mplx LP PFD CL A (MPLXP) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-K covers the audited annual report, with the full financial statements, so if you follow MPLXP and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MPLXP filings page.
MPLX LP is a large master limited partnership that owns midstream energy infrastructure across the U.S., including crude oil and refined product pipelines, marine assets, terminals, storage caverns, and extensive natural gas and NGL gathering, processing and fractionation capacity.
The business is organized into two segments: Crude Oil and Products Logistics and Natural Gas and NGL Services. As of December 31, 2025, Marathon Petroleum Corporation (“MPC”) owned about 64 percent of MPLX’s common units and provided 48 percent of total 2025 revenues and other income, making MPC its key customer and sponsor.
MPLX emphasizes long-term, fee-based contracts with minimum volume commitments, cost discipline, and returning capital to unitholders. Recent actions include declaring a $1.0765 per-unit distribution and issuing $1.0 billion of 5.30 percent senior notes due 2036 and $500 million of 6.10 percent senior notes due 2056.