Marathon Petroleum Retirement Plan

Marathon Petroleum Retirement Plan

Marathon Petroleum Retirement Plan was established in 1998 as a non-contributory employer-defined benefit pension plan. It covers eligible employees of Marathon Petroleum Company and its affiliates. The plan sponsor is Marathon Petroleum Corporation. The plan allocates across real estate limited partnerships, northwest US timberland holdings through dedicated LLCs, and other Level 3 assets. It also maintains positions in Blackstone Private Equity Funds. Geographic exposure centers on the United States with specific holdings in Ohio, Illinois, Kentucky, and Pacific Northwest timber regions. The plan participates in co-investments and holds interests through MPLX LP. The plan reports 2,193 million USD in assets. It maintains relationships with service providers including The Northern Trust Company as trustee and Fidelity Investments as recordkeeper. The plan sponsor holds membership in the American Petroleum Institute and Committee on Investment of Employee Benefit Assets. In April 2025 the sponsor held its annual shareholder meeting covering governance and financial results. The plan operates as a corporate pension vehicle sponsored by Marathon Petroleum Corporation with direct ties to the parent company's midstream and refining operations through MPLX LP.