MPLX

MPLX LP Q1 2026 Filing Summary

Business Context and Reporting Period

This Form 10-Q covers the quarterly period ended March 31, 2026, for MPLX LP, a master limited partnership formed by Marathon Petroleum Corporation (MPC). MPLX operates midstream energy infrastructure and logistics assets across two reportable segments: Crude Oil and Products Logistics and Natural Gas and NGL Services. As of April 30, 2026, there were 1,014,733,719 common units outstanding.

Key Financial Metrics

Material Changes vs. Prior Period

• Revenue Decline: Total revenues decreased $86 million year-over-year. This was primarily driven by a $139 million decrease in product-related revenue due to lower NGL prices, the divestiture of Rockies operations, and changes in derivative valuations. These were partially offset by higher volumes in the Southwest.
• Net Income Decrease: Net income attributable to MPLX LP fell $214 million, largely due to the revenue declines and a $62 million increase in net interest and other financial costs resulting from increased borrowings to fund acquisitions in 2025.
• Segment Performance:
  • Crude Oil and Products Logistics: Adjusted EBITDA increased $14 million to $1,111 million, driven by rate and fee increases.
  • Natural Gas and NGL Services: Adjusted EBITDA decreased $42 million to $618 million, impacted by the Rockies divestiture, lower NGL pricing, and the absence of a non-recurring benefit present in Q1 2025.
• Capital Expenditures: Total capital expenditures (growth and maintenance) were $843 million, a significant increase from $341 million in Q1 2025, reflecting higher growth spending and investments in unconsolidated affiliates.

Guidance, Outlook, and Risks

• Distributions: MPLX declared a quarterly distribution of $1.0765 per common unit for Q1 2026, totaling $1,092 million, payable May 15, 2026.
• Capital Outlook: The company announced a 2026 capital outlook of $2.7 billion (net of reimbursements), comprising $2.4 billion in growth capital and $300 million in maintenance capital. Focus areas include the Permian to Gulf Coast value chain and Marcellus/Permian gas processing.
• Debt Management: In February 2026, MPLX issued $1.5 billion in new senior notes (2036 and 2056 maturities) to repay $1.5 billion of maturing notes. In April 2026, the company replaced its credit agreement with a new $2.5 billion facility maturing in 2031.
• Acquisitions: Recent strategic acquisitions include Northwind Midstream (Permian sour gas) and full ownership of BANGL, LLC. The Rockies operations were divested in late 2025.
• Risks: Key risks include commodity price volatility, regulatory changes (including environmental matters and the Dakota Access Pipeline litigation), and the ability to maintain investment-grade credit ratings. The company notes potential impacts from the U.S.-Iran conflict and general economic conditions.

Investor Verification Checklist

• Debt Maturity Profile: Verify the impact of the new $1.5 billion note issuance on future interest expense and cash flow coverage.
• Rockies Divestiture Impact: Confirm the long-term revenue and EBITDA impact of the Rockies sale on the Natural Gas and NGL Services segment.
• Derivative Valuations: Review the $71 million derivative loss included in net income and the specific fair value assumptions for embedded derivatives.
• Capital Expenditure Execution: Monitor the $2.7 billion 2026 capital plan execution, particularly the $608 million in growth capex incurred in Q1.
• Related Party Dependence: Note that 50% of total revenues and 26% of total costs are associated with related party transactions (primarily MPC).