MPLX LP raises $1.5B via 2036 and 2056 notes to refinance 2026 maturity

MPLX secures long-dated debt to replace near-term maturity

Refinancing with 2036 and 2056 unsecured notes

MPLX LP is pricing $1.5 billion of unsecured senior notes in an underwritten public offering to replace a $1.5 billion note maturing in March 2026. The offering consists of $1.0 billion of 5.300% senior notes due 2036 and $500 million of 6.100% senior notes due 2056, and the net proceeds are intended to repay the outstanding 1.750% senior notes that come due next year. The move is aimed at addressing a concentrated near-term maturity and pushing principal repayments well into the next decade.

By issuing two tranches that extend maturities to 2036 and 2056, MPLX is materially lengthening its debt maturity profile and reducing immediate refinancing pressure. The newly priced notes are unsecured senior obligations, preserving parity with the company’s other unsecured indebtedness. While the coupons on the new securities are higher than the 2026 notes they replace, the transactions trade near-market yields for long-dated corporate paper and provide MPLX with a longer runway to manage cash flows and capital allocation across its midstream operations.

The offering is being led by joint book‑running managers Citigroup Global Markets, Barclays Capital, MUFG Securities Americas and RBC Capital Markets, and is expected to close on Feb. 12, 2026, subject to customary closing conditions. MPLX is using the underwritten public format and a prospectus and related prospectus supplement filed with the U.S. Securities and Exchange Commission govern the offering. The company frames the transaction as part of ongoing liability management to support its midstream infrastructure and fuels distribution businesses.

Offering logistics and regulatory notices

The offering is made only by means of the prospectus and supplement available free on the SEC website and from the underwriters, and MPLX notes that the news release does not constitute an offer to sell or a solicitation to buy in any jurisdiction where it would be unlawful. Additional registration and offering details are contained in the filed prospectus documents.

Company profile and contacts

MPLX is a diversified large‑cap master limited partnership that owns and operates midstream energy infrastructure and fuels distribution assets. Investor relations may be reached by phone, and the company lists vice president and director-level investor relations contacts for further inquiries.