FINDLAY, Ohio, Feb. 5, 2026 /PRNewswire/ -- MPLX LP (NYSE:MPLX) announced today that it has priced $1.5 billion in aggregate principal amount of unsecured senior notes in an underwritten public offering consisting of $1.0 billion aggregate principal amount of 5.300% senior notes due 2036 and $500 million aggregate principal amount of 6.100% senior notes due 2056.

MPLX intends to use the net proceeds from this offering to repay MPLX's outstanding $1.5 billion aggregate principal amount of 1.750% senior notes due March 2026 at maturity.

The closing of this offering is expected to occur on February 12, 2026, subject to the satisfaction of customary closing conditions.

Citigroup Global Markets Inc., Barclays Capital Inc., MUFG Securities Americas Inc. and RBC Capital Markets, LLC are acting as joint book-running managers for this offering.

This offering is being made only by means of a prospectus and related prospectus supplement, which may be obtained for free by visiting the Securities and Exchange Commission's website at http://www.sec.gov. Alternatively, copies may be obtained by contacting the following, which are acting as representatives of the underwriters:

Citigroup Global Markets Inc.

c/o Broadridge Financial Solutions

1155 Long Island Avenue

Edgewood, New York 11717

Toll-free: 1-800-831-9146

Email: prospectus@citi.com

Barclays Capital Inc.

c/o Broadridge Financial Solutions

1155 Long Island Avenue

Edgewood, New York 11717

Toll-free: 1-888-603-5847

Email: barclaysprospectus@broadridge.com

MUFG Securities Americas Inc.

1221 Avenue of the Americas, 6th Floor

New York, New York 10020

Toll-free: 1-877-649-6848

RBC Capital Markets, LLC

Brookfield Place

200 Vesey Street, 8th Floor

New York, New York 10281

Toll-free: 1-866-375-6829

This news release shall not constitute an offer to sell or a solicitation of an offer to buy any securities, nor shall there be any sale of these securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About MPLX LP

MPLX is a diversified, large-cap master limited partnership that owns and operates midstream energy infrastructure and logistics assets and provides fuels distribution services. MPLX's assets include a network of crude oil and refined product pipelines; an inland marine business; light-product terminals; storage caverns; refinery tanks, docks, loading racks, and associated piping; and crude and light-product marine terminals. The company also owns crude oil and natural gas gathering systems and pipelines as well as natural gas and NGL processing and fractionation facilities in key U.S. supply basins.

Investor Relations Contacts: (419) 421-2071

Kristina Kazarian, Vice President Finance and Investor Relations

Brian Worthington, Senior Director, Investor Relations

Isaac Feeney, Director, Investor Relations

Evan Heminger, Analyst, Investor Relations

Media Contact: (419) 421-3577

Jamal Kheiry, Communications Manager

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SOURCE MPLX LP

MPLX LP prices $1.5 billion senior notes offering