MPLX LP 2025 K-3 tax packages now available on company website

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MPLX (NYSE: MPLX) announced that its 2025 Schedule K-3 investor tax packages, which provide information on items of international tax relevance, are now available on its website. Investors can access them via the Investor Data link under the Investors tab or directly at the dedicated tax package support link.

MPLX notes that only a limited group of investors, such as foreign unitholders, those computing a foreign tax credit, and certain corporate or partnership unitholders, may need the detailed Schedule K-3 information. The company does not plan to mail K-3 packages; unitholders can call a toll-free number to request an electronic copy by email.

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FINDLAY, Ohio, Aug. 17, 2026 /PRNewswire/ -- MPLX LP (NYSE: MPLX) today announced that the company's 2025 Schedule K-3 investor tax packages reflecting items of international tax relevance are now available on its website, https://www.mplx.com. Investors may select the Investor Data link under the Investors tab or use the following link: https://www.taxpackagesupport.com/mplxlp. 

A limited number of investors (primarily foreign unitholders, unitholders computing a foreign tax credit on their tax return and certain corporate and/or partnership unitholders) may need the detailed information disclosed on the Schedule K-3 for their specific reporting requirements. To the extent the Schedule K-3 is applicable to unitholders' tax return filing needs, MPLX encourages them to review the information contained on the Schedule K-3 and refer to the appropriate federal laws and guidance or consult with their tax advisor.

MPLX does not plan to mail K-3 tax packages to investors. For additional information or to receive an electronic copy of the Schedule K-3 via email, unitholders may call 1-800-232-0011 (toll free).

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. More information is available at www.mplx.com.

Investor Relations Contact: (419) 421-2071
Brian Worthington, Vice President, Investor Relations
Isaac Feeney, Director, Investor Relations
Evan Heminger, Analyst, Investor Relations

Media Contact: (419) 421-3577
Jamal Kheiry, Communications Manager

View original content:https://www.prnewswire.com/news-releases/mplx-lp-2025-k-3-tax-packages-now-available-on-company-website-302853332.html

SOURCE MPLX LP

FAQ

What did MPLX (NYSE: MPLX) announce about its 2025 Schedule K-3 tax packages on August 17, 2026?

MPLX announced that its 2025 Schedule K-3 investor tax packages are available on its website. According to MPLX, these documents provide international tax-relevant details for unitholders who need them for tax reporting and can be accessed through the Investors section or a dedicated tax support link.

How can MPLX unitholders access the 2025 Schedule K-3 tax packages online?

Unitholders can access the 2025 Schedule K-3 by visiting www.mplx.com and selecting Investor Data under the Investors tab. According to MPLX, they may also use the direct link to the tax package support site provided for MPLX LP unitholders.

Which MPLX investors are most likely to need the 2025 Schedule K-3 information?

According to MPLX, a limited number of investors primarily need Schedule K-3, including foreign unitholders, those computing a foreign tax credit, and certain corporate or partnership unitholders. These investors may require the detailed international tax information for their specific filing requirements.

Will MPLX mail physical copies of the 2025 Schedule K-3 tax packages to unitholders?

MPLX does not plan to mail 2025 Schedule K-3 tax packages to investors. According to MPLX, unitholders needing an electronic copy can request it via email by calling the toll-free investor support number provided in the announcement.

How can MPLX (MPLX) unitholders request an electronic copy of the 2025 Schedule K-3?

Unitholders can request an electronic Schedule K-3 by calling MPLX at 1-800-232-0011 (toll free). According to MPLX, investors may receive the K-3 via email if they need it for their tax return filing requirements.

What guidance does MPLX give investors about using the 2025 Schedule K-3 information?

MPLX encourages unitholders to review the Schedule K-3 if it is relevant to their tax filing needs. According to MPLX, investors should refer to applicable federal tax laws and guidance or consult a tax advisor when using the detailed international tax information.