Here are the S-3 shelf registrations from MPLX LP (MPLX) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An S-3 covers the shelf registration that lets an established company sell over time, so if you follow MPLX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full MPLX filings page.
MPLX LP filed a Form S-3 shelf registration to offer, from time to time after effectiveness, an unlimited number and amount of common units, other classes of units representing limited partner interests and debt securities. The prospectus states net proceeds will be used for general partnership purposes, including repayment or refinancing of debt, acquisitions, working capital, capital expenditures, repurchases and investments in affiliates. Shares outstanding were 1,014,733,719 common units as of April 30, 2026.