Welcome to our dedicated page for MPLX LP SEC filings (Ticker: MPLX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
MPLX LP filings document the disclosure record of a Delaware master limited partnership with common units representing limited partnership interests listed on the New York Stock Exchange. Its reports include 8-K disclosures for operating results and financial condition, exhibits containing earnings releases, and annual reporting on the partnership's midstream energy infrastructure and logistics business.
The filing record also covers capital-structure and financing matters, including revolving credit agreements, underwriting agreements, supplemental indentures, and debt-securities exhibits filed under registration statements. Governance disclosures address MPLX GP LLC as general partner, board and officer changes, compensatory arrangements, shareholder voting matters, material-event reporting, and risk disclosure tied to the partnership's operations and securities.
Walker Ray N JR reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP reported that director Ray N. Walker Jr. received a grant of 2,696.387 Common Units (limited partner interests) as his annual 2026 equity retainer award on April 30, 2026. The amended report corrects this award amount and shows he beneficially owned 4,440.086 units directly after the grant as of that date, excluding any later transactions.
SURMA JOHN P reported acquisition or exercise transactions in this Form 4 filing.
John P. Surma, a director associated with MPLX LP, received a grant of 3,028.941 Common Units (Limited Partner Interests) on April 30, 2026 as his annual 2026 equity retainer award, at a stated price of $0.0000 per unit.
This amendment corrects the previously reported amount of the 2026 equity retainer grant and states that Surma beneficially owned 92,219.200 common units directly following the award as of April 30, 2026; this balance excludes any transactions after that date.
STICE J MICHAEL reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP director J Michael Stice received 3028.9410 Common Units of limited partner interests on April 30, 2026 as his annual 2026 equity retainer award at a stated price of 0.0000 per unit. After this grant, he beneficially owned 56324.0950 Common Units as of that date. The amendment corrects the originally reported award size and holdings balance and indicates the transaction was not made under a Rule 10b5-1 trading plan.
SEMPLE FRANK M reported acquisition or exercise transactions in this Form 4 filing.
Frank M. Semple, a director of MPLX GP LLC, received an annual 2026 equity retainer award of 3,028.941 Common Units of MPLX LP on April 30, 2026. After this grant, he beneficially owned 61,201.275 Common Units, all held directly.
The amended report corrects the size of the 2026 equity retainer and the resulting beneficial ownership balance as of April 30, 2026; it does not reflect any transactions after that date.
Peiffer Garry L. reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP director Garry L. Peiffer received an annual 2026 equity retainer award of 2,696.3870 common units of limited partner interests on April 30, 2026, at a grant price of $0.0000 per unit. Following this award, he beneficially owned 66,768.7300 common units as of that date. This amendment corrects the amount of the 2026 equity retainer award and the reported holdings.
HELMS CHRISTOPHER A reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP director Christopher A. Helms received a grant of 2,696.387 Common Units (limited partner interests) as his annual 2026 equity retainer award on April 30, 2026. This amendment corrects the award amount and reports 83,447.484 common units beneficially owned as of that date, excluding any later transactions.
Breves Christine S reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP director Christine S. Breves received a grant of 2,696.387 Common Units (Limited Partner Interests) on April 30, 2026 as her annual 2026 equity retainer award. Following this grant, she beneficially owned 14,533.844 Common Units as of that date. This amended report corrects the previously reported award amount.
MPLX LP reported Q2 2026 total revenues and other income of $3,312 million, up from $3,003 million in 2025. Net income was $1,087 million and net income attributable to MPLX LP was $1,077 million, or $1.06 per common unit basic and diluted, versus $1.03 a year earlier.
For the first six months of 2026, revenues were $6,350 million compared with $6,127 million, while net income attributable to MPLX LP declined to $1,989 million from $2,174 million. Adjusted EBITDA attributable to MPLX LP was $1,775 million for Q2 and $3,504 million year-to-date; distributable cash flow was $1,450 million for Q2 and $2,858 million for the six-month period.
Operating cash flow for the first half of 2026 was $3,049 million, funding $1,484 million of capital expenditures, $2,184 million of cash distributions and $100 million of unit repurchases. The partnership ended June 30, 2026 with total assets of $42,969 million, long-term debt of $24,389 million and 1,014,040,229 common units outstanding. A Q2 2026 cash distribution of $1.0765 per common unit, totaling $1,092 million, was declared.
MPLX LP reported second-quarter 2026 net income attributable to MPLX of $1,077 million and adjusted EBITDA of $1,775 million, compared with $1,048 million and $1,690 million in the prior-year quarter. The partnership generated $1,702 million of operating cash flow, $1,450 million of distributable cash flow and adjusted free cash flow of $668 million, supporting a $1.0765 per-unit distribution with 1.3x coverage and the return of $1.1 billion of capital. MPLX expects distribution increases of 12.5% in 2026 and 2027.
Crude Oil and Products Logistics segment adjusted EBITDA was $1,161 million and Natural Gas and NGL Services was $614 million, both up versus a year earlier. MPLX raised its 2026 growth capital spending outlook by $500 million to $2.9 billion, directing over 90% toward natural gas and NGL infrastructure, including projects such as the Harmon Creek III plant starting operations in August 2026 and multiple Permian pipeline and treating expansions. As of June 30, 2026, MPLX held $1,031 million in cash, had $2.5 billion available under its bank revolver and $1.5 billion under an intercompany loan, with a leverage ratio of 3.7x and $1.0 billion remaining under unit repurchase authorizations.
Walker Ray N JR reported acquisition or exercise transactions in this Form 4 filing.
MPLX LP director Ray N. Walker Jr. received a grant of 78.436 Common Units (Limited Partner Interests) on May 15, 2026 as a non-cash award. Following this grant, his directly held position increased to 4,069.124 common units, reflecting routine equity-based compensation rather than an open-market purchase.