Every material Form 8-K Marathon Petroleum filed with the SEC in 2026, read and summarized by AI: what happened, the key figures, whether it reads positive or negative for shareholders, and how big a deal it is (impact 1-5). Newest first; each brief links to its own page and to the filing on SEC.gov.
Marathon Petroleum Corp. reported third-quarter 2026 net income attributable to the company of $7.4 billion, or $26.59 per diluted share, up from $1.4 billion a year earlier, driven by higher market crack spreads. The company returned $3.3 billion of capital to shareholders and announced a 10% increase in its quarterly dividend alongside an incremental $5 billion share repurchase authorization. Additionally, MPC announced the $4.2 billion divestiture of its St. Paul Park and Mandan refineries and related midstream assets.
Third-quarter 2026 net income attributable to MPC was $7.4 billion, or $26.59 per diluted share, compared with $1.4 billion, or $4.51 per diluted share, in the third quarter of 2025.
Adjusted EBITDA reached $11.7 billion for the third quarter of 2026, up from $3.2 billion in the same period last year.
MPC announced the $4.2 billion divestiture of the St. Paul Park and Mandan refineries and related midstream assets, expected to close at the end of 2026.
The board approved an incremental $5 billion share repurchase authorization and a 10% increase in the quarterly dividend.
Marathon Petroleum Corp. (MPC) said its board increased to eleven members and elected David E. Constable, former Chairman and CEO of Fluor Corporation, as a director effective March 1, 2027. He will serve on the Compensation and Organization Development Committee and the Sustainability and Public Policy Committee, and receive the same non-employee director pay described in the company's March 16, 2026 proxy statement.
Board election announced by the Board on October 28, 2026; effective March 1, 2027
Board size increases from ten to eleven members
Constable previously led Fluor Corporation as Chairman and CEO and Sasol Ltd. as CEO from 2011 to 2016
Constable joins the Compensation and Organization Development and Sustainability and Public Policy committees
Marathon Petroleum (MPC) reported second-quarter 2026 net income attributable to MPC of $5.1 billion, or $17.73 per diluted share, up from $1.2 billion, or $3.96 per diluted share, a year earlier. Adjusted EBITDA rose to $8.5 billion from $3.3 billion, driven mainly by the Refining & Marketing segment, and the company returned over $2.8 billion to shareholders in the quarter.
Q2 2026 net income attributable to MPC of $5.1 billion, or $17.73 per diluted share, versus $1.2 billion, or $3.96 per diluted share, in Q2 2025
Adjusted EBITDA of $8.5 billion versus $3.3 billion; Refining & Marketing segment adjusted EBITDA was $6.7 billion versus $1.9 billion
MPLX 2026 growth capital spending outlook raised by $500 million to $2.9 billion; MPC had $7.8 billion of cash and $6.1 billion remaining under buyback authorizations
Marathon Petroleum reported first-quarter 2026 net income attributable to MPC of $511 million, or $1.73 per diluted share, compared with a net loss of $(74) million, or $(0.24) per share, a year earlier. The Board also approved an incremental $5 billion share repurchase authorization, which would bring the total available to $8.6 billion as of March 31, 2026, if added to the $3.6 billion already available.
Net income attributable to MPC was $511 million ($1.73 per diluted share), versus a net loss of $(74) million in Q1 2025; adjusted net income was $487 million ($1.65 per diluted share)
Adjusted EBITDA was $2.8 billion, versus $2.0 billion in Q1 2025; cash from operating activities was $1.1 billion, versus $(64) million
The company returned over $1.0 billion to shareholders in the quarter and had $2.2 billion of cash and cash equivalents as of March 31, 2026
Refining & Marketing segment adjusted EBITDA was $1.4 billion, versus $489 million, while Midstream adjusted EBITDA fell to $1.6 billion from $1.7 billion
Marathon Petroleum (MPC) entered into a new $5.0 billion five-year revolving credit facility on April 7, 2026, replacing its 2022 credit agreement, which had no borrowings outstanding when terminated. MPLX, its sponsored partnership, signed a separate $2.5 billion five-year revolver the same day, replacing its $2.0 billion 2022 facility. The filing reports no current borrowings under either new facility and no earnings results, only a preliminary cash figure.
MPC's new $5.0 billion unsecured revolving credit facility matures on April 7, 2031, with an option to add up to $1.0 billion in commitments.
MPLX's new $2.5 billion unsecured revolving credit facility also matures on April 7, 2031.
MPC must keep its Consolidated Net Debt to Total Capitalization ratio at or below 65% at each fiscal quarter end.
As of March 31, 2026, MPC had $2.2 billion of cash and cash equivalents, including $1.5 billion held by MPLX.
Marathon Petroleum reported fourth-quarter 2025 net income attributable to MPC of $1.5 billion, or $5.12 per diluted share, up from $371 million, or $1.15 per share, a year earlier. For the full year, net income was $4.0 billion, or $13.22 per diluted share, versus $3.4 billion, or $10.08, in 2024, and the company returned $4.5 billion to shareholders in 2025.
Q4 2025 adjusted net income was $1.2 billion, or $4.07 per diluted share, versus $249 million, or $0.77, in Q4 2024.
Full-year 2025 adjusted net income was $3.3 billion, or $10.70 per diluted share, versus $3.3 billion, or $9.51, in 2024.
Cash from operations was $8.3 billion for 2025, down from $8.7 billion in 2024.
As of December 31, 2025, $4.4 billion remained available under share repurchase authorizations.
Briefs are written by AI from the filing text (each brief's own page names the model) and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the model's reading of the filing for shareholders, not a price forecast. Not investment advice.
Only material 8-Ks get a brief: results, deals, executive changes, restructuring, impairments, delisting notices, restatements, cybersecurity incidents and other disclosed events. Routine filings (vote results, exhibits only) are skipped. Every Marathon Petroleum filing is on SEC EDGAR ↗. 8-K briefs of other companies →