MPC

Business Context and Reporting Period

Company: Marathon Petroleum Corporation (MPC)
Filing Type: Form 10-Q (Unaudited)
Reporting Period: Quarter and six months ended June 30, 2026
Business Overview: MPC is a leading integrated downstream and midstream energy company operating one of the nation's largest refining systems. Its operations are organized into three segments: Refining & Marketing, Midstream (primarily conducted through MPLX LP), and Renewable Diesel.

Key Financial Metrics

Segment Adjusted EBITDA (YTD 2026 vs YTD 2025)

• Refining & Marketing: $8,032 million (vs $2,379 million)
• Midstream: $3,376 million (vs $3,361 million)
• Renewable Diesel: $296 million (vs $(61) million loss)
• Total Reportable Segments: $11,704 million (vs $5,679 million)

Material Changes vs. Prior Period

Profitability Surge: Net income attributable to MPC increased by $3.92 billion in Q2 2026 compared to Q2 2025. This was driven primarily by a $18.2 billion increase in sales revenues due to higher refined product prices ($1.12/gallon increase) and volumes.

Refining Margins: Refining & Marketing margin per barrel jumped to $36.33 in Q2 2026 from $17.58 in Q2 2025, supported by higher crack spreads and stable demand despite global supply disruptions.

Renewable Diesel Turnaround: The Renewable Diesel segment moved from a loss of $19 million in Q2 2025 to an adjusted EBITDA of $258 million in Q2 2026, driven by improved regulatory credit values.

Working Capital: Operating cash flow increased significantly ($8.87 billion YTD increase) due to favorable changes in working capital, specifically increases in accounts payable and receivables driven by higher energy commodity prices and volumes.

Guidance, Outlook, and Risks

Capital Allocation:

• Share Repurchases: MPC repurchased $3.28 billion of common stock YTD 2026. The Board approved an additional $5.0 billion authorization in May 2026, leaving $6.13 billion remaining.
• Dividends: A quarterly dividend of $1.00 per share was declared, payable September 10, 2026.
• Capital Expenditures: MPLX increased its 2026 growth capital spending outlook by $500 million to $2.9 billion to accelerate Gulf Coast fractionation and export facility expansions.

Strategic Petroleum Reserve (SPR): MPC is executing exchange contracts with the DOE, receiving approximately 22 million barrels in 2026 with an obligation to return 27 million barrels between April 2027 and July 2029. This created a derivative liability of $973 million as of June 30, 2026.

Risks and Contingencies:

• Legal Proceedings: Ongoing climate change litigation and environmental enforcement matters, including a consent decree at the Galveston Bay Refinery with potential stipulated penalties.
• Market Volatility: Exposure to regional conflicts (Middle East, Ukraine) impacting crude supply and pricing.
• Regulatory: Changes in tax regulations (e.g., 45Z credits) and environmental compliance costs.

Investor Verification Checklist

• Refining Margin Sustainability: Verify the durability of the $36.33/barrel margin given the volatility of global crude supply and potential demand shifts.
• SPR Exchange Impact: Assess the cash flow implications and derivative liability management regarding the obligation to return 27 million barrels to the SPR starting in 2027.
• Renewable Diesel Credit Reliance: Confirm the stability of regulatory credit values (45Z) which drove the segment's profitability turnaround.
• Capital Discipline: Monitor the execution of the increased $2.9 billion MPLX capital plan and its impact on free cash flow.
• Legal Exposure: Track developments in climate change litigation and the Galveston Bay Refinery consent decree penalties.