Marathon Petroleum Corporation
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Company History
Founded 1887 in Findlay, Ohio, United States
Several small Ohio oil producers banded together in 1887 to form the Ohio Oil Company — a collective response to the chaos of the post-Civil War oil patch. Two years later, in 1889, John D. Rockefeller's Standard Oil Trust acquired the company. It remained part of Standard Oil until the Supreme Court's landmark 1911 antitrust ruling broke the trust apart, returning the Ohio Oil Company to independent operation. The company built its first pipeline in 1906, while still inside the Standard Oil structure. That physical infrastructure — connecting Ohio crude production to downstream markets — established the midstream logic that still shapes how Marathon Petroleum thinks about integration. After independence, the company grew steadily through the first half of the twentieth century, acquiring the Lincoln Oil Refining Company in 1924 and continuing to build out its Midwest refining footprint. The modern Marathon Petroleum took shape gradually through a series of acquisitions: BP's Texas City refinery and related assets in 2012, Hess Corporation's retail operations in 2014. Then in 2018 came Andeavor — the largest acquisition in the company's history at $23.3 billion — which doubled the company's refining capacity and pushed it firmly into West Coast markets through the ARCO brand and former Tesoro assets. CEO Maryann T. Mannen leads a company that has been shaped by the Standard Oil breakup, two world wars, the OPEC oil shocks, and multiple refining margin cycles. The 2020 Speedway sale completed the transformation from an integrated refiner-retailer to a pure-play refiner with a captive midstream arm in MPLX LP.
Marathon Petroleum possesses a historic, fragmented founding story, essentially representing the strategic consolidation of the deepest roots of the original Ohio oil boom and the controversial breakup of Standard Oil. The foundational origins of the modern refiner trace back to 1887 in Lima, Ohio. During the chaotic early days of the American oil boom, independent drillers discovered a lucrative oil field in Ohio. However they were at the mercy of John D. Rockefeller's ruthless Standard Oil monopoly, which heavily controlled pipeline rates and refining capacity. In a rebellious, aggressive move to bypass Rockefeller's monopoly, 14 independent oilmen pooled their resources to found The Ohio Oil Company. Their foundational masterstroke was aggressive vertical integration; they rapidly built their own pipelines and eventually refineries to protect their drilling operations. However, their independence was extremely short-lived. By 1889, Standard Oil bought out The Ohio Oil Company, making it a lucrative, subsidiary of Rockefeller's empire. The defining corporate pivot occurred in 1911 when the US Supreme Court broke up the Standard Oil monopoly. The Ohio Oil Company became independent once again. It expanded into nationwide refining and marketing, eventually rebranding as Marathon in 1962. In 2011, reflecting the modern trend of separating volatile drilling from stable refining, the parent company executed a historic, spin-off, separating the exploration business (Marathon Oil) from the refining business (Marathon Petroleum), establishing the focused downstream giant that exists today.
Several small oil companies banded together to form The Ohio Oil Company in Lima, Ohio, at the dawn of the American petroleum industry. The company was founded to exploit the Lima-Indiana oil field, one of the nation's first major oil discoveries.
John D. Rockefeller's Standard Oil Trust purchased The Ohio Oil Company, bringing it under the control of the dominant force in American industry. Corporate headquarters were moved to Findlay, Ohio, in 1905.
Ohio Oil constructed its first pipeline, running from Martinsville, Illinois, to Preble, Indiana, marking the beginning of the company's integrated transportation infrastructure.
The U.S. Supreme Court broke up the Standard Oil monopoly under the Sherman Antitrust Act. The Ohio Oil Company became independent again, free to pursue its own strategy but stripped of the protective umbrella of the world's largest corporation.
Ohio Oil purchased Lincoln Oil Refining Company, which included the Robinson refinery in Illinois and 17 Linco brand service stations in Robinson and Terre Haute, Indiana, expanding into refining and retail.
Ohio Oil purchased Transcontinental Oil Company, acquiring oil and natural gas wells, three refineries, bulk storage plants, and filling stations. The deal included the Marathon product name, the Pheidippides Greek runner trademark, and the 'Best in the Long Run' slogan. Ohio Oil stock was first publicly traded on the NYSE.
The Ohio Oil Company was the first to introduce the metal credit plate, the precursor to the modern credit card, to build customer loyalty at Marathon service stations.
The company purchased Aurora Gasoline Company, acquiring 680 service stations featuring the Speedway 79 Stratofuel brand, and purchased the Detroit refinery from philanthropist Max Fisher.
The company officially changed its name from The Ohio Oil Company to Marathon Oil Company, reflecting the dominance of the Marathon brand and the company's evolution into a national integrated petroleum enterprise.
Marathon Oil was acquired by U.S. Steel Corporation (later USX Corporation) in a $6.5 billion deal, becoming part of a diversified industrial conglomerate that combined steel and energy operations.
USX Corporation split into two independent companies: United States Steel Corporation and Marathon Oil Corporation. The newly independent Marathon Oil focused on exploration and production, with headquarters in Houston, Texas.
On June 30, 2011, Marathon Petroleum Corporation was spun off from Marathon Oil, with Marathon Oil stockholders receiving one share of MPC common stock for every two shares of Marathon Oil common stock. The newly independent downstream company was headquartered in Findlay, Ohio.
Marathon Petroleum acquired BP's Texas City refinery and related assets, adding significant Gulf Coast refining capacity and strengthening the company's position in one of the most important refining markets in the United States.
On October 1, 2018, Marathon Petroleum completed the acquisition of Andeavor for $23.3 billion in equity and $35.6 billion in enterprise value. The transaction created the largest independent refiner in the United States, adding 10 refineries, more than 3,300 retail stations under brands including ARCO, and Andeavor Logistics.
Marathon Petroleum sold its Speedway retail convenience store business to 7-Eleven for $21 billion. The sale included approximately 3,900 stores and the proceeds were used to reduce debt, strengthen the balance sheet, and return capital to shareholders.
Maryann T. Mannen was appointed President and CEO in 2024. The company established a Renewable Diesel segment as a separate reportable business, and the Martinez Renewables joint venture with Neste reached full production capacity of 730 million gallons per year.
Marathon Petroleum achieved full-year refining utilization of 94% and margin capture of 105% in 2025. The company generated $8.3 billion in cash from operations, delivered adjusted EBITDA of $12.0 billion, and returned $4.5 billion to shareholders.
Marathon Petroleum reported $135.222 billion in total revenues and other income, $4.047 billion in net income attributable to MPC, and about $12.0 billion in adjusted EBITDA.
The acquisition of Andeavor was designed to create the largest independent refiner in the United States by combining Marathon Petroleum's strength east of the Mississippi with Andeavor's strong presence in the Western US and Mid-Continent. The transaction added 10 refineries, more than 3,300 retail stations under brands including ARCO, and Andeavor Logistics.
Marathon Petroleum acquired BP's Texas City refinery and related assets to add significant Gulf Coast refining capacity and strengthen the company's position in one of the most important refining markets in the United States.
Marathon Petroleum acquired Hess Corporation's retail operations to expand its East Coast marketing footprint and add retail locations under the Marathon brand.
Since its establishment in 1887, Marathon Petroleum Corporation expanded from an early-stage venture into a recognized leader in Petroleum Refining & Marketing, overcoming key market challenges.
Over its history, Marathon Petroleum Corporation executed decisive strategic pivots toward scalable monetization and digital distribution, securing its current market leadership.
By continually modernizing operations and embracing workflow automation, Marathon Petroleum Corporation maintains resilience through changing technological and economic cycles.