- Marathon Petroleum said it would buy rival Andeavor for more than $23 billion.
- The combined company that would leapfrog Valero Energy as the largest U.S. refiner by capacity.
- The cash-and-stock deal valuesAndeavor at about $152 per share, representing a premium of about 24 percent toAndeavor stock's Friday close.
Marathon Petroleum said on Monday it would buy rival Andeavor for more than $23 billion, forming a company that would leapfrog Valero Energy as the largest independent U.S. refiner by capacity.
Shale oil fields have pushed U.S. crude production to record highs and industry experts argue operations that have capacity to refine light crude like Andeavor will be better positioned to take advantage of the boom.
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Andeavor also runs refineries in Alaska, California, Minnesota, New Mexico, North Dakota, Texas, Utah, and Washington which should complement Marathon's largely Mid-West and Gulf Coast-based operations.
The cash-and-stock deal values Andeavor, formerly known as Tesoro, at about $152 per share, a premium of about 24 percent to closing prices on Friday, driving shares 14.5 percent higher in initial premarket trading on Monday.
Marathon's board also approved an additional $5 billion share buyback, but its shares were just over 1 percent lower.
Including Andeavor's debt, Marathon is paying $35.6 billion to hold 66 percent of a combined company which will have the ability to process about 3.1 million barrels per day along with a large network of filling stations and oil and natural gas pipelines.
Marathon Chief Executive Gary Heminger, who oversaw a 20 percent rise in net profit in the first quarter, will run the combined company, with a senior role for Andeavor's chief executive, Gregory Goff.
"Each of our operating segments are strengthened through this transaction," Heminger said in a statement.
"It geographically diversifies our refining portfolio into attractive markets......enhances our midstream footprint in the Permian basin, and creates a nationwide retail and marketing portfolio," he added.
The deal is expected to close in the second half of this year.
Marathon's profit jumps on higher refining margins
Separately, Marathon reported its first-quarter profit jumped 23 percent, led by higher refining and marketing margins.
Marathon's higher profit and its deal for Andeavor both come as U.S. refiners benefit from stronger demand thanks to U.S. shale output hitting record highs.
U.S. refiners, which source heavy crude from Canada, have also benefited from cheaper oil from the region.
Marathon's refining and marketing margins rose 1.3 percent to $1.81 billion in the three months ended March 31.
Net income attributable to Marathon rose to $37 million or 8 cents per share, from $30 million or 6 cents per share a year earlier.
The company, which also operates convenience store chain Speedway, said total revenue jumped 16 percent to $18.98 billion.