Marathon Petroleum generated $135.38B in trailing twelve-month revenue, down 0.0% year-over-year. Net income was $4.6B with a 3.42% net margin. Gross margin stands at 10.37% and operating margin at 6.65%. Diluted EPS is $15.19, which grew 1.1% year-over-year. Based on the Q1 2026 filing.