Investor Presentaiton

Consistent Return of Capital Through Share Repurchases M MARATHON 1st quarter of 2019: $885 million of repurchases 7.5 ■ Consolidated capital return target: ≥ 50% of discretionary free cash flow¹ Existing authorization²: $4.9 billion, potentially completed by year end 2020 2012-2016 (Cummulative) Share Repurchases ($ billions) 2.4 2017 3.3 2018 1 Capital return includes dividends paid to MPC shareholders, MPLX and ANDX distributions paid to public unitholders, and MPC share repurchases; discretionary free cash flow = consolidated operating cash flow less maintenance and regulatory capex. 2 Existing authorization as of December 31, 2018. 52 52

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