X0306 4 2019-01-02 0 0001510295 Marathon Petroleum Corp MPC 0001199009 GALANTE EDWARD G C/O MARATHON PETROLEUM CORPORATION 539 S. MAIN STREET FINDLAY OH 45840 1 0 0 0 Common Stock 2019-01-02 4 A 0 660.211 0.00 A 7485.738 D Reflects one less share acquired upon the conversion of the insider's holdings in the merger of the Issuer's wholly owned subsidiary and Andeavor, effective October 1, 2018, which were previously estimated at 6,299 shares in the Form 4 filed on 10/3/2018. Includes 3.089 shares acquired pursuant to dividend reinvestment and not previously reported pursuant to Rule 16a-11. /s/ Molly R. Benson, Attorney-in-Fact for Edward G. Galante 2019-01-04