X0306 4 2021-02-25 0 0001698990 Magnolia Oil & Gas Corp MGY 0001627951 Yang Timothy D. C/O MAGNOLIA OIL & GAS CORPORATION NINE GREENWAY PLAZA, SUITE 1300 HOUSTON TX 77046 0 1 0 0 EVP - General Counsel & Sec Class A Common Stock 2021-02-25 4 F 0 6003 12.19 D 356002 D Relates to restricted stock units previously granted on February 25, 2020, under the Magnolia Oil & Gas Corporation Long Term Incentive Plan, as amended from time to time, that vest or have vested in three substantially equal installments on February 25, 2021, 2022, and 2023, subject to the officer's continued employment through the applicable vesting date. /s/ Timothy D. Yang 2021-03-01