X0306 4/A 2020-08-03 2020-08-05 0 0001698990 Magnolia Oil & Gas Corp MGY 0001613357 Stavros Christopher G C/O MAGNOLIA OIL & GAS CORPORATION NINE GREENWAY PLAZA, SUITE 1300 HOUSTON TX 77046 0 1 0 0 Executive VP, CFO Class A Common Stock 2020-08-03 4 F 0 14757 5.91 D 438171 D This Form 4/A is being filed to report the corrected number of shares disposed of to satisfy certain tax withholding obligations and the resulting total number of securities beneficially owned by the reporting person following the reported transaction. /s/ Timothy D. Yang,as Attorney-in-Fact 2020-08-10