Magnolia Oil & Gas(MGY) - 2018 Q4 - Annual Report

OR ¨ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ___________ to ___________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the year ended December 31, 2018 Commission File Number: 001-38083 Magnolia Oil & Gas Corporation (Exact Name of Registrant as Specified in its Charter) (State or other jurisdict ...