Magnolia Oil & Gas Corp

Trading Arrangements

During the three months ended December 31, 2024 no director or officer of Magnolia adopted, modified, orterminated any Rule 10b5-1 trading arrangement or any non-Rule 10b5-1 trading arrangement, as each term is defined in Item 408(a) and (c) of Regulation S-K.

Magnolia hasadopted and maintains the Amended Insider Trading and Regulation FD Policy (the “Insider Trading Policy”), which the Company believes is reasonably designed to promote compliance with federal and state securities laws, rules and regulations, and NYSE listing standards. The Insider Trading Policy applies globally to all directors, officers, and employees of the Company and its subsidiaries, any other person or entity designated by the Company from time-to-time, and all persons or entities acting on behalf of the Company, such as auditors, agents, and consultants, as well as to Magnolia itself (collectively the “Covered Persons”). It governs the purchase, sale, or other disposition of the Company’s securities, other equity investments, and derivative securities (e.g., common stock, units, warrants, options, puts, calls or other derivatives, whether or not issued by the Company) or any other type of securities that the Company may issue, such as preferred stock and convertible debentures, and generally prohibits, among other things, Covered Persons from engaging in transactions in Magnolia’s securities while aware of material, non-public information relating to Magnolia or its securities. Covered Persons are also prohibited from trading in the securities of another company if they become aware of material, non-public information about that company in the course of their position with the Company.

The foregoing description of the Insider Trading Policy does not purport to be complete and is qualified in its entirety by reference to the Insider Trading Policy, which is attached to this Annual Report on Form 10-K as Exhibit 19.1 and incorporated herein by reference.