0001104659-26-107498 Sample Contracts

FIRST SUPPLEMENTAL INDENTURE
First Supplemental Indenture • September 14th, 2026 • Magnolia Oil & Gas Corp • Crude petroleum & natural gas • New York

First Supplemental Indenture (this “Supplemental Indenture”), dated as of September 10, 2026, among Magnolia Midstream LLC, a Delaware limited liability company (the “New Guarantor”), a Subsidiary of Magnolia Oil & Gas Operating LLC, a Delaware limited liability company (the “Company”), and Regions Bank, an Alabama banking corporation, as trustee (the “Trustee”).

FIRST SUPPLEMENTAL INDENTURE
Supplemental Indenture • September 14th, 2026 • Magnolia Oil & Gas Corp • Crude petroleum & natural gas • New York

This FIRST SUPPLEMENTAL INDENTURE, dated as of September 10, 2026 (this “Supplemental Indenture”), is entered into by and among Magnolia Oil & Gas Operating LLC, a Delaware limited liability company (the “Company”), the party that is signatory hereto as Guarantor (the “Guaranteeing Subsidiary”) and U.S. Bank Trust Company, National Association, as trustee (the “Trustee”).

Magnolia Oil & Gas Operating LLC Unaudited Pro Forma Condensed Combined Financial Information
Purchase and Sale Agreement • September 14th, 2026 • Magnolia Oil & Gas Corp • Crude petroleum & natural gas

On September 10, 2026, Magnolia Oil & Gas Corporation, a Delaware corporation (“Magnolia” or the “Company”), and Magnolia Oil & Gas Operating LLC, a Delaware limited liability company (“Buyer”), completed the previously announced purchase and sale agreement (the “Agreement” or the “Transaction”) with WildFire Energy I LLC, a Delaware limited liability company (“Seller”), pursuant to which Buyer agreed to purchase from Seller 100% of the issued and outstanding limited liability company interests (the “Acquisition”) of WildFire Intermediate Holdings, LLC (“WildFire”).

INDENTURE dated as of September 26, 2024 among WILDFIRE INTERMEDIATE HOLDINGS, LLC Each of the Guarantors Party Hereto and as Trustee
Indenture • September 14th, 2026 • Magnolia Oil & Gas Corp • Crude petroleum & natural gas • New York

INDENTURE, dated as of September 26, 2024, among (a) WildFire Intermediate Holdings, LLC, a Delaware limited liability company, as the Company (as defined herein), (b) certain subsidiaries of the Company, as Guarantors (as defined herein), and (c) U.S. Bank Trust Company, National Association , as Trustee (as defined herein).

REGISTRATION RIGHTS AGREEMENT
Registration Rights Agreement • September 14th, 2026 • Magnolia Oil & Gas Corp • Crude petroleum & natural gas • Texas

THIS REGISTRATION RIGHTS AGREEMENT (this “Agreement”) is dated as of September 10, 2026, by and among Magnolia Oil & Gas Corporation, a Delaware corporation (the “Company”), and each of the persons listed under the heading “Holders” on the signature pages attached hereto (the “Holders,” and each individually, a “Holder”).