Chord Energy Corp

The information set forth below is included herein for the purpose of providing the disclosure required under “Item 1.01 – Entry into a Material Definitive Agreement.” of Form 8-K.

Amendment to Credit Facility

On November 3, 2025, the Company entered into the Seventh Amendment (the “Seventh Amendment”) to that certain Amended and Restated Credit Agreement dated as of July 1, 2022, by and among the Company, Oasis Petroleum North America LLC, a Delaware limited liability company, Wells Fargo Bank, N.A., as administrative agent, and the other parties party thereto (the “Credit Agreement”). In connection with entry into the Seventh Amendment, the semi-annual redetermination of the Company’s borrowing base under the Credit Agreement was completed on November 3, 2025, which reaffirmed the borrowing base and the aggregate elected commitment at $2.75 billion and $2.0 billion, respectively. Pursuant to the Seventh Amendment, the maturity date of the Credit Facility was extended from July 1, 2027 to November 3, 2029 and the Term SOFR Loans are no longer subject to the 0.1% credit spread adjustment. Additionally, certain baskets were increased and certain provisions were updated to reflect current market practice.

The foregoing description of the Seventh Amendment to the Credit Agreement is a summary only, does not purport to be complete, and is qualified in its entirety by reference to the full text of the Seventh Amendment, which is attached hereto as Exhibit 10.1 and incorporated by reference into this Item 5.

Rule 10b5-1 trading arrangements.

During the fiscal quarter ended September 30, 2025, none of our directors or officers (as defined in Rule 16a-1 under the Exchange Act)adopted orterminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408 of Regulation S-K.