SCHEDULE 13D

The address of the principal office of the Reporting Persons is 600 New Hampshire Ave NW, Suite 1200, Washington, DC 20037.

The principal business of the Reporting Persons is to invest in securities.

During the last five years, none of the Reporting Persons has been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).

During the last five years, none of the Reporting Persons has been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which proceeding it or he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Not applicable.

The information set forth or incorporated by reference in Items 4 and 6 of this Schedule 13D is incorporated by reference into this Item 3.

On January 24, 2025, Diversified Energy Company plc, a public limited company incorporated in England and Wales (the "Issuer"), Maverick Natural Resources, LLC, a Delaware limited liability company ("Maverick Natural Resources"), Remington Merger Sub, LLC, a Delaware limited liability company and indirect wholly owned subsidiary of the Company ("Merger Sub"), Diversified Gas & Oil Corporation, a Delaware corporation and direct wholly owned subsidiary of the Issuer ("DGOC"), and EIG Management, solely in its capacity as representative of the holders, entered into a merger agreement (the "Merger Agreement") pursuant to which Merger Sub would merge with and into Maverick Natural Resources (the "Merger"), with Maverick Natural Resources surviving the merger as a wholly owned subsidiary of DGOC. On March 14, 2025, the Merger closed (the "Closing") and the Reporting Persons received, in addition to certain cash consideration, 14,330,718 ordinary shares ("EIG Merger Shares"), par value of GBP0.20 per share, of the Issuer ("Ordinary Shares") in exchange for all of the Reporting Persons' issued and outstanding limited liability company interests of Maverick Natural Resources, which are being reported herein in addition to an aggregate 1,584,689 Ordinary Shares of the Issuer previously owned by the Reporting Persons. In connection with Closing, (i) the Reporting Persons entered into a registration rights agreement (the "Registration Rights Agreement") with the Issuer pursuant to which, among other things, (a) the Issuer has granted the Reporting Persons certain customary registration rights, including rights to require the Issuer to file and maintain the effectiveness of a registration statement with respect to the re-sale of Ordinary Shares and (b) the Reporting Persons agreed not to sell one-third of the EIG Merger Shares until September 14, 2025, another one-third of the EIG Merger Shares until December 14, 2025 and the last one-third of the EIG Merger Shares until March 14, 2026 and (ii) EIG Management entered into a relationship agreement (the "Relationship Agreement") with the Issuer pursuant to which, among other things, the Issuer granted EIG Management the right to nominate two directors if the Reporting Persons hold at least 20% of the Issuer's Ordinary Shares and one director if the Reporting Persons hold at least 10% of the Issuer's Ordinary Shares. Pursuant to the Relationship Agreement, Mr. Wade was appointed to the board of directors of the Issuer on April 11, 2025. The descriptions of the Merger Agreement, Registration Rights Agreement and Relationship Agreement in this Item 4 are not intended to be complete and are qualified are their entirety by the agreements that are included hereto as Exhibits 2, 3 and 4, respectively, and are incorporated by reference herein. On May 27, 2025, the Reporting Persons agreed to sell 1,584,689 Ordinary Shares in an unregistered block trade pursuant to Rule 144 under the Securities Act of 1933, as amended (the "Block Trade"), at a price of $13.73 per Ordinary Share. The amounts reported herein as beneficially owned by the Reporting Persons gives effect to such Block Trade. Although the Reporting Persons do not have any specific plan or proposal to acquire, transfer or dispose of Ordinary Shares at the time of this filing, consistent with its investment purposes, the Reporting Persons may, either directly or through one or more affiliates, from time to time or at any time and subject to price, market and general economic and fiscal conditions and other factors, acquire or seek to acquire additional or all Ordinary Shares in the open market, in privately negotiated transactions or otherwise, or dispose of or seek to dispose of all or a portion of such Ordinary Shares now owned or hereafter acquired. In addition, subject to the Registration Rights Agreement limitations, the Reporting Persons may, either directly or through one or more affiliates, from time to time or at any time and subject to price, market and general economic and fiscal conditions and other factors, consolidate or seek to consolidate assets held by the Reporting Persons and their affiliates, including acquiring assets owned by or selling assets to the Issuer, or make changes or seek to make changes to the capital structure of the Issuer. Each Reporting Person reserves the right to change its intention with respect to any or all of the matters required to be disclosed in this Item 4. The Reporting Persons have not made a determination regarding a maximum or minimum number of Ordinary Shares or other securities of the Issuer that they may hold at any point in time. Also, consistent with their investment intent and ongoing evaluation of their investment in the Issuer and alternatives to such investment, including a potential consolidation, acquisition or sale of assets or Ordinary Shares or changes to the Issuer's capital structure, the Reporting Persons may engage in communications with, without limitation, one or more shareholders of the Issuer or one or more officers of the Issuer regarding the Issuer. During the course of such communications, the Reporting Persons may advocate or oppose one or more courses of action. Except as set forth herein and below, or as would occur upon completion of any of the matters discussed herein, the Reporting Persons have no present plans or proposals that would relate to or result in any of the matters set forth in clauses (a) through (j) of Item 4 of this Schedule 13D. Although the foregoing reflects activities presently contemplated by such persons with respect to the Issuer, the foregoing is subject to change at any time.

The information set forth in lines 11 and 13 of each of the cover pages hereto is incorporated by reference into this Item 5.

The information (i) set forth or incorporated by reference in Item 4 of this Schedule 13D and (ii) set forth on lines 7 through 10 of each of the cover pages hereto is incorporated by reference into this Item 5.

Except in connection with the Merger and Block Trade as described in Item 4 hereof, none of the Reporting Persons has effected any transaction related to the Ordinary Shares during the past 60 days.

Except as otherwise described in this Schedule 13D, no other person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, securities covered by this Schedule 13D.

Not applicable.

The information set forth or incorporated by reference in Item 4 of this Schedule 13D is incorporated by reference into this Item 6.

1 Joint Filing Agreement. 2 Merger Agreement, dated as of January 24, 2025, by and among Maverick Natural Resources, LLC, Diversified Energy Company plc, Remington Merger Sub, LLC, and for certain provisions therein, Diversified Gas & Oil Corporation and EIG Management Company, LLC (incorporated by reference to Exhibit 99.1 to the Issuer's Form 6.K filed on January 27, 2025). 3 Registration Rights Agreement, dated as of March 14, 2025, by and between Diversified Energy Company PLC, the holders set on the signature pages thereto, and, solely for purposes of Section 2.8 therein, Diversified Gas & Oil Corporation (incorporated by reference to Exhibit 4.14 to the Issuer's Form 20-F filed on March 17, 2025). 4 Relationship Agreement, dated March 14, 2025, between Diversified Energy Company PLC and EIG Management, LLC (incorporated by reference to Exhibit 4.15 to the Issuer's Form 20-F filed on March 17, 2025).