UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO SECTION 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of January, 2024

Commission File Number: 001-41870

Diversified Energy Company plc

(Translation of registrant’s name into English)

1600 Corporate Drive

Birmingham, Alabama 35242

Tel: +1 205 408 0909

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F x Form 40-F ¨

EXPLANATORY NOTE

On January 10, 2024, Diversified Energy Company plc (the “Company”) delivered a letter to the U.S. House of Representatives’ Committee on Energy and Commerce (the “Committee”) in response to a December 18, 2023, letter received from four members of the Committee, requesting information. A copy of the Company’s letter is attached hereto as Exhibit 99.1.

EXHIBIT INDEX

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.