DEC

dec-20260226FALSE000192244600019224462026-02-262026-02-26

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): February 26, 2026

Diversified Energy Company (Exact name of registrant as specified in its charter)

Delaware 011-41870 41-2283606

(State or Other Jurisdiction of Incorporation) (Commission File Number) (IRS Employer Identification No.)

1600 Corporate Drive Birmingham, Alabama 35242

(Address of Principal Executive Office) (Zip Code)

Registrant’s Telephone Number, Including Area Code: (205) 408-0909 (Former Name or Former Address, if Changed Since Last Report): Not Applicable

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions: ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2()) ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered, pursuant to Section 12(b) of the Act:

Title of each class Trading Symbol(s) Name of each exchange on which registered

Common Stock, par value $0.01 per share DEC New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter) Emerging Growth Company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02    Results of Operations and Financial condition. On February 26, 2026, Diversified Energy Company (the “Company”) issued a press release announcing its financial and operational results for the quarter and year ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated into this Item 2.02 by reference. In accordance with General Instruction B.2 of Form 8-K, the information contained in this Current Report on Form 8-K under Item 2.02 and set forth in the attached Exhibit 99.1 is deemed to be “furnished” solely pursuant to Item 2.02 of Form 8-K and shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as expressly set forth by specific reference in such a filing. Item 7.01     Regulation FD Disclosure. The information set forth under Item 2.02 is incorporated into this Item 7.01 by reference as if fully set forth herein. On February 26, 2026, the Company posted a new investor presentation on its website, www.div.energy. A copy of the presentation can be reviewed at the Company’s website by first selecting “Investor Resources,” then selecting the “Presentations” tab. Information on the Company’s website does not constitute a part of this Current Report on Form 8-K.

EXHIBIT INDEX

Exhibit No. Description

99.1 Press Release dated February 26, 2026

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.

Diversified Energy Company

February 26, 2026 By: /s/ Bradley G. Gray

Date Bradley G. Gray

President & Chief Financial Officer