Sec Form 3 Filing - Hutson Robert R Jr @ Diversified Energy Co PLC - 2025-11-21

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Hutson Robert R Jr 2. Issuer Name and Ticker or Trading Symbol Diversified Energy Co PLC [ DEC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Executive Officer (Last) (First) (Middle) C/O DIVERSIFIED ENERGY COMPANY, 1600 CORPORATE DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 11/21/2025 (Street) BIRMINGHAM, AL35242 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common stock, par value $0.01 per share 1,276,141 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units $ 0 ( 2 ) ( 1 ) ( 1 ) Common stock 64,657 D Stock Options (Right to Buy) ( 3 ) $ 22 ( 4 ) 04/14/2019 04/14/2028 Common stock 64,333 D Stock Options (Right to Buy) ( 5 ) $ 31.44 ( 6 ) 05/09/2020 05/09/2029 Common stock 6,600 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hutson Robert R Jr C/O DIVERSIFIED ENERGY COMPANY 1600 CORPORATE DRIVE BIRMINGHAM, AL35242 X Chief Executive Officer Signatures /s/ Benjamin Sullivan, Attorney-in-Fact 12/01/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On April 10, 2025, the Reporting Person was granted 60,898 restricted stock units vesting on March 31, 2028, subject to the Reporting Person's continued employment. Dividend equivalent rights accrue with respect to these restricted stock units when and as dividends are paid on the Issuer's common stock. The number of derivative securities in column 3 includes 3,759 dividend equivalent units. ( 2 )Restricted stock units convert into shares of common stock on a one-for-one basis. ( 3 )This option was granted on April 14, 2018 and vested ratably over three years. ( 4 )The exercise price for this option is denominated in British pounds sterling at a price of GBP 16.80 per share. The exercise price reported herein was converted from British pounds sterling to United States dollars at a conversion rate of GBP 1.00 to USD 1.3098. The exercise price is the actual British pounds sterling amount regardless of the exchange rate on the date of exercise. ( 5 )This option was granted on May 9, 2019 and vested ratably over three years. ( 6 )The exercise price for this option is denominated in British pounds sterling at a price of GBP 24.00 per share. The exercise price reported herein was converted from British pounds sterling to United States dollars at a conversion rate of GBP 1.00 to USD 1.3098. The exercise price is the actual British pounds sterling amount regardless of the exchange rate on the date of exercise.

Remarks: Exhibit 24 - Power of Attorney

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