REG-Transaction in Own Shares

Diversified EnergyAnnouncement

29/09/2025 07:00

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DIVERSIFIED ENERGY COMPANY PLC

("Diversified", or the "Company")

DIVERSIFIED ENERGY COMPANY PLC (LSE:DEC, NYSE:DEC) announces that, in
accordance with the terms of its share buyback programme announced on 20 March
2025, the Company has purchased 62,547 Ordinary Shares of 20 Pence each in the
capital of the Company (the "Shares") in the market at a volume-weighted
average price of $14.3282 per Share through Mizuho Securities USA LLC (MSUSA).
The Shares acquired will, in due course, be cancelled.

Aggregated Information

 Date of Purchase:                                    25 September 2025  
 Aggregate Number of Ordinary Shares Purchased:       62,547             
 Lowest Price Paid per Share (USD):                   14.28              
 Highest Price Paid per Share (USD):                  14.35              
 Volume-Weighted Average Price Paid per Share (USD):  14.3282            

Following the cancellation of Shares, Diversified will have 77,356,470
Ordinary Shares of 20 Pence each in issue and no Ordinary Shares are held in
treasury. This figure of 77,356,470 may be used by shareholders as the
denominator for the calculations by which they will determine if they are
required to notify their interest in, or a change to their interest in, the
Company under the FCA's Disclosure Guidance and Transparency Rules.

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the Market
Abuse Regulation), (as in force in the UK and as amended by the Market Abuse
(Amendment) (EU Exit) Regulations 2019), the table below contains detailed
information of the individual trades made by Mizuho Securities USA LLC as part
of the buyback programme.

Schedule of Purchases

 Shares purchased:    DIVERSIFIED ENERGY COMPANY PLC (ISIN: GB00BQHP5P93)  
 Dates of purchases:  26 September 2025                                    
 Investment firm:     Mizuho Securities USA LLC                            



 Aggregate number      Daily volume weighted       Daily highest price paid      Daily lowest price per   Trading Venue  
 of ordinary shares    average price paid          per share                     share                                   
 acquired                                                                                                                
 1,771                 $ 14.3247                   $ 14.35                       $ 14.29                  ARCX           
 638                   $ 14.3114                   $ 14.33                       $ 14.29                  ASPN           
 105                   $ 14.3050                   $ 14.31                       $ 14.30                  BAML           
 418                   $ 14.3375                   $ 14.35                       $ 14.30                  BARX           
 650                   $ 14.3480                   $ 14.35                       $ 14.34                  BATS           
 1,169                 $ 14.3352                   $ 14.35                       $ 14.30                  BATY           
 510                   $ 14.3475                   $ 14.35                       $ 14.35                  BIDS           
 165                   $ 14.3500                   $ 14.35                       $ 14.35                  CDED           
 400                   $ 14.3425                   $ 14.35                       $ 14.33                  EDGA           
 2,830                 $ 14.3422                   $ 14.35                       $ 14.30                  EDGX           
 500                   $ 14.3500                   $ 14.35                       $ 14.35                  HRTF           
 200                   $ 14.3500                   $ 14.35                       $ 14.35                  ICBX           
 31,914                $ 14.3210                   $ 14.35                       $ 14.29                  IEXG           
 504                   $ 14.3250                   $ 14.35                       $ 14.30                  ITGI           
 1,070                 $ 14.3333                   $ 14.35                       $ 14.30                  JPMX           
 6,150                 $ 14.3314                   $ 14.35                       $ 14.29                  JSJX           
 532                   $ 14.3250                   $ 14.35                       $ 14.30                  KNLI           
 1,000                 $ 14.3325                   $ 14.35                       $ 14.31                  LEVL           
 27                    $ 14.3100                   $ 14.31                       $ 14.31                  MEMX           
 2,707                 $ 14.3250                   $ 14.35                       $ 14.29                  SGMT           
 2,111                 $ 14.3310                   $ 14.35                       $ 14.30                  UBSA           
 178                   $ 14.3233                   $ 14.35                       $ 14.31                  VFMI           
 401                   $ 14.3200                   $ 14.34                       $ 14.30                  XBOS           
 3,282                 $ 14.3143                   $ 14.35                       $ 14.28                  XNAS           
 3,315                 $ 14.3332                   $ 14.35                       $ 14.30                  XNYS           
 Trading venue         Currency                                                                                          
 NYSE                  USD                         $ 14.3282                     62,547                                  

For further information, please contact:

 Diversified Energy Company PLC                                        +1 973 856 2757  
 Doug Kris                                                             dkris@dgoc.com   
 Senior Vice President, Investor Relations & Corporate Communications  www.div.energy   

About Diversified Energy Company PLC

Diversified is a leading publicly traded energy company focused on natural gas
and liquids production, transport, marketing, and well retirement. Through our
differentiated strategy, we acquire existing, long-life assets and invest in
them to improve environmental and operational performance until retiring those
assets in a safe and environmentally secure manner. Recognized by ratings
agencies and organizations for our sustainability leadership, this
solutions-oriented, stewardship approach makes Diversified the Right Company
at the Right Time to responsibly produce energy, deliver reliable free cash
flow, and generate shareholder value