REG-Transaction in Own Shares

Diversified EnergyAnnouncement

24/09/2025 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 129,323 Ordinary Shares of 20 Pence each in
the capital of the Company (the "Shares") in the market at a volume-weighted
average price of $14.2418 per Share through Mizuho Securities USA LLC (MSUSA).
The Shares acquired will, in due course, be cancelled.

Aggregated Information

 Date of Purchase:                                    23 September 2025  
 Aggregate Number of Ordinary Shares Purchased:       129,323            
 Lowest Price Paid per Share (USD):                   14.10              
 Highest Price Paid per Share (USD):                  14.33              
 Volume-Weighted Average Price Paid per Share (USD):  14.2418            

Following the cancellation of Shares, Diversified will have 77,434,079
Ordinary Shares of 20 Pence each in issue and no Ordinary Shares are held in
treasury. This figure of 77,434,079 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:  23 September 2025                                    
 Investment firm:     Mizuho Securities USA LLC                            



 Aggregate          Daily             Daily             Daily        Trading   
 number of          volume            highest           lowest       Venue     
 ordinary shares    weighted          price paid        price per              
 acquired           average           per share         share                  
                    price paid                                                 
 6,967              $ 882.1400        $ 14.32           $ 14.17      ARCX      
 1,542              $ 114.2900        $ 14.32           $ 14.23      ASPN      
 48                 $ 14.3200         $ 14.32           $ 14.32      BAML      
 90                 $ 14.1500         $ 14.15           $ 14.15      BATS      
 654                $ 128.4300        $ 14.32           $ 14.20      BATY      
 590                $ 128.2000        $ 14.31           $ 14.20      EDGA      
 7,371              $ 327.0900        $ 14.32           $ 14.10      EDGX      
 86,179             $ 17,529.8050     $ 14.33           $ 14.15      IEXG      
 148                $ 28.5600         $ 14.32           $ 14.24      JPMX      
 2,658              $ 85.7000         $ 14.32           $ 14.24      JSJX      
 1,400              $ 28.4000         $ 14.20           $ 14.20      LEVL      
 500                $ 14.2000         $ 14.20           $ 14.20      MSPL      
 62                 $ 71.3800         $ 14.32           $ 14.22      SGMT      
 6,754              $ 442.6300        $ 14.32           $ 14.20      UBSA      
 300                $ 42.7900         $ 14.30           $ 14.23      XBOS      
 210                $ 42.7900         $ 14.32           $ 14.19      XCIS      
 5,110              $ 825.5900        $ 14.32           $ 14.18      XNAS      
 8,740              $ 868.2300        $ 14.32           $ 14.15      XNYS      
 Trading venue      Currency                                                   
 NYSE               USD               $ 14.2418         129,323                

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