REG-Transaction in Own Shares

Diversified EnergyAnnouncement

22/09/2025 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 80,914 Ordinary Shares of 20 Pence each in the
capital of the Company (the "Shares") in the market at a volume-weighted
average price of $14.1864 per Share through Mizuho Securities USA LLC (MSUSA).
The Shares acquired will, in due course, be cancelled.

Aggregated Information

 Date of Purchase:                                    19 September 2025  
 Aggregate Number of Ordinary Shares Purchased:       80,914             
 Lowest Price Paid per Share (USD):                   14.04              
 Highest Price Paid per Share (USD):                  14.34              
 Volume-Weighted Average Price Paid per Share (USD):  14.1864            

Following the cancellation of Shares, Diversified will have 77,692,725
Ordinary Shares of 20 Pence each in issue and no Ordinary Shares are held in
treasury. This figure of 77,692,725 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:  19 September 2025                                    
 Investment firm:     Mizuho Securities USA LLC                            



 Aggregate      Daily           Daily             Daily        Trading   
 number of      volume          highest           lowest       Venue     
 ordinary       weighted        price paid        price per              
 shares         average         per share         share                  
 acquired       price paid                                               
 10,679         $ 14.2167       $ 14.32           $ 14.04      ARCX      
 1,552          $ 14.1486       $ 14.33           $ 14.04      ASPN      
 1,183          $ 14.1668       $ 14.33           $ 14.09      BAML      
 2,113          $ 14.2195       $ 14.33           $ 14.11      BATS      
 400            $ 14.2600       $ 14.26           $ 14.26      BATY      
 300            $ 14.2400       $ 14.32           $ 14.14      EDGA      
 4,247          $ 14.2190       $ 14.30           $ 14.08      EDGX      
 400            $ 14.2800       $ 14.28           $ 14.28      HRTF      
 382            $ 14.2867       $ 14.29           $ 14.28      ICBX      
 29,825         $ 14.2212       $ 14.34           $ 14.04      IEXG      
 873            $ 14.1850       $ 14.28           $ 14.07      JPMX      
 5,353          $ 14.1138       $ 14.29           $ 14.07      JSJX      
 300            $ 14.2600       $ 14.26           $ 14.26      KNLI      
 300            $ 14.2100       $ 14.21           $ 14.21      LEVL      
 5              $ 14.1100       $ 14.11           $ 14.11      MEMX      
 500            $ 14.2600       $ 14.26           $ 14.26      MSPL      
 1,059          $ 14.1443       $ 14.33           $ 14.07      SGMT      
 1,344          $ 14.1589       $ 14.33           $ 14.04      UBSA      
 400            $ 14.1920       $ 14.33           $ 14.12      XBOS      
 10,957         $ 14.1757       $ 14.33           $ 14.05      XNAS      
 8,742          $ 14.1548       $ 14.28           $ 14.07      XNYS      
 Trading venue  Currency                                                 
 NYSE           USD             $ 14.1864         80,914                 

 
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