REG-Transaction in Own Shares

Diversified Energy CoAnnouncement

23/12/2025 07:02

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DIVERSIFIED ENERGY COMPANY

("Diversified", or the "Company")

DIVERSIFIED ENERGY COMPANY (NYSE:DEC; LSE:DEC) announces that, in accordance
with the terms of its share buyback program announced on March 20, 2025, the
Company has purchased 103,367 shares of common stock, par value $0.01 per
share of the Company (the "Shares") in the market at a volume-weighted average
price of $13.9938 per Share through Mizuho Securities USA LLC (MSUSA). The
Shares acquired will, in due course, be cancelled.

Aggregated Information

 Date of Purchase:                                    December 22, 2025  
 Aggregate Number of Shares Purchased:                103,367            
 Lowest Price Paid per Share (USD):                   13.93              
 Highest Price Paid per Share (USD):                  14.00              
 Volume-Weighted Average Price Paid per Share (USD):  13.9938            

Following the cancellation of Shares, Diversified will have 79,182,595 shares
of common stock, in issue and no shares of common stock is held in treasury.
This figure of 79,182,595 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 program.

Schedule of Purchases

 Aggregate   Daily           Daily           Daily         Trading   
 number      volume          highest         lowest        Venue     
 of          weighted        price           price                   
 ordinary    average         paid per        per                     
 shares      price           share           share                   
 acquired    paid                                                    
 4,592       $ 13.9920       $ 14.00         $ 13.95       ARCX      
 4,384       $ 13.9945       $ 14.00         $ 13.97       ASPN      
 3,533       $ 13.9950       $ 14.00         $ 13.99       BAML      
 5,356       $ 13.9985       $ 14.00         $ 13.99       BATS      
 2,804       $ 13.9888       $ 14.00         $ 13.93       BATY      
 1,636       $ 13.9900       $ 13.99         $ 13.99       BIDS      
 900         $ 13.9933       $ 14.00         $ 13.98       EDGA      
 9,026       $ 13.9966       $ 14.00         $ 13.98       EDGX      
 37,097      $ 13.9919       $ 14.00         $ 13.95       IEXG      
 10,531      $ 13.9935       $ 14.00         $ 13.97       JPMX      
 250         $ 13.9950       $ 14.00         $ 13.99       LEVL      
 59          $ 13.9980       $ 14.00         $ 13.99       MEMX      
 2,100       $ 14.0000       $ 14.00         $ 14.00       MSPL      
 1,083       $ 13.9935       $ 14.00         $ 13.98       SGMT      
 6,732       $ 13.9951       $ 14.00         $ 13.97       UBSA      
 1,207       $ 13.9774       $ 14.00         $ 13.96       XBOS      
 400         $ 13.9967       $ 14.00         $ 13.99       XCIS      
 3,914       $ 13.9909       $ 14.00         $ 13.96       XNAS      
 7,763       $ 13.9927       $ 14.00         $ 13.93       XNYS      
 Trading     Currency                                                
 venue                                                               
 NYSE        USD             $ 13.9938       103,367                 

For further information, please contact:

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

About Diversified Energy Company

Diversified is a leading publicly traded energy company focused on acquiring,
operating, and optimizing cash generating energy assets. 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