REG-Holding(s) in Company

Diversified EnergyAnnouncement

Mon 18:00

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TR-1: Standard form for notification of major holdings

1. Issuer Details

ISIN 
GB00BQHP5P93

Issuer Name 
DIVERSIFIED ENERGY COMPANY PLC

UK or Non-UK Issuer 
UK

2. Reason for Notification

An acquisition or disposal of voting rights 

3. Details of person subject to the notification obligation

Name 
Ameriprise Financial, Inc.

City of registered office (if applicable) 
Minneapolis

Country of registered office (if applicable) 
United States 

4. Details of the shareholder 

Full name of shareholder(s) if different from the person(s) subject to the
notification obligation, above 

City of registered office (if applicable)

Country of registered office (if applicable)

5. Date on which the threshold was crossed or reached

17-Oct-2025

6. Date on which Issuer notified

20-Oct-2025

7. Total positions of person(s) subject to the notification obligation 

                                                                            % of voting rights attached to shares (total of 8.A)  % of voting rights through financial instruments (total of 8.B 1 + 8.B 2)  Total of both in % (8.A + 8.B)  Total number of voting rights held in issuer  
 Resulting situation on the date on which threshold was crossed or reached  5.019000                                              0.000000                                                                   5.019000                        3857026                                       
 Position of previous notification (if applicable)                          4.971000                                              0.000000                                                                   4.971000                                                                      

8. Notified details of the resulting situation on the date on which the
threshold was crossed or reached 
8A. Voting rights attached to shares

 Class/Type of shares ISIN code(if possible)  Number of direct voting rights (DTR5.1)  Number of indirect voting rights (DTR5.2.1)  % of direct voting rights (DTR5.1)  % of indirect voting rights (DTR5.2.1)      
 GB00BQHP5P93                                 0                                        3857026                                      0.000000                            5.019000                                    
 Sub Total 8.A                                3857026                                                                               5.019000%                                                                       

8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))

 Type of financial instrument  Expiration date  Exercise/conversion period  Number of voting rights that may be acquired if the instrument is exercised/converted  % of voting rights  
                                                                                                                                                                                       
 Sub Total 8.B1                                                                                                                                                                        

8B2. Financial Instruments with similar economic effect according to
(DTR5.3.1R.(1) (b))

 Type of financial instrument  Expiration date  Exercise/conversion period  Physical or cash settlement  Number of voting rights  % of voting rights  
                                                                                                                                                      
 Sub Total 8.B2                                                                                                                                       

9. Information in relation to the person subject to the notification
obligation 
2. Full chain of controlled undertakings through which the voting rights
and/or the financial instruments are effectively held starting with the
ultimate controlling natural person or legal entities (please add additional
rows as necessary)

 Ultimate controlling person           Name of controlled undertaking                              % of voting rights if it equals or is higher than the notifiable threshold  % of voting rights through financial instruments if it equals or is higher than the notifiable threshold  Total of both if it equals or is higher than the notifiable threshold     
 Ameriprise Financial, Inc. (Chain 1)                                                              0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle Investments UK International Limited  0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle (Europe) Limited                      0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle AM (Holdings) Plc                     0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle Group (Holdings) Limited              0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle Group (Management) Limited            0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle Holdings Limited                      0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Threadneedle Management Limited                    0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc. (Chain 2)                                                              0.000000                                                                    0.000000                                                                                                  0.000000%                                                                 
 Ameriprise Financial, Inc.            Columbia Management Investment Advisers, LLC                5.009000                                                                    0.000000                                                                                                  5.009000%                                                                 

10. In case of proxy voting 
Name of the proxy holder

The number and % of voting rights held

The date until which the voting rights will be held

11. Additional Information 
Columbia Management Investment Advisers, LLC is wholly owned by Ameriprise
Financial, Inc.

Columbia Threadneedle Management Limited is wholly owned by Columbia
Threadneedle Holdings Limited, which is wholly owned by Columbia Threadneedle
Group (Management) Limited, which is wholly owned by Columbia Threadneedle
Group (Holdings) Limited, which is wholly owned by Columbia Threadneedle AM
(Holdings) Plc, which is wholly owned by Columbia Threadneedle (Europe)
Limited, which is wholly owned by Columbia Threadneedle Investments UK
International Limited, which is wholly owned by Ameriprise Financial, Inc.

12. Date of Completion 
20-Oct-2025

13. Place Of Completion 
Swindon, UK