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TR-1: Standard form for notification of major holdings
1. Issuer Details
ISIN
US25520W1071
Issuer Name
Diversified Energy Company
UK or Non-UK Issuer
Non-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
04-Feb-2026
6. Date on which Issuer notified
30-Mar-2026
7. Total positions of person(s) subject to the notification obligation
. % of voting % of voting rights Total of both Total number
rights attached through financial in % (8.A + of voting
to shares (total instruments (total 8.B) rights held in
of 8.A) of 8.B 1 + 8.B 2) issuer
Resulting situation on the date on which threshold was crossed or reached 5.056000 0.000000 5.056000 3945895
Position of previous notification (if applicable)
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 Number of Number of indirect % of direct voting % of indirect
shares ISIN code(if direct voting voting rights rights (DTR5.1) voting rights
possible) rights (DTR5.2.1) (DTR5.2.1)
(DTR5.1)
US25520W1071 0 3945895 0.000000 5.056000
Sub Total 8.A 3945895 5.056000%
8B1. Financial Instruments according to (DTR5.3.1R.(1) (a))
Type of financial Expiration Exercise/conversion Number of voting rights that % of
instrument date period may be acquired if the voting
instrument is rights
exercised/converted
Sub Total 8.B1
8B2. Financial Instruments with similar economic effect according to
(DTR5.3.1R.(1) (b))
Type of Expiration Exercise/conversion Physical or cash Number of % of
financial date period settlement voting rights voting
instrument 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 Name of controlled % of voting % of voting Total of both if it
controlling person undertaking rights if it rights through equals or is higher
equals or is financial than the notifiable
higher than the instruments if it threshold
notifiable threshold equals or is
higher than the
notifiable
threshold
Ameriprise Financial, Inc. (Chain 1) 0.000000 0.000000 0.000000%
Ameriprise Financial, Inc. Ameriprise Trust Company 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 0.000000 0.000000 0.000000%
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. Ameriprise Trust Company is wholly owned by Ameriprise Financial, Inc.
12. Date of Completion
30-Mar-2026
13. Place Of Completion
London, UK