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 328,781 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 $13.402 per Share through Mizuho Securities USA LLC (MSUSA). The Shares acquired will, in due course, be cancelled.

Aggregated Information

Date of Purchase:	June 29, 2026
Aggregate Number of Shares Purchased:	328,781
Lowest Price Paid per Share (USD):	13.10
Highest Price Paid per Share (USD):	13.56
Volume-Weighted Average Price Paid per Share (USD):	13.402

Following the cancellation of Shares, Diversified will have 71,707,365 shares of common stock, in issue and no shares of common stock is held in treasury. This figure of 71,707,365 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 number of ordinary shares acquired	Daily volume weighted average price paid	Daily highest price paid per share		Daily lowest price per share		Trading Venue
12,993	13.4225	$13.55		$13.19		ARCX
8,246	13.4392	$13.55		$13.10		ASPN
8,836	13.4804	$13.56		$13.27		BAML
6	13.5400	$13.54		$13.54		BARX
10,971	13.4373	$13.55		$13.21		BATS
2,857	13.3782	$13.53		$13.22		BATY
1,700	13.4496	$13.54		$13.26		EDGA
4,183	13.4202	$13.55		$13.20		EDGX
400	13.5500	$13.55		$13.55		HRTF
305	13.5400	$13.54		$13.54		ICBX
171,932	13.3530	$13.55		$13.10		IEXG
1,073	13.3916	$13.55		$13.10		JPMX
7,400	13.4188	$13.55		$13.28		JSJX
1,075	13.5140	$13.54		$13.41		LEVL
866	13.4719	$13.55		$13.43		MEMX
700	13.5433	$13.55		$13.54		MSPL
3,321	13.4459	$13.54		$13.27		SGMT
19,765	13.4444	$13.56		$13.10		UBSA
420	13.5400	$13.54		$13.54		VFMI
1,600	13.3947	$13.52		$13.22		XBOS
400	13.4420	$13.51		$13.42		XCIS
48,421	13.4654	$13.55		$13.20		XNAS
21,311	13.4419	$13.55		$13.21		XNYS

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.