Transaction in Own Shares

Rhea-AI Summary

Diversified Energy Company (LSE:DEC, NYSE:DEC) executed a share buyback under its programme announced 20 March 2025, purchasing 30,623 ordinary shares on 11 November 2025 at a volume-weighted average price of $14.4983 per share through Mizuho Securities USA LLC.

The purchased shares will be cancelled; following cancellation the company will have 76,725,668 ordinary shares in issue and no shares held in treasury. The announcement includes a detailed schedule of individual trades and daily venue-level prices and volumes.

Positive

• 30,623 shares purchased under the buyback programme
• VWAP $14.4983 per share on 11 November 2025
• Post-cancellation issued share count 76,725,668 ordinary shares

Negative

• None.

Insights

Capital Markets Analyst

Small, routine repurchase: cancels 30,623 shares at a VWAP of $14.4983, trimming the share count modestly.

Diversified Energy Company PLC executed a tranche of its buyback under the programme announced on 20 March 2025, purchasing 30,623 ordinary shares on 11 November 2025 at a volume‑weighted average price of $14.4983. The purchased shares will be cancelled, leaving a post‑cancellation issued share count of 76,725,668. This action mechanically reduces share count and marginally increases per‑share metrics if all else equals, but the transaction size is small relative to the outstanding base.

The primary dependencies and risks are timing and scale: the announcement confirms execution and cancellation, so execution risk is low for this lot, but the economic impact depends on the total programme size and pace, which are not quantified here. Investors should note there are no treasury shares remaining and that the FCA denominator guidance is updated by the new issued share figure.

Watch for further buyback disclosures and programme pacing over the next quarters; near‑term market impact is likely limited given the small share volume purchased. Key monitorables include any future daily aggregate purchase disclosures and cumulative quantities relative to the announced programme on a quarterly or programme‑end horizon.

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 30,623 Ordinary Shares of 20 Pence each in the capital of the Company (the "Shares") in the market at a volume-weighted average price of $14.4983 per Share through Mizuho Securities USA LLC (MSUSA). The Shares acquired will, in due course, be cancelled.

Aggregated Information

Date of Purchase:	11 November 2025
Aggregate Number of Ordinary Shares Purchased:	30,623
Lowest Price Paid per Share (USD):	14.40
Highest Price Paid per Share (USD):	14.50
Volume-Weighted Average Price Paid per Share (USD):	14.4983

Following the cancellation of Shares, Diversified will have 76,725,668 Ordinary Shares of 20 Pence each in issue and no Ordinary Shares are held in treasury. This figure of 76,725,668 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:	11 November 2025
Investment firm:	Mizuho Securities USA LLC

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
394	$14.4967		$14.50		$14.49		ARCX
106	$14.5000		$14.50		$14.50		BATS
100	$14.5000		$14.50		$14.50		BATY
325	$14.5000		$14.50		$14.50		EDGX
200	$14.5000		$14.50		$14.50		EPRL
27,813	$14.4997		$14.50		$14.49		IEXG
94	$14.5000		$14.50		$14.50		MEMX
198	$14.4988		$14.50		$14.50		UBSA
593	$14.5000		$14.50		$14.50		XNAS
800	$14.4600		$14.50		$14.40		XNYS
Trading venue	Currency
NYSE	USD		$14.4983			30,623

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.

FAQ

How many shares did Diversified Energy (DEC) buy back on 11 November 2025?

Diversified bought back 30,623 ordinary shares on 11 November 2025.

What price did Diversified Energy (DEC) pay per share in the 11 November 2025 buyback?

The volume-weighted average price was $14.4983 per share; daily prices ranged from $14.40 to $14.50.

Will the shares repurchased by Diversified Energy (DEC) be cancelled or held in treasury?

The repurchased shares will be cancelled; after cancellation there will be no ordinary shares held in treasury.

What is Diversified Energy's (DEC) outstanding share count after the cancellation?

After cancellation the company will have 76,725,668 ordinary shares in issue.

Which broker executed Diversified Energy's (DEC) buyback trades on 11 November 2025?

Trades were executed through Mizuho Securities USA LLC as part of the buyback programme.

Where can I find the detailed trade-by-trade prices and venues for DEC's buyback on 11 November 2025?

The announcement includes a schedule listing daily VWAPs, highest/lowest prices and trading venues (e.g., ARCX, IEXG, XNYS) for the 11 November 2025 purchases.