<div id="readability-page-1"><div>RNS Number : 3659L Capricorn Energy PLC 12 December 2025 FOR IMMEDIATE RELEASE 12 December 2025CAPRICORN ENERGY PLC (&#34;Capricorn&#34; or &#34;the Company&#34;)Waldorf UpdateCapricorn notes the announcements made by Waldorf Production UK Plc (&#34;Waldorf&#34;) and Harbour Energy plc (&#34;Harbour&#34;) earlier today related to the purchase of the Waldorf group by a subsidiary of Harbour (&#34;Transaction&#34;). Capricorn has entered into a lock-up agreement in support of the Transaction and has agreed to compromise its unsecured claims against Waldorf for a payment of around $4m to $5m, which is the subject of a methodology agreed between Capricorn and certain of Waldorf's creditors. Capricorn will also retain the right to participate in potential residual claims.We note that completion of the Transaction is subject to various regulatory consents and is likely to require the sanction of a further restructuring plan.Enquiries to:<div><table><tbody><tr><td>Analysts / Investors</td><td></td></tr><tr><td>Nathan Piper, Commercial Director</td><td>Tel: 0131 475 3000</td></tr><tr><td>Media</td><td></td></tr><tr><td>Diana Milford, Corporate Affairs </td><td>Tel: 0131 475 3000</td></tr><tr><td>Georgia Edmonds/ Violet Wilson / Fergus Young, Camarco</td><td>Tel: 0203 757 4980</td></tr></tbody></table></div>About Capricorn Energy PLCCapricorn is a cash flow-focused energy producer, with an attractive portfolio of onshore development and production assets in the Western Desert. For more information, visit www.capricornenergy.com.This information is provided by RNS, the news service of the London Stock Exchange. RNS is approved by the Financial Conduct Authority to act as a Primary Information Provider in the United Kingdom. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact rns@lseg.com or visit www.rns.com.RNS may use your IP address to confirm compliance with the terms and conditions, to analyse how you engage with the information contained in this communication, and to share such analysis on an anonymised basis with others as part of our commercial services. For further information about how RNS and the London Stock Exchange use the personal data you provide us, please see our Privacy Policy. END UPDFIFEDFILFLIE</div></div>

Capricorn Energy PLC supports the acquisition of Waldorf Production UK Plc by Harbour Energy plc through a lock-up agreement. Capricorn agrees to settle unsecured claims against Waldorf for $4m-$5m and retains rights to potential residual claims. The transaction requires regulatory consents and a restructuring plan.

REG - Capricorn Energy PLC - Waldorf Update