Ascent Resources PLC - Update on Energy Charter Treaty Claim

NOT FOR RELEASE, PUBLICATION OR DISTRIBUTION, DIRECTLY OR INDIRECTLY IN THE UNITED STATES, CANADA, JAPAN, SOUTH AFRICA OR IN ANY OTHER JURISDICTION IN WHICH SUCH PUBLICATION OR DISTRIBUTION WOULD BE UNLAWFUL. ANY FAILURE TO COMPLY WITH THESE RESTRICTIONS MAY CONSTITUTE A VIOLATION OF APPLICABLE SECURITIES LAWS. PLEASE SEE THE SECTION ENTITLED "IMPORTANT INFORMATION" TOWARDS THE END OF THIS ANNOUNCEMENT.

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION FOR THE PURPOSES OF REGULATION (EU) 596/2014 AS IT FORMS PART OF DOMESTIC LAW IN THE UNITED KINGDOM BY VIRTUE OF THE EU (WITHDRAWAL) ACT 2018 ("MAR"). UPON THE PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INSIDE INFORMATION IS NOW CONSIDERED TO BE IN THE PUBLIC DOMAIN.

23 September 2025

Ascent Resources plc

("Ascent" or the "Company")

Update on Energy Charter Treaty Claim

Ascent Resources Plc (LON: AST), the onshore US focused oil and gas company, is pleased to update investors in relation to the Company's ICSID registered Energy Charter Treaty claim against the Republic of Slovenia. The Company has been notified by the Arbitration Tribunal that they have no further questions for the parties; accordingly, no further substantive submissions are expected in the proceedings. In accordance with the 2022 ICSID Convention Arbitration Rules, a tribunal must aim to render its award within 240 days after the last submission in the proceedings. As the parties submitted their last submissions in July 2025, the Tribunal's award on merits is currently expected to be received towards the end of Q1 2026. Further updates will be announced as necessary.

Enquiries