Crossroads Well, Oklahoma, USA Update

Summary by AI ^BETAClose X

Union Jack Oil plc has announced an update on the Crossroads well in Garvin County, Oklahoma, USA, in which it holds a 43% interest. Despite encountering good hydrocarbon shows across several intervals, the well has been deemed non-commercial after testing and will be plugged and abandoned.

Disclaimer*

Union Jack Oil PLC

19 June 2026

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018 ("MAR"), and is disclosed in accordance with the Company's obligations under Article 17 of MAR.

Union Jack Oil plc

("Union Jack" or the "Company")

Crossroads Well, Garvin County, Oklahoma, USA Update

Union Jack Oil plc (AIM: UJO), a UK and USA focused onshore hydrocarbon, production, development, exploration and investment company announces that, further to the Company's announcement on 15 May 2026, the Company is providing an update on the Crossroads well, Garvin County, Oklahoma USA. Union Jack holds a 43% interest in this well.

The Crossroads well encountered good hydrocarbon shows at several levels from the Hoxbar down to the Basal McLish intervals. Four intervals with production potential were perforated and tested.

Following testing the well has been deemed non-commercial and will be plugged and abandoned in due course.

For further information, please contact:

Union Jack Oil plc info@unionjackoil.com

David Bramhill

SP Angel Corporate Finance LLP +44 (0)20 3470 0470

Nominated Adviser and Joint Broker

Matthew Johnson

Richard Hail

Jen Clarke

Zeus Capital Limited +44 (0)20 3829 5000

Joint Broker

Antonio Bossi

Simon Johnson

George Duxberry

Gneiss Energy Limited + 44 (0)20 3983 9263

Financial Adviser

Jon Fitzpatrick

Harbour Access +1 (475) 477 9402

USA Investor Relations

Jonathan Paterson

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