Union Jack Oil PLCLSE: UJO

Director Resignation

· Issued by Union Jack Oil PLC

3 June 2026

Union Jack Oil plc ("Union Jack" or the "Company") Director Resignation

Union Jack Oil plc (AIM: UJO), a UK and USA focused onshore hydrocarbon production, development and exploration company, announces the resignation of Graham Bull as a Non-Executive Director of the Company with immediate effect. Mr Bull will continue to undertake technical duties for the Company.

Mr Bull cited the detrimental effect attacks on the Board from certain media organisations has had on him and his family in his decision to resign.

For further information, please contact: Union Jack Oil plc

David Bramhill [email protected]

SP Angel Corporate Finance LLP Nominated Adviser and Joint Broker Matthew Johnson

Richard Hail Jen Clarke

+44 (0)20 3470 0470

Zeus Capital Limited

Joint Broker Antonio Bossi Simon Johnson George Duxberry

+44 (0)20 3829 5000

Gneiss Energy Limited

Financial Adviser

Jon Fitzpatrick

+44 (0)20 3983 9263

Harbour Access

USA Investor Relations

Jonathan Paterson

+1 (475) 477 9402

Union Jack Oil PLC on 6ix

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