Nostrum Oil & Gas PLC announced the resignation of Mr. Chris Cox from the Board of Directors of the Company effective 31 May 2024. Mr. Cox is leaving the Nostrum Board due to increased professional commitments following his appointment as the Chief Executive Officer of Serica Energy plc effective 1 July 2024. As a consequence of Mr. Cox's resignation, AGM Resolution 5 "To reappoint Mr. Cox as a director of the Company" will be withdrawn from the resolutions to be put to the Company's AGM on 5 June 2024.

The Company will commence a search for an additional independent non-executive director to be appointed to the Board, taking into consideration Nostrum's Board diversity goals, and will make any further Board announcements as appropriate.