Notice of Annual General Meeting

19 May 2026

Gulf Keystone Petroleum Ltd. (LSE & OSE: GKP)

(“Gulf Keystone”, “GKP”, “the Group” or “the Company”)

Notice of Annual General Meeting

Gulf Keystone, a leading independent operator and producer in the Kurdistan Region of Iraq, today publishes the Notice of Meeting for the Company’s upcoming 2026 Annual General Meeting (“AGM”).

The 2026 AGM will be held on Friday 19 June 2026 via webcast at 1 P.M. (CEST). Following the publication of the Company's Annual Report and Accounts for the year ended 31 December 2025 ("the Annual Report") on 2 April 2026, the Notice of AGM and accompanying proxy forms have today been distributed to shareholders, as required.

All documents are available to view on the dedicated AGM page of Gulf Keystone's website (www.gulfkeystone.com/agm) and have also been submitted to the UK’s National Storage Mechanism.

The AGM will be held via webcast which all Gulf Keystone shareholders are invited to view. Voting of the resolutions at the AGM will be conducted by a poll and we strongly encourage shareholders to vote on all resolutions in advance of the meeting.

Full details of the operation and arrangements for the AGM, as well as instructions for joining the webcast and voting, are available on Gulf Keystone's website (www.gulfkeystone.com/agm) and in the Notice of AGM.

Enquiries:

or visit: www.gulfkeystone.com

Notes to Editors:

Gulf Keystone Petroleum Ltd. (LSE & OSE: GKP) is a leading independent operator and producer in the Kurdistan Region of Iraq. Further information on Gulf Keystone is available on its website www.gulfkeystone.com