18 August 2026

Gulf Keystone Petroleum Ltd. (LSE & OSE: GKP)
(“Gulf Keystone”, “GKP”, “the Group” or “the Company”)

Notice of 2026 Half Year Results

Gulf Keystone, a leading independent operator and producer in the Kurdistan Region of Iraq, confirms it will be announcing its results for the half year ended 30 June 2026 on Tuesday 25 August 2026.

GKP’s management team will be hosting a presentation for analysts and investors at 10:00am (BST) via live audio webcast:

https://b.link/GKP_HY26

Sell-side analysts are requested to join the meeting via the dial-in details provided to them separately and ask questions verbally. Investors are encouraged to pre-submit written questions via the webcast registration page, with the opportunity to submit questions live during the presentation.

A recording of the presentation will be made available on GKP’s website.

Enquiries:

Gulf Keystone:	+44 (0) 20 7514 1400
Aaron Clark, Head of Investor Relations & Corporate Communications	[email protected]
FTI Consulting	+44 (0) 20 3727 1000
Ben Brewerton Nick Hennis	[email protected]

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