10 September 2026

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

GKP shares trade ex-dividend today

Gulf Keystone announces that its shares will trade ex-dividend as from today, 10 September 2026, reflecting the recently declared interim dividend as detailed below.

Distribution amount	$0.046 per Common Share
Declared currency	USD
Date of approval	24 August 2026
Ex-dividend date	10 September 2026
Record date	11 September 2026
Payment date	28 September 2026

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

This information is published in accordance with the requirements of the Euronext Growth Oslo Rule Book Part II.