Gulf Keystone Petroleum: Notification of Major Holdings

On March 16, 2026, Gulf Keystone Petroleum Ltd disclosed a significant change in ownership. Optidob BV, based in Amsterdam, the Netherlands, has notified a combined voting rights stake of 5.17% in Gulf Keystone. This was a result of an acquisition of voting rights that occurred on March 13, 2026.

Optidob BV holds 5.03% directly, while Bloembeek CV, also of Amsterdam, holds an additional 0.14%, contributing to this total. This information was officially recognized on March 16. The shares involved are identified by the ISIN code BMG4209G2077, totaling 11,240,537 voting rights.

There are no financial instruments linked to this holding. Both Optidob BV and Bloembeek CV are under the umbrella of Stichting Beheer Beukenrode, though no direct control from any entity was indicated.