Optidob BV has notified Gulf Keystone Petroleum Ltd of a major holding, crossing a threshold on March 13, 2026, and now directly holds 5.03% of the voting rights, with Bloembeek CV holding an additional 0.14%, resulting in a combined total of 5.17% of voting rights representing 11,240,537 shares. This notification is due to an acquisition or disposal of voting rights.
Gulf Keystone Petroleum Ltd (GKP)
TR-1: notification of major holdings
16-March-2026 / 14:45 GMT/BST
TR-1: Standard form for notification of major holdings
NOTIFICATION OF MAJOR HOLDINGS(to be sent to the relevant issuer and to the FCA in Microsoft Word format if possible) i
1a. Identity of the issuer or the underlying issuer of existing shares to which voting rights are attached ii:
Gulf Keystone Petroleum Ltd
1b. Please indicate if the issuer is a non-UK issuer(please mark with an “X” if appropriate)
Non-UK issuer
x
2. Reason for the notification (please mark the appropriate box or boxes with an “X”)
An acquisition or disposal of voting rights
x
An acquisition or disposal of financial instruments
An event changing the breakdown of voting rights
Other (please specify) iii:
3. Details of person subject to the notification obligation iv
Name
Optidob BV
City and country of registered office (if applicable)
Amsterdam, the Netherlands
4. Full name of shareholder(s) (if different from 3.) v
Name
Optidob BV
Direct holder of 5.03 %
Bloembeek CV
Direct holder of 0.14%
City and country of registered office (if applicable)
Amsterdam, the Netherlands
5. Date on which the threshold was crossed or reached vi:
13-03-2026
6. Date on which issuer notified (DD/MM/YYYY):
16-03-2026
7. Total positions of person(s) subject to the notification obligation
% of voting rights attached to shares (total of 8. A)
% of voting rights through financial instruments (total of 8.B 1 + 8.B 2)
Total of both in % (8.A + 8.B)
Total number of voting rights held in issuer (8.A + 8.B) vii
Resulting situation on the date on which threshold was crossed or reached
5.17%
5.17%
11,240,537
Position of previous notification (if
applicable)
8. Notified details of the resulting situation on the date on which the threshold was crossed or reached viii
A: Voting rights attached to shares
Class/type of shares
ISIN code (if possible)
Number of voting rights ix
% of voting rights
Direct
(DTR5.1)
Indirect
(DTR5.2.1)
Direct
(DTR5.1)
Indirect
(DTR5.2.1)
BMG4209G2077
11,240,537
5.17%
SUBTOTAL 8. A
11,240,537
5.17%
B 1: Financial Instruments according to DTR5.3.1R (1) (a)
Type of financial instrument
Expiration date x
Exercise/ Conversion Period xi
Number of voting rights that may be acquired if the instrument is
exercised/converted.
% of voting rights
SUBTOTAL 8. B 1
B 2: Financial Instruments with similar economic effect according to DTR5.3.1R (1) (b)
Type of financial instrument
Expiration date x
Exercise/ Conversion Period xi
Physical or cash
Settlement xii
Number of voting rights
% of voting rights
SUBTOTAL 8.B.2
9. Information in relation to the person subject to the notification obligation (please mark the
applicable box with an “X”)
Person subject to the notification obligation is not controlled by any natural person or legal entity and does not control any other undertaking(s) holding directly or indirectly an interest in the (underlying) issuer xiii
Full chain of controlled undertakings through which the voting rights and/or the financial instruments are effectively held starting with the ultimate controlling natural person or legal entity (please add additional rows as necessary) xiv
X
Name xv
% of voting rights if it equals or is higher than the notifiable threshold
% of voting rights through financial instruments if it equals or is higher than the notifiable threshold
Total of both if it equals or is higher than the notifiable threshold
Stichting Beheer Beukenrode
Bloembeek CV
0.14%
0.14%
Optidob BV
5.03%
5.03%
10. In case of proxy voting, please identify:
Name of the proxy holder
The number and % of voting rights held
The date until which the voting rights will be held
11. Additional information xvi
Place of completion
Amsterdam
Date of completion
16-03-2026
Dissemination of a Regulatory Announcement, transmitted by EQS Group.
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