Gulf Keystone Petroleum Ltd — Proxy Solicitation & Information Statement 2026

May 19, 2026

G K P

GULF KEYSTONE PETROLEUM

DNB

Form of Proxy - Annual General Meeting ("AGM") to be held on 19 June 2026

To view the Annual Report and Notice of Meeting online visit:

www.gulfkeystone.com/agm

To attend the AGM, visit http://meetnow.global/GKPAGM2026 from 1 P.M. (CEST) on 19 June 2026. Joining instructions can be found in the Notice of Meeting.

To be effective, all Forms of Proxy must be received by the Company's registrar DNB Bank ASA, Issuer Services ("DNB") by 1 P.M. (CEST) on 17 June 2026. Return by e-mail to vote@dnb.no or by post to: DNB Bank ASA, Issuer Services, Postboks 1600 Sentrum, 0021 Oslo, Norway

Explanatory Notes:

1. This Form of Proxy is for use by holders of GKP shares trading on Euronext Growth Oslo operated by the Oslo Stock Exchange ("OSE").
2. Please indicate, by placing 'X' in the appropriate space overleaf, how you wish your votes to be cast in respect of each of the Resolutions. Provide your shareholder name and sign in the spaces provided overleaf. Missing or unclear markings will be considered as 'For' if this form is duly signed and returned.
3. The 'Vote Withheld' option overleaf is provided to enable you to abstain on any particular Resolution. However, it should be noted that a 'Vote Withheld' is not a vote in law and will not be counted in the calculation of the proportion of the votes 'For' and 'Against' a Resolution.
4. Every holder has the right to appoint some other person(s) of their choice, who need not be a shareholder, as his proxy to exercise all or any of his rights, to attend, speak and vote on their behalf at the meeting. If you wish to appoint a person other than the Chairman, please insert the name of your chosen proxy holder in the space provided (see reverse).
5. Any alterations made in this form should be initialled.
6. The completion and return of this form will not preclude you from attending and voting your shares at the meeting online. Should you wish to attend the meeting and/or vote at the meeting, you must notify the Company's registrar Computershare Investor Services (Bermuda) Limited ("Computershare") by email at gulfkeystone@computershare.co.uk providing evidence of your shareholding. Once your details have been verified, Computershare will provide you with your unique login credentials. These credentials will grant access to the Computershare Online Platform, enabling you to view the AGM webcast and submit your vote online.

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Form of Proxy

Please complete this box only if you wish to appoint a third party proxy other than the Chairman. Please leave this box blank if you want to select the Chairman. Do not insert your own name(s).

Please use a black pen. Mark with an X inside ☐ the box as shown in this example.

Ordinary Resolutions

1. THAT BDO LLP be re-appointed as the Company's auditor to hold office from the close of this meeting until the close of the Company's next Annual General Meeting and that the Board of Directors be authorised to determine the auditor's remuneration.
2. THAT Mr David Thomas be and is hereby re-appointed as a Director in accordance with the Bye-laws.
3. THAT Ms Wanda Mwaura be and is hereby re-appointed as a Director in accordance with the Bye-laws.
4. THAT Mr Julien Balkany be and is hereby re-appointed as a Director in accordance with the Bye-laws.
5. THAT Ms Marianne Daryabegui be and is hereby re-appointed as a Director in accordance with the Bye-laws.
6. THAT Ms Catherine Krajicek be and is hereby re-appointed as a Director in accordance with the Bye-laws.
7. THAT Mr Jon Harris be and is hereby re-appointed as a Director in accordance with the Bye-laws.
8. THAT Mr Gabriel Papineau-Legris be and is hereby re-appointed as a Director in accordance with the Bye-laws.
9. THAT the Directors' Remuneration Report as set out in the Annual Report for the year ended 31 December 2025 be and is hereby approved.
10. THAT the Company be generally and unconditionally authorised to make market purchases of its Common Shares.

For	Against	Vote Withheld
☐	☐	☐
☐	☐	☐
☐	☐	☐
☐	☐	☐
☐	☐	☐
☐	☐	☐
☐	☐	☐

Name of shareholder in block letters

Signature

Date

DD/MM/YY

In the case of joint holders, only one holder need sign. In the case of a corporation, the Form of Proxy should be signed by a duly authorised official whose capacity should be stated, or by an attorney.