Gulf Keystone Petroleum Regulatory News (GKP)

Not for release, publication or distribution, directly or indirectly, in whole or in part in or into the United States or any jurisdiction other than the United Kingdom and Bermuda where to do so would constitute a contravention of the relevant laws or regulations of such jurisdiction. This announcement (and the information contained herein) does not contain or constitute an offer to sell or the solicitation of an offer to purchase, nor shall there be any sale of securities in any jurisdiction where such offer, solicitation or sale would constitute a contravention of the relevant laws or regulations of such jurisdiction.

11 October 2016

Gulf Keystone Petroleum Ltd. (LSE: GKP)

("Gulf Keystone", "GKP", or "the Company")

US$250,000,000 13.0 per cent. Guaranteed Notes due 2017 (ISINs: Regulation S XS1056559245, Rule 144A XS1056559088) (the "Guaranteed Notes")

and

US$325,000,000 6.25 per cent. Convertible Bonds due 2017 (ISIN: XS0841237497, Common Code: 084123749) (the "Convertible Bonds")

Scheme Allocations

Gulf Keystone today announces that, pursuant to the scheme of arrangement (the "Scheme") in connection with the balance sheet restructuring transaction announced on 14 July 2016 (the "Restructuring"), it received valid and deemed elections for Reinstated Notes in respect of $10,920,000 in principal amount of the $250 million of Guaranteed Notes. Pursuant to the terms of the Restructuring, the Company will issue $100 million aggregate principal amount of Reinstated Notes to Guaranteed Noteholders, and will allot a total of 21,910,523,553 New Common Shares in connection with the Open Offer and the Debt Equitisation. The allocation of Reinstated Notes and New Common Shares to Guaranteed Noteholders will be calculated in accordance with the terms of the Scheme. A calculator is available on the Scheme website at https://sites.dfkingltd.com/gkp to assist Scheme Creditors in calculating their entitlements to Reinstated Notes and/or New Common Shares, as applicable. In order to use the calculator, each Scheme Creditor will require the seven digit Blocking Reference Number provided to its account holder by the applicable clearing system when the instruction was submitted.

The Reinstated Notes will be issued with ISIN Codes XS1497756095 (Regulation S) and XS1505549268 (Rule 144A). When admitted to trading, the New Common Shares will be registered with ISIN BMG4209G1087.

Capitalised terms used and not defined herein shall have the meanings set out in the Company's Balance Sheet Restructuring Transaction RNS of 14 July 2016.

D.F. King Limited acts as information agent in connection with the Scheme. Holders of Guaranteed Notes and/or Convertible Bonds with questions regarding the Scheme should contact:

For further information about the Restructuring, visit the Company's Restructuring microsite: http://www.gulfkeystone.com/restructuring

Disclaimer

This communication and the information contained herein is not an offer of securities for sale. Securities may not be offered or sold in the United States unless they are registered under the U.S. Securities Act of 1933, as amended (the "Securities Act"), or are exempt from registration thereunder. The Company has not registered and does not intend to register any of its securities under the Securities Act or to conduct a public offering in the United States or any other jurisdiction. Copies of this communication are not being, and should not be, distributed in or sent into the United States.

This communication is directed only at (i) persons who are outside the United Kingdom or (ii) persons who have professional experience in matters relating to investments falling within Article 19(2) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005, as amended from time to time (the Order) or (iii) high net worth entities, and other persons to whom it may lawfully be communicated, falling within Article 49(2) of the Order or (iv) certified high net worth individuals and certified and self-certified sophisticated investors as described in Articles 48, 50, and 50A respectively of the Order or (v) persons to whom this communication may otherwise be lawfully communicated (all such persons together being referred to as relevant persons). Any investment activity to which this communication relates will only be available to and will only be engaged with, relevant persons. Any person who is not a relevant person should not act or rely on this document or any of its contents.

This communication is distributed in any member state of the European Economic Area which applies Directive 2003/71/EC (this Directive together with any implementing measures in any member state, the Prospectus Directive) only to those persons who are qualified investors for the purposes of the Prospectus Directive in such member state, and such other persons as this document may be addressed on legal grounds, and no person that is not a relevant person or qualified investor may act or rely on this document or any of its contents.