Gulf Keystone Petroleum Regulatory News (GKP)

24 May 2007 18:31

Gulf Keystone Petroleum Ld24 May 2007 TR-1: NOTIFICATION OF MAJOR INTERESTS IN SHARES (1). Identity of the issuer or the underlying issuer of existing shares to whichvoting rights are attached: Gulf Keystone Petroleum Ltd. 2. Reason for the notification (please tick the appropriate box or boxes) An acquisition or disposal of voting rights: Yes An acquisition or disposal of financial instruments which may result in the acquisition of shares already issued to which voting rights are attached: No An event changing the breakdown of voting rights: No Other (please specify): No 3. Full name of person(s) subject to the notification obligation: Gartmore Investment Limited 4. Full name of shareholder(s) (if different from 3.): See attached schedule 5. Date of the transaction and date on which the threshold is crossed or reachedif different): 11th May 2007 6. Date on which issuer notified: 14th May 2007 7. Threshold(s) that is/are crossed or reached: Below 5% 8. Notified details: A: Voting rights attached to shares Class/type of shares Situation previous to the TriggeringIf possible using the transaction ISIN CODE Number of shares Number of voting Rights BMG4209G1087 18,322,179 18,322,179 Resulting situation after the triggering transaction Class/type of shares Number of shares Number of voting rights % of voting rights if possible using the ISIN CODE Direct Direct Indirect Direct Indirect BMG4209G1087 276,755,108 276,755,108 4.652% B: Financial Instruments Resulting situation after the triggering transaction Type of Expiration Date Exercise/Conversion Number of voting % of voting financial Period/ Date rights that may be rights instrument acquired if the instrument is exercised/ converted. Total (A+B) Number of voting rights % of voting rights 276,755,108 4.652% 9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: Proxy Voting: 10. Name of the proxy holder: 11. Number of voting rights proxy holder will cease to hold: 12. Date on which proxy holder will cease to hold voting rights: 13. Additional information: All shares are held indirectly All figures are based on the Companies issued share capital of 12,873,553 as provided by Exshare Email contact RDU@Gartmore.com 14. Contact name: Allison Averono 15. Contact: 0207 782 2324 Report: S212 Current Holdings By Fund Manager 24 May 2007 Stock Line: B019X62 GULF KEYSTONE PETR COM STK USD0.01 Number Percentage of Issued of UK Shares Share Issued Registered BeneficialFund Managing Co. Held Capital Capital Owner Fund Owner Gartmore Investment Limited 6,177,723 2.232 % VIDACOS VOLANT THE ALPHAGEN VOLANTIS NOMINEES LTD FUND LIMITED A/C 2303 Gartmore Investment Limited 2,200,000 0.795 % BNY GIL CLT LST GARTMORE SMALLER A/C NOMS LTD COMPANIES TRUST PLC A/C LST Gartmore Investment Limited 461,391 0.167 % BNY GIL CLT 56640 GARTMORE GROWTH A/C NOMS LTD OPPORTUNITIES PLC A/C NWSC Gartmore Investment Limited 372,675 0.135 % BANK OF SICAV3 GARTMORE SICAV PAN BERMUDA EURO SMALLER LUXEMBOURG COMPANIES FUND Gartmore Investment Limited 3,386,744 1.224 % NORTRUST 54550 STRATHCLYDE PENSION NOMINEES FUND LIMITED __________ ________ 12,598,533 4.552 % 12,598,533 276,755,108 4.552% ========== =========== ======== End of Report This information is provided by RNS The company news service from the London Stock Exchange