Substantial ShareholderUpdate

4 May 2007 07:01

Roc Oil Company Limited04 May 2007 3 May 2007 Roc Oil Company Limited ("The Company") Substantial Shareholder Notice The Company has been notified of the following change in substantialshareholding: - As at 16 March 2007, Merrill Lynch & Co Inc and its affiliates held 18,929,946 fully paid ordinary shares in the Company, representing 6.35% of thetotal issued share capital of the Company. For further information please contact:Dr John Doran onTel: +61-2-8356-2000Fax: +61-2-9380-2635Email: jdoran@rocoil.com.auOr visit ROC's website: www.rocoil.com.au Dr Kevin HirdGeneral Manager Business DevelopmentTel: +44 (0)207 586 7935Fax: +44 (0)207 722 3919Email: khird@rocoil.com.au Nick LambertBell Pottinger Corporate & FinancialTel: +44 (0)207 861 3232 This information is provided by RNS The company news service from the London Stock Exchange