Purchase of Shares

Tullow Oil PLC 28 March 2007 Tullow Oil PLC 28 March 2007 Tullow Oil plc ('Tullow' or 'the Company') The Company was notified on 27 March 2007 that the trustee of the Tullow Oil Employee Trust (the 'Trust') made the following purchases of Tullow Oil ordinary shares of 10p each ('Ordinary Shares'): TRADE DATE SHARES PURCHASED PRICE PER SHARE 26 March 2007 500,000 369.95p The Trust is a discretionary trust established by the Company for the benefit of employees of Tullow Oil plc and its subsidiaries. The shares were acquired to hedge the awards made under the Company's share incentive plans. The total holding of the Trust following this transaction is 1,500,000 Ordinary Shares representing 0.209% of the Company's issued share capital. The executive directors of Tullow are included as potential beneficiaries under the Trust and are deemed to be interested in all the shares held by the Trust for the purposes of Section 324 of the Companies Act 1985. Inquiries Graham Martin + 44 0208 996 1000 This announcement has been issued through the Companies Announcement Service of The Irish Stock Exchange This information is provided by RNS The company news service from the London Stock Exchange

Companies

Tullow Oil (TLW)
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