No. Esso/SET/010/52 August 31, 2009 Subject: Interim Dividend Payment, Change of Managing Director, Director, Chairman of the Board and Re-election of Audit Committee members To: President of The Stock Exchange of Thailand Dear Sir, Esso (Thailand) Public Company Limited ("Company") would like to notify the Stock Exchange of Thailand that the Board of Directors' Meeting No. 4/2009 held on August 31, 2009 approved the significant matters as follows: 1. The payment of an interim dividend of Baht 0.25 (Twenty Five Satangs only) per share for all outstanding shares; the Record Date for ascertaining entitlement to interim dividend be on September 15, 2009; the share register book closing date for collecting the names of shareholders pursuant to the Securities and Exchange Act, Section 225 be on September 16, 2009; and the interim dividend be paid to all eligible shareholders on September 28, 2009. Note: The individual shareholders will not be able to claim a tax credit under Section 47 bis of the Revenue Code with respect to this dividend because the net profit from which this dividend is paid has been completely offset by a net loss carried forward from prior accounting periods not exceeding 5 years for corporate income tax purposes. 2. Appointment of Mr. Robert Michael Cooper as a Managing Director to replace Mr. Daniel E. Lyons, the resigning Managing Director, with effect from September 1, 2009; 3. Appointment of Mr. Robert Michael Cooper as a director and chairman of the Board of Directors to replace Mr. Daniel E. Lyons with effect from September 1, 2009; 4. Re-election of the Audit Committee members whose term will expire on October 18, 2009, namely, Khun Sompop Amatayakul, Khun Smit Tiemprasert and Khun Wattanee Phanachet, for another 2 years term with effect from October 19, 2009. Please be informed accordingly. Yours truly, Esso (Thailand) Public Company Limited ....................................................................... (Mr. Daniel E. Lyons)