No. Esso/SET/009/53 August 2, 2010 Subject: Appointment of Director and Executive of Esso (Thailand) Public Company Limited To: President The Stock Exchange of Thailand Esso (Thailand) Public Company Limited ("Company") would like to notify the Stock Exchange of Thailand that Mr. Yodpong Sutatham has been appointed as the Director and Retail Manager of the Company with effect from August 1, 2010. Please be informed accordingly Your truly Esso (Thailand) Public Company Limited (Ms. Angsna Pirentorn) Company Secretary