SET Announcements

-TRANSLATION- No. 1000 / 059 / 2009 April 7, 2009 Subject : Result of the Seventeenth Voluntary Conversion of Depository Receipt for Common Shares of The Bangchak Petroleum Public Company Limited (BCP-DR1) on April 7, 2009 Attention : President of The Stock Exchange of Thailand Reference : Terms and Conditions of the Depository Receipt for Common Shares of Bangchak Petroleum Public Company Limited According to the Terms and conditions of Depository Receipt for Common Shares of The Bangchak Petroleum Public Company Limited (BCP-DR1) with respect to the rights of Voluntary Conversion, the BCP-DR1 Holders have the right to wholly or partly convert BCP-DR1 to Common Shares. The Voluntary conversion may be made on quarterly basis on the 5 th day of January, April, July, and October each year, of which, the Seventeenth Voluntary Conversion date is April 7, 2009 In addition, the BCP-DR1 holders have to notify the intention for the twelveth Voluntary Conversion during March 30, 2009 - April 3, 2009 via Bualuang Securities Public Company Limited, the Agent of the Company for Accepting Exercise of Conversion of BCP-DR1. The Company would like to inform that on April 7, 2009 there was no BCP-DR1 Holder converted their Depository Receipt to Common Shares of BCP. Therefore, the Company had still remained the Depository Receipts of 519,906,055 units. Please be informed accordingly. Yours sincerely, -signed- (Patiparn Sukorndhaman) Senior Executive Vice President Accounting and Finance Corporate Planning and Investor Relation Office Tel : 0-2335-4583 CC: 1. Managing Director, Siam DR Co., Ltd. 2. Managing Director, Thailand Securities Depository Co, Ltd. 3. Managing Director, Bualuang Securities Public Company Limited