ข่าวแจ้งตลาดหลักทรัพย์

TRANSLATION No. 1000 / 080 / 2005 April 5, 2005 Subject : Result of the Conversion of CSDR on April 5, 2005 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 Bangchak Petroleum Public Company Limited (CSDR) with respect to the rights of Voluntary Conversion,the CSDR holders have the right to wholly or partly convert CSDR to common shares. The Voluntary Conversion may be made on quarterly basis on the 5th day of January, April, July, October each year, of which, the first Voluntary Conversion date is April 5, 2005. In addition, the CSDR holders have to notify the intention for the first Voluntary Conversion during March 29-April 4,2005 via Bualuang Securities Public Company Limited, the Agent of the Company for Accepting Exercise of the Conversion of CSDR. The Company would like to inform that on April 5, 2005, there was no CSDR holder converted their Depository Receipt to Common Shares of BCP.Therefore,the Company had still remained the depository receipts of 520,056,055 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