SET Announcements

-Translation- 1000/072/2005 March 30, 2005 The Stock Exchange of Thailand 62, Ratchadapisek Road, Klongtoey Bangkok 10110 Subject :Result of Converting Depository Receipts to BCP Ordinary shares No.4 Attention :President of The Stock Exchange of Thailand According to The Term of Title on The Rights and Duties of Depository Receipts in The Benefits of The Convertible Debentures of The Bangchak Petroleum Public Company Limited, issued by Siam DR Co.,Ltd., No. 1/2004, and Terms of Title on The Rights and Duties of Debenture Issuer and Subordinated convertible debenture holders of The Bangchak Petroleum Public Company Limited No.1/2004 with maturity date of year 2014, Depository Receipts holders have the right to redeem the depository receipts (BCP141A) to convertible debentures (BCP@A) and then to ordinary shares (BCP). Depository Receipts holders can convert the depository receipts on the 30th of March, June, September, and December every year. (Depository Receipts have been listed at Thai Bond Dealing Center.) The Fourth redemption was on March 30, 2005.There was 1 depository receipt holder, Thai nationality,redeemed 3,718 depository receipts to 3,718 convertible debentures with the par value of Baht 10,000, and then converted to 2,600,000 ordinary shares. (The convertible price was Baht 14.30) After such redemption, there were 257,377 existing depository receipts and the company's paid up capital will be increased from Baht 660,559,535 to Baht 663,159,535. Please be informed accordingly. Yours sincerely, -signed- (Patiparn Sukorndhaman) Senior Executive Vice President Accounting and Finance Corporate Planning and Investor Relation Office Tel: 0-2335-4584