SET Announcements

-Translation- 1000/171/2006 June 30, 2006 The Stock Exchange of Thailand 62, Ratchadapisek Road, Klongtoey Bangkok 10110 Subject : Result of Converting Depository Receipts to BCP Ordinary shares No. 9 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 Eighth redemption was on June 30, 2006. There was no depository receipt holder converted their depository receipts to convertible debentures. Therefore, the company had still remained 217,596 depository receipts and Baht 1,119,071,351 of the company's paid up capital. Please be informed accordingly. Yours sincerely, -signed- (Patiparn Sukorndhaman) Senior Executive Vice President Accounting and Finance Office of the Secretary to Board of Directors Tel: 0-2335-4584