SDD: Notice of transactions of principal shareholders

HaSTC notices transactions of principal shareholders as follows:

1. Name of principal shareholder: Petrovietnam Finance Join- stock Corporation (PVFC)

2. Name of stock held: SDD

3. Securities type: Common stock

4. Number of shares held by principal shareholders: 550,000 shares (15.07% of the charter capital)

5. Number of shares to be disposed: 250,000 shares

6. Total holding following transaction: 300,000 shares (8.22% of the charter capital)

7. Date of transaction: From 5/11/2008 to 4/12/2008

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