2.     Stock code: SDT

3.     Securities type: Common stock

4.     Name of connected institution: Bao Viet Securities Investment Fund

5.     Name of PDMR/Director in the listed company: Mr. Dau Minh Lam

6.     Position in the listed company: Director

7.     Position of representative in  the connected institution company: General Manager

8.     Number of shares held by representative before transaction: 0 share (0%)

9.     Number of shares held by connected institution before transaction: 1,028,920 shares (4.88%)

10.  Number of shares registered for sale: 1,000,000 shares

11.  Number of shares registered for acquisition: 1,000,000 shares

12.  Number of shares disposed: 0 share

13.  Number of shares acquired: 0 share

14.  Total holding following transaction: 1,028,920 shares (4.88%)

15.  Reason of uncompleted transaction: not meet demand prices

16.  Start date of transaction: 30/05/2012

17.  End date of transaction: 30/07/2012.