TST: Mr. Hong acquired 2,600 shares

Telecommunication Technical Service JSC (HNX: TST) announce its Chair of the Board cum General Manager transaction results as follows:

1. Name of issuer: Telecommunication Technical Service JSC

2. Stock code: TST

3. Name of person discharging managerial responsibility /Director: Nguyen Duc Hong

4. Position: Chair of the Board cum General Manager

5. Securities type: Common stock

6. Number of shares held by the shareholder before transaction: 28,600 shares (0.6% of charter capital)

7. Nature of transaction: Acquisition through negotiation or continuous order matching

8. Number of shares registered for acquisition: 3,000 shares

9. Number of shares acquired: 2,600 shares

10. Total holding following transaction and total percentage holding following transaction: 31,200 shares (0.65% of charter capital)

11. Date of transaction: From 04/08/2011 to 29/08/2011.

HNX

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>   VND: Mr. Tien registered to dispose all shares (08/09/2011)

>   VAT: Mr. Kien transaction results (06/09/2011)

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>   BCI: Report on a share transfer in a subsidiary (06/09/2011)

>   VNM: Report on share buyback (06/09/2011)

>   SRC: Ms. Thu disposed all shares (06/09/2011)

>   SAM: Transaction of affiliated institution (06/09/2011)

>   PTL: Transaction of major shareholder (06/09/2011)

>   PET: Mr. Ky transaction results (06/09/2011)