CTN: Mr. Nguyen Thanh Hoan bought 11,900 shares

Underground Works Construction JSC (HNX: CTN) announces the result of transactions of Directors, PDMR (Mr. Hoan) as follows:

1. Name of issuer: Underground Works Construction JSC

2. Stock code: CTN

3. Name of person discharging managerial responsibility /Director: Mr. Nguyen Thanh Hoan

4. Position: Director-cum-General Manager

5. Securities type: Common stock

6. Number of shares held by the shareholder before transaction: 96,780 shares (1.528381%)

7. Number of shares registered for acquisition: 38,000 shares

8. Number of shares acquired: 11,900 shares

9. Total holding following transaction and total percentage holding following transaction: 108,680 shares (1.716309%)

10. Date of transaction: From 06/06/2011 to 06/07/2011.

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