1. Name of individual performing the transaction: Dang Van Tuyen

– Internal shareholders

2. Name of key personnel (related internal person):

3. Securities trading code: S55

4. Number of shares held before trading: 186,700 shares (1.86%)

5. Number of shares bought: 100,000 shares

6. Number of shares held after trading: 286,700 shares (2.86%)

7. Trading method: Order matching or agreement

8. Time of transaction execution:

– Start date: April 20, 2019

– End date: April 23, 2019