QST: Report on ownership changes of major shareholders holding 5% or more shares - Mr. Vu The Anh

1. Name of shareholder: Vu The Anh
2. Name of connected person: Dong Thi Oanh

       Relationship between connected person and shareholder: Mother
       Shareholding rate: 2.26%

3. Name of connected person: Vu Kim Yen

       Relationship between connected person and shareholder: Older sister
       Shareholding rate: 2.16%

4. Name of connected person: Nguyen Thi Huong Giang  

       Relationship between connected person and shareholder: Wife
       Shareholding rate: 0.91%

5. Stock code: QST
6. Number and rate of shareholding before transaction: 0
7. Number of shares received: 330,000 shares
8. Number and rate of shareholding after transaction: 330,000 shares (10.02%)
9. Trading date: 15/03/2023
10. Number and rate of shareholding/warrants which are held by connected persons: 172,640 shares (5.33%)
11. Number and rate of shareholding which are held by connected persons after transaction: 502,640 shares (15.51%)