SGD: Change in shareholding of principal shareholder (Vu Thanh Thuy)

- Name of issuer: Educational Book JSC in Ho Chi Minh City
- Stock code: SGD
- Securities type: common stock
- Name of principal shareholder: Vu Thanh Thuy 
- Number of shares held by the principal shareholder before transaction: 282,500 shares (6.99%)
- Number of shares acquired: 3,400 shares
- Total holding following transaction and total percentage following transaction: 285,900 shares (7.07%)
- Purpose of transaction: increase ownership rate 
- Date of transaction: 20/07/2023