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: 318,300 shares (7.87%)
- Number of shares acquired: 5,500 shares
- Total holding following transaction and total percentage following transaction: 323,800 shares (8.01%)
- Purpose of transaction: increase holding rate 
- Date of transaction: 12/12/2023