DS3: New principal shareholder - Nguyen Van Thuong

Nguyen Van Thuong has become a principal shareholder of DS3 Joint Stock Company with information as follows:
- Name of stock held: DS3
- Number of shares held by principal shareholder before transaction: 511,900 shares (4.8%)
- Number of shares acquired: 524,800 shares
- Total holding following transaction and total percentage holding following transaction: 1,036,700 shares (9.72%)
- Date of transaction: 19/08/2025