SD3: Nguyen Huu Bang is no longer principal shareholder

Nguyen Huu Bang is no longer a principal shareholder of Song Da 3 JSC with information as follows:
- Name of stock held: SD3
- Number of shares held by principal shareholder before transaction: 800,103 shares (5%)
- Number of shares disposed: 800 shares
- Total holding following transaction and total percentage holding following transaction: 799,303 shares (5%)
- Date of transaction: 12/01/2025