STH: New principal shareholder Sigma Group Investment Joint Stock Company

Sigma Group Investment Joint Stock Company has become a principal shareholder of Thai Nguyen Book Publishing Joint Stock Company with information as follows:
- Name of stock held: STH
- Number of shares held by principal shareholder before transaction: 0 shares (0%)
- Number of shares acquired: 4,166,000 shares
- Total holding following transaction and total percentage holding following transaction:4,166,000 shares (21.36%)
- Date of transaction: 15/08/2025