HMR: New principal shareholder - Nguyen Hai Duy

Nguyen Hai Duy has become a principal shareholder of Hoang Mai Stone Joint Stock Company with information as follows:
- Name of stock held: HMR
- Number of shares held by principal shareholder before transaction: 245,200 shares (4.37%)
- Number of shares acquired: 275,000 shares
- Total holding following transaction and total percentage holding following transaction:520,200 shares (9.27%)
- Date of transaction: 12/03/2025