KCB: Change in shareholding of principal shareholder (Dinh Huy Chien)

- Name of issuer: Cao Bang Mineral And Metallurgical Joint Stock Company
- Stock code: KCB
- Securities type: common stock
- Name of principal shareholder: Dinh Huy Chien
- Number of shares held by the principal shareholder before transaction: 761,957 shares (9.52%)
- Number of shares disposed: 62,500 shares
- Total holding following transaction and total percentage following transaction: 699,457 shares (8.74%)
- Purpose of transaction: Personal financial needs
- Date of transaction: 10/07/2025.