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: 901,057 shares (11.26%)
- Number of shares disposed: 54,300 shares
- Total holding following transaction and total percentage following transaction: 846,757 shares (10.58%)
- Purpose of transaction: Personal financial needs
- Date of transaction: 08/07/2025.