TL4: Change in shareholding of principal shareholder (Lam Thanh Cuong)

- Name of issuer: Hydraulics Construction Corporation No.4
- Stock code: TL4
- Securities type: common stock
- Name of principal shareholder: Lam Thanh Cuong
- Number of shares held by the principal shareholder before transaction: 3,219,767 shares (21%)
- Number of shares acquired: 3,900 shares
- Total holding following transaction and total percentage following transaction: 3,223,667 shares (21.02%)
- Purpose of transaction: Buy more stocks for personal needs
- Date of transaction: 13/06/2025.