TNS: Change in shareholding of principal shareholder (Nguyen Ngoc Hai)

- Name of issuer: Thong Nhat Flat steel Joint stock company
- Stock code: TNS
- Securities type: common stock
- Name of principal shareholder: Nguyen Ngoc Hai
- Number of shares held by the principal shareholder before transaction: 1,799,500 shares (9%)
- Number of shares acquired: 7,900 shares
- Total holding following transaction and total percentage following transaction: 1,807,400 shares (9.04%)
- Purpose of transaction: Investment
- Date of transaction: 08/08/2025