TIE: Change in shareholding of principal shareholder (Le Thi Thu Ha)

- Name of issuer: Telecommunications Industry Electronics Joint Stock Company
- Stock code: TIE
- Securities type: common stock
- Name of principal shareholder: Le Thi Thu Ha
- Number of shares held by the principal shareholder before transaction: 570,600 shares (5.96%)
- Number of shares acquired: 12,400 shares
- Total holding following transaction and total percentage following transaction: 583,000 shares (6.09%)
- Purpose of transaction: Investment
- Date of transaction: 21/05/2026.