MTH: Change in shareholding of principal shareholder (To Anh Minh)

- Name of issuer: Ha Dong Environment Public Service Joint Stock Company
- Stock code: MTH
- Securities type: common stock
- Name of principal shareholder: To Anh Minh
- Number of shares held by the principal shareholder before transaction: 1,090,963 shares (22.79%)
- Number of shares acquired: 31,200 shares
- Total holding following transaction and total percentage following transaction: 1,122,163 shares (23.44%)
- Purpose of transaction: increase ownership
- Date of transaction: 02/06/2026.