MTH: Result of transaction of principal shareholder (Lai Duy Nam)

- Name of issuer: Ha Dong Environment Public Service Joint Stock Company
- Stock code: MTH
- Securities type: common stock
- Name of principal shareholder: Lai Duy Nam
- Number of shares held by the principal shareholder before transaction: 695,515 shares (14.53%)
- Number of shares acquired: 323,996 shares
- Total holding following transaction and total percentage following transaction: 1,019,511 shares (21.29%)
- Purpose of transaction: stock purchase transactions
- Date of transaction: 10/11/2025