DSH: Result of transaction of share purchase rights of connected person (Ms. Nguyen Thi Hong Thao)

- Name of issuer: Dong Son Infrastructure Investment Joint Stock Company
- Stock code: DSH
- Name of person connected with a person discharging managerial responsibility (PDMR)/Director: Ms. Nguyen Thi Hong Thao
- Name of PDMR/Director in the listed company: Mr. Lai Thanh Nam
- Position in the listed company: member of the BOD
- Relation between connected person and PDMR/Director: wife
- Number of shares held by connected person before transaction: 50,000 shares
- Number of share purchase rights held by connected person: 90,000 rights
- Number of rights disposed: 90,000 rights
- Total holding of share purchase rights following transaction: 0 rights
- Number of shares to be acquired corresponding to the holding of share purchase rights after transaction: 90,000 shares
- Start date of transaction: 11/11/2025
- End date of transaction: 12/11/2025