DCF: Result of transaction of Directors, PDMR (Duong Dinh Tam)

- Name of issuer: Design and Construction Join Stock Company No.1
- Stock code: DCF
- Name of person discharging managerial responsibility /Director: Duong Dinh Tam
- Position in the listed company: Chief Financial Officer
- Number of shares held by the shareholder before transaction: 0 shares (0% of charter capital)
- Number of shares registered to be acquired: 1,000,000 shares
- Type of transaction: Purchase shares from the private placement according to the List in Resolution No. 17/2025/NQ-HDQT dated July 2, 2025, of the Board of Directors of Design and Construction Join Stock Company No.1 and approved by the State Securities Commission
- Number of shares acquired: 1,000,000 shares
- Par value: VND10,000,000,000
- Number of shares held by the shareholder after transaction: 1,000,000 shares (1.89%)
- Nature of transaction: Purchase of shares from the issuer’s private placement
- Date of transaction: September 11, 2025.