SDD: Change in shareholding of principal shareholder (Do Nguyen Huu)

- Name of issuer: Song Da Investment and Construction Joint Stock Company
- Stock code: SDD
- Securities type: common stock
- Name of principal shareholder: Do Nguyen Huu
- Number of shares held by the principal shareholder before transaction: 1,587,200 shares (9.92%)
- Number of shares acquired: 20,000 shares
- Total holding following transaction and total percentage following transaction: 1,607,200 shares (10.04%)
- Date of transaction: 10/01/2023
- Purpose of transaction: Investment