SD6: Notice of record date for Extraordinary General Meeting of Shareholders 2025

1. Issuer: Song Da 6 Joint Stock Company
2. Stock code: SD6
3. Par value: VND10,000/share
4. Record date: 09/06/2025
5. Ex-date: 06/06/2025
6. Reason:
     * Extraordinary General Meeting of Shareholders 2025
          - Exercise rate: 01 share - 01 voting rights
           - Exercise date: (Expected)  09/07/2025 (the specific date will be announced later)
          - Place: 10th floor conference hall, Commercial House, Van Khe Urban Area, La Khe Ward, Ha Dong, Hanoi.
          - Agenda: The General Meeting of Shareholders approved the contract and transaction between the Company and related parties, shareholders of Song Da Corporation, regarding the construction contract of Bac Ai Pumped Storage Hydropower Project.