GSM: Notice of record date for dividend payment in cash

1. Issuer: Huong Son Hydro Power Joint Stocks Company
2. Stock code: GSM
3. Par value: VND10,000/share
4. Record date: 04/09/2025
5. Ex-date: 03/09/2025
6. Reason:
     * Dividend payment in cash:
          - Payment method: Cash dividend payment 2024
          - Exercise rate: 20%/share (shareholder will receive VND2,000 for each share they own)
          - Exercise date: 06/10/2025
          - Place of payment:
               + For deposited shares: securities companies where shares of shareholders have been deposited.
               + For undeposited shares: Huong Son Hydro Power Joint Stocks Company on working days from 06/10/2025. Citizen Identification Card or Identification Card (original copy) is required.