HGM: Notice of record date for dividend payment in cash (2nd time)

1. Issuer: Ha Giang Mineral and Mechanics JSC
2. Stock code: HGM
3. Par value: VND10,000/share
4. Record date: 25/11/2025
5. Ex-date: 24/11/2025
6. Reason:
     * Dividend payment in cash (2nd time):
          - Exercise rate: 85%/shares (01 share can receive VND8,500)
          - Exercise date: 18/12/2025
          - Place of payment:
               + For deposited shares: securities companies where shares of shareholders have been deposited.
               + For undeposited shares: Ha Giang Mineral and Mechanics JSC on working days from 18/12/2025 (address: No. 390, Nguyen Trai Street, Ha Giang 1 Ward, Tuyen Quang Province. Securities certificate and Identification Card (original copy) are required. In case of authorization, a proxy with certified seal of the local authority is further requested in addition to the mentioned above