CST: Notice of record date for dividend payment in cash

1. Issuer: Cao Son Coal Joint Stock Company
2. Stock code: CST
3. Par value: VND 10,000/share
4. Record date: 29/05/2023
5. Ex-date: 26/05/2023
6. Reason:
     * Dividend payment in cash:
          - Exercise rate: 15%/share (01 share will receive VND 1,500)
          - Exercise date: 30/06/2023
          - Place of payment:
               + For deposited shares: securities companies where shares of shareholders have been deposited.
               + For undeposited shares: Cao Son Coal Joint Stock Company on working days from 30/06/2023. Securities certificate and Identification Card/Citizen Identification Card (original copy) are required.