PSN: Notice of record date for Dividend payment in cash

1. Issuer: PTSC Thanh Hoa Technical Services Company
2. Stock code: PSN
3. Par value: VND10,000/share
4. Record date: 30/09/2025
5. Ex-date: 29/09/2025
6. Reason:
     * Dividend payment in cash 2024:
          - Exercise rate: 4%/share (shareholders receive VND400 for every share they owwn)
          - Place of payment:
               + For deposited shares: securities companies where shares of shareholders have been deposited.
               + For undeposited shares: Finance and Accounting Department of PTSC Thanh Hoa Technical Services Company (Address: No. 268 Tran Nhat Duat, Truc Lam ward, Thanh Hoa province) on working days from 21/10/2025. 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.
          - Exercise date: 21/10/2025