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

1. Issuer: Thai Nguyen Book Publishing Joint Stock Company
2. Stock code: STH
3. Par value: VND10,000/share
4. Record date: 30/06/2025
5. Ex-date: 27/06/2025
6. Reason:
     * Extraordinary General Meeting of Shareholders 2025
          - Exercise rate: 01 share - 01 voting rights
          - Exercise date: Expected in July 2025. The specific time will be announced later
          - Place: Thai Nguyen Book Publishing Joint Stock Company, No.65, Group 2, Hoang Van Thu street, Phan Dinh Phung ward, Thai Nguyen province
          - Agenda: Orientation of the Company's development strategy for the period 2025-2030 and other contents under the authority of the Extraordinary General Meeting of Shareholders