POS: Notice of record date for a ballot

1. Issuer: PTSC Offshore Services Joint Stock Company
2. Stock code: POS
3. Par value: VND10,000/share
4. Record date: 28/02/2025
5. Ex-date: 27/02/2025
6. Reason:
     * For a ballot:
          - Exercise rate: 1:1 (01 share - 01 voting rights)
          - Content of the ballot: Approve the "Test Connection Service Contract for Block B - O Mon Project (Package No. 1)" between PTSC Offshore Services Joint Stock Company and Vietnam Oil and Gas Technical Services Joint Stock Corporation
          - Expected exercise date: From 07/03/2025 – 20/03/2025
          - Place: Office of PTSC Offshore Services Joint Stock Company, No.65A, 30/4 Street, Thang Nhat ward, Vung Tau City