Dear Shareholders,

PetroVietnam Technical Services Corporation respectfully sends to Valued Shareholders and interested Investors the  Announcement No. 1036/TB-PTSC dated June 20, 2026 regarding personnel matters (the assignment of duties as the person in charge of the Finance & Accounting Divisiont and concurrently as the Person in charge of Accounting).
, as attached.

Sincerely./.

Attachment:
1036/TB-PTSC