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 to be in charge of the Finance & Accounting Division and concurrently act as the person in charge of Accounting of PTSC).
, as attached.
Sincerely./.
Attachment:
 1036/PTSC-BTK