On July 21, 2026, PetroVietnam Technical Services Corporation (PTSC) received a notification of transaction in PVS shares from Mr. Tran Ho Bac, Member of the Board of Directors and President & CEO of PTSC. The key details of the notification are as follows,

- Name of individual conducting the transaction: Tran Ho Bac
- Current positions at PTSC: Member of the Board of Directors, President & CEO
- Securities code: PVS
- Number, ownership percentage of shares held before the transaction: 216,299 shares, (representing 0.042%)
- Number of shares registered to purchase: 100,000 shares.
- Purpose of transaction: For personal investment purposes.
- Method of transaction: Put-through transaction and order matching
- Expected transaction commencement date: 24/7/2026
- Expected transaction completion date: 21/8/2026.

Sincerely./.