Pursuant to Point b, Clause 1, Article 37 of the Regulations on Listing and Trading of Listed Securities promulgated under Decision No.17/QD-HDTV dated March 31, 2022 of the Members' Council of the Vietnam Stock Exchange, the Hochiminh Stock Exchange decided to maintain the warning status for VOS shares.

Reason: The after-tax profit of parent company in 2021 was 490.30 billion dongs, and the undistributed after-tax profit at 12/31/2021 was -420.58 billion dongs.