STH: Result of transaction of connected person

- Name of issuer : Thai Nguyen Book Publishing Joint Stock Company
- Stock code: STH
- Number of shares held before the transaction: 1,560,300 shares (equivalent to 8%)
- Name of related person at the listed organization: Nguyen Thi Vinh
- Current position of the related person at the listed organization: Chair of the Board of Directors
- Current position of the related person at the trading organization: Chair of the Board of Directors
- Number of shares held by the related person: 1,969,500 shares (equivalent to 10.1%)
- Number of shares registered for sale: 1,560,300 shares
- Number of shares actually sold: 0 share
- Number of shares held after the transaction: 1,560,300 shares (equivalent to 8%)
- Reason for not completing the registered sale: Change in investment portfolio restructuring plan
- Transaction start date: September 4, 2025
- Transaction end date: October 2, 2025