PERIODIC INFORMATION DISCLOSURE

To: HANOI STOCK EXCHANGE

1. Listed Organization:
TAN BINH CULTURE JOINT STOCK COMPANY

2. Transaction Name:
ALTA

3. Listed Stock Code:
ALT

4. Content:
Documents of the 2026 Annual General Meeting of Shareholders

5. Document Reference Link:
Documents of the 2026 Annual General Meeting of Shareholders are published on the website of Tan Binh Culture Joint Stock Company – ALTA: www.alta.com.vn (from April 01, 2026).

We are committed to taking responsibility before the law for the contents of this information disclosure.