Pursuant to Article 354, Paragraph 4 of the Commercial Code, the Company hereby announces that the reference date for determination of beneficial shareholders for holding the 11th Annual Meeting of Shareholders and the reference date for determination of right shareholders for cash dividends have been established.

- Below -

1. Date of determination of shareholders of record for holding the Annual Meeting of Shareholders: December 31, 2025

2. Determination date for cash dividend: December 31, 2025

December 15, 2025

SIMMTECH Co., Ltd.

CEO CHUN JEFFERY E , Young-goo Kim