[C-Tech] Participation in the investor conference hosted by Fubon Securities

Compliance with Article 4, Paragraph XX: 12. Date of occurrence: 05/28/2026. 1. Date of conference: 05/28/2026. 2. Time: 14:30. 3. Location: Conference Room, 5F, Fubon Nanjing Building (No. 111, Sec. 2, Nanjing E. Rd., Taipei City). 4. Summary: The company was invited to participate in the investor conference hosted by Fubon Securities. Priority is given to those invited by Fubon Securities. 5. Other notes: None. For complete financial and business information, please refer to the investor conference section on the Market Observation Post System.