GIS-KY to Participate in Fubon Securities' Virtual Investor Briefing

Release Date: June 27, 2026 Statement Date: June 26, 2026 Statement Time: 16:03:13 Company Code: 6456 Company Name: GIS-KY Purpose: Announcement that the company has been invited to participate in the virtual investor briefing hosted by Fubon Securities. Applicable Clause: Clause 12 Factual Date: June 29, 2026

Details: Falls under Clause 4, Item XX: 12 Factual Date: June 29, 2026

1. Date of Investor Briefing: June 29, 2026 2. Time of Investor Briefing: 2:00 PM 3. Location of Investor Briefing: Online Conference 4. Summary of Investor Briefing: The company will participate in the virtual investor briefing hosted by Fubon Securities, during which it will present financial figures and related information for the first quarter of 2026. 5. Additional Notes: Audio and video materials from the briefing will be uploaded after the event concludes. For complete financial and business information, please visit the 'Investor Briefing Schedule' or 'Investor Presentation' section on the Public Information Observation Station website.