[Formosa Advanced Technologies] Invited to Investor Conference Hosted by Grand Cathay Securities

Article IV, Section XX: 12 Date of Fact Occurrence: 115/06/11 (Taiwanese calendar, equivalent to 2026/06/11) 1. Date of Investor Conference: 115/06/11 2. Time of Investor Conference: 14:00 3. Location of Investor Conference: Online Conference 4. Key Information of Investor Conference: The company has been invited to an investor conference organized by Grand Cathay Securities to explain the company's financial and business overview. 5. Other Matters to be Noted: For registration, please contact Ms. Chen at Grand Cathay Securities at 02-25288272 or via email at cherry18@ibfs.com.tw. Complete financial and business information can be found in the list of investor conferences or under the investor conference section on the Market Observation Post System.