[Quanta] Company Invited to Investment Forum

In compliance with Article 4, Paragraph XX, Item 12. Date of occurrence: 2026/05/27. 1. Date of institutional investor conference: 2026/05/27. 2. Time of institutional investor conference: 14:00. 3. Location of institutional investor conference: Regent Taipei. 4. Summary of institutional investor conference: The company has been invited to participate in the "Taishin 2026 Q2 Global Investment Forum" organized by Taishin Securities to provide a review and outlook on the company's current operational status. 5. Other noteworthy matters: For detailed information, please refer to the Market Observation Post System (MOPS) and the company's website. Complete financial and business information can be found under the institutional investor conference list or investor conference section on the MOPS.