[Quanta] The Company is invited to participate in an investment forum

Compliance with Article 4, Paragraph XX: 12. Date of occurrence: 115/06/05. 1. Date of investor conference: 115/06/05. 2. Time of investor conference: 09:00 AM. 3. Location of investor conference: W Taipei. 4. Summary of the investor conference: The company has been invited to participate in the "Citi's 2026 Taiwan Tech Conference" hosted by Citi Securities to provide a review and outlook on the company's current operations. 5. Other matters: For detailed information, please refer to the Market Observation Post System and the company's website. For complete financial and business information, please check the investor conference list or the investor conference section on the Market Observation Post System.