[TECO] The Company is invited to participate in the GS Taiwan Computex & Corporate Day 2026 hosted by Goldman Sachs

Compliance with Article 4, Paragraph XX: 12. Date of occurrence: 2026/06/01. 1. Date of the investor conference: 2026/06/01. 2. Time of the investor conference: 09:00 AM. 3. Location of the investor conference: W Hotel. 4. Summary of the investor conference: The company has been invited to participate in the 'GS Taiwan Computex & Corporate Day 2026' hosted by Goldman Sachs to provide an update on the company's operational status. 5. Other matters: None. For complete financial and business information, please refer to the investor conference list or the investor conference section on the Market Observation Post System.