[Topco] Invited to participate in the investor conference hosted by Fubon Securities

Compliance with Article 4, Paragraph XX: 12 Date of event: 115/05/21 (Taiwan calendar equivalent to 2026/05/21) 1. Date of investor conference: 115/05/21 2. Time of investor conference: 14:30 3. Location of investor conference: Fubon Securities Headquarters (7F, No. 6, Section 1, Zhongxiao West Road, Taipei City) 4. Brief summary of investor conference: Invited to participate in an investor conference hosted by Fubon Securities to explain the company's publicly disclosed financial and business information. 5. Other matters: None For full financial and business information, please check the investor conference list or relevant sections on the Market Observation Post System (MOPS).