[Ching-Hant-Gen] Participation in Investor Conference Hosted by Yuanta Securities

In accordance with Article 4, Section XX, Clause 12: Date of Event: May 22, 2026 (115/05/22)

1. Date of investor conference: May 22, 2026 2. Time of investor conference: 14:30 3. Location: Conference Room, 6F, Yuanta Financial Holding Building (No. 66, Section 1, Dunhua South Road, Taipei City) 4. Key message: The company has been invited to participate in an investor conference hosted by Yuanta Securities to explain its operational overview, financial status, and business-related information. 5. Other notes: Please check the Market Observation Post System (MOPS) for the investor conference schedule or relevant sections for related information. For complete financial and operational details, please visit the investor conference schedule or the specific conference section on the Market Observation Post System.