[Sunny Semiconductor] Invited to Participate in the Singapore Non-Deal Roadshow Hosted by Cathay Securities

In compliance with Article 4, Clause XX: 12 Date of occurrence: May 25, 2026

1. Date of investor briefing: May 25, 2026 ~ May 27, 2026 2. Time of investor briefing: 09:00 3. Location of investor briefing: Singapore 4. Summary of investor briefing: Invited to participate in the "Singapore Non-Deal Roadshow" hosted by Cathay Securities, where the company's operational performance for the first quarter of 2026 will be explained. 5. Other notes: None

For complete financial and operational information, please refer to the investor briefing schedule or items on the Market Observation Post System (MOPS).