Walsin (1608) to Hold Investor Conference on May 21, 2026

Announcement Date: 2026/05/20 Statement Date: 2026/05/19 Time: 15:05:54 Company Code: 1608 Company Name: Walsin Subject: Announcement regarding the investor conference to be held on May 21, 2026. Clause: 12

Details: 1. Date of investor conference: 2026/05/21 2. Time of investor conference: 14:00 3. Location: No. 30, Gaonan Highway, Renwu District, Kaohsiung City (Conference Room, 2nd Floor, Gaonan Plant) 4. Highlights: Public disclosure of Q1 2026 operating status. 5. Other remarks: None.

For full financial and operational details, please visit the Market Observation Post System (MOPS) website.