Din Hsuan-KY Announces Change in Internal Audit Supervisor

1. Position Affected (Please specify: Spokesperson, Acting Spokesperson, Key Operating Officer (e.g., CEO, COO, CMO, CSO), Financial Officer, Accounting Officer, Corporate Governance Officer, CISO, R&D Head, Internal Audit Supervisor, or Litigation/Non-litigation Agent): Internal Audit Supervisor

2. Date of Change: July 3, 2026 (R.O.C. Year 115)

3. Former Officer's Name, Title, and Resume: Lin Hsiu-Chuan / Internal Audit Supervisor

4. New Officer's Name, Title, and Resume: Not yet appointed by the Board; duties temporarily assumed by an acting officer

5. Nature of Change (Please select: Resignation, Reassignment, Severance, Retirement, Death, New Appointment, or Removal): Resignation

6. Reason for Change: Personal career planning

7. Effective Date: July 5, 2026 (R.O.C. Year 115)

8. Additional Disclosures: The new Internal Audit Supervisor will be formally announced following appointment by the upcoming Board of Directors meeting.