[Nuvoton] Announcement from Key Subsidiary Nuvoton Technology Holdings Japan Regarding Change in General Manager

1. Date of Board Resolution or Change: June 26, 2026 2. Position: General Manager (Representative Director and President) 3. Former Executive's Name: Yoshitaka Kinoshita 4. Former Executive's Background: General Manager of Nuvoton Technology Holdings Japan (Representative Director and President) 5. New Executive's Name: Not Applicable 6. New Executive's Background: Not Applicable 7. Nature of Change: Job Restructuring 8. Reason for Change: Job Restructuring 9. Effective Date of Change: June 26, 2026 10. Additional Disclosures: This announcement may qualify as material information under Article 7, Clause 6 of the Enforcement Rules of the Securities and Exchange Act, as the subject entity is a publicly listed company or above. However, there are currently no significant impacts on shareholder rights or securities prices to report.