[Nuvoton] Announcement of Director Election at Key Subsidiary Nuvoton Technology Holdings Japan

1. Date of Change: 2026/06/26 2. Category of Appointed or Changed Personnel (e.g., Legal Person Director, Legal Person Supervisor, Independent Director, Individual Director, or Individual Supervisor): Individual Director 3. Former Position and Name: Director: Jason Jong, Yuan-Mao Su, Hsiu-Fen Lai 4. Former Personnel Resume: Jason Jong, Chairman and CEO of Winbond Electronics Corporation; Yuan-Mao Su, Chairman of Nuvoton Technology Corporation; Hsiu-Fen Lai, Chief Financial Officer of Nuvoton Technology Corporation 5. New Position and Name: Director: Jason Jong, Yuan-Mao Su, Hsiu-Fen Lai 6. New Personnel Resume: Jason Jong, Chairman and CEO of Winbond Electronics Corporation; Yuan-Mao Su, Chairman of Nuvoton Technology Corporation; Hsiu-Fen Lai, Chief Financial Officer of Nuvoton Technology Corporation 7. Nature of Change (e.g., Resignation, Removal, Term Expiration, Death, or New Appointment): Term Expiration 8. Reason for Change: Term Expiration 9. Number of Shares Held by New Appointee at Time of Election: 0 10. Previous Term (e.g., xx/xx/xx ~ xx/xx/xx): 2025/06/25 ~ 2026/06/26 11. Effective Date of New Appointment: 2026/06/26 12. Director Turnover Rate During Same Term: Not Applicable 13. Independent Director Turnover Rate During Same Term: Not Applicable 14. Supervisor Turnover Rate During Same Term: Not Applicable 15. Is the Change Involving One-Third or More of Directors? (Please enter Yes or No): No, full board re-election due to term expiration 16. Other Matters to be Disclosed (If the subject of the event or resolution is a publicly issued company, this significant information also complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters significantly affecting shareholder rights or securities prices): None