[ACON] Announcement on the change of general manager of subsidiary Kunshan ACON Electronics Co., Ltd.

1. Date of board resolution or occurrence of change: 2026/05/08 2. Type of personnel (Please enter Chairman or General Manager): General Manager 3. Name of former incumbent: Kuo Ming-Wei 4. Brief resume of former incumbent: General Manager of Kunshan ACON 5. Name of new incumbent: Huang Tien-Fu 6. Brief resume of new incumbent: General Manager of ACON Electronics 7. Nature of change (Please enter "resignation", "dismissal", "expiration of term", "job reassignment", "severance", "retirement", "decease" or "new appointment"): Job reassignment 8. Reason for change: Job reassignment 9. Effective date of new appointment: 2026/05/08 10. Other matters that should be specified (If the subject of the event or resolution is a public company or above, this material information also complies with Article 7, Paragraph 6 of the Enforcement Rules of the Securities and Exchange Act regarding matters that have a significant impact on shareholder equity or security prices): None