[Winbond] Announcement of Board of Directors' Election of Chairman

1. Date of board resolution or change: 2026/05/29. 2. Position: Chairman. 3. Name of predecessor: Arthur Chiao. 4. Resume of predecessor: Chairman and CEO of Winbond Electronics Corp. 5. Name of successor: Arthur Chiao. 6. Resume of successor: Chairman and CEO of Winbond Electronics Corp. 7. Reason for change: Expiration of term. 8. Cause of change: Election of Chairman after full board re-election. 9. Effective date: 2026/05/29. 10. Other: None.