[VIA] Announcement regarding the Chairman setting the ex-dividend record date for cash dividends as authorized by the Board

1. Date of the board, shareholders meeting resolution or company decision: 2026/05/15 2. Type of ex-rights or ex-dividend: Ex-dividend 3. Type and amount of dividend for common shares: Cash dividend of NT$27,797,747, at NT$0.05 per share 4. Ex-dividend trading date: 2026/06/22 5. Last transfer date: 2026/06/23 6. Start date of suspension of transfer: 2026/06/24 7. End date of suspension of transfer: 2026/06/28 8. Ex-dividend record date: 2026/06/28 9. Last date for bond conversion application: N/A 10. Start date of suspension of bond conversion: N/A 11. End date of suspension of bond conversion: N/A 12. Cash dividend payment date for common shares: 2026/07/17 13. Other matters to be specified: None