[Dunji] Announcement of Ex-Dividend Date

1. Date of Board/AGM resolution: 2026/05/29 2. Type: Ex-dividend 3. Dividend type and amount: Cash dividend of 443,501,583 TWD, 4.2 TWD per share. 4. Ex-dividend trading date: 2026/06/16 5. Last transfer date: 2026/06/17 6. Book closure start date: 2026/06/18 7. Book closure end date: 2026/06/22 8. Ex-dividend record date: 2026/06/22 9. Last conversion date for bonds: N/A 10. Conversion suspension start date: N/A 11. Conversion suspension end date: N/A 12. Cash dividend payment date: 2026/07/08 13. Other notes: None.