[Jie Min KY] Announcement of Ex-Dividend Record Date

1. Date of Board of Directors/Shareholders' meeting resolution or company decision: 2026/05/21 2. Type of ex-rights/dividend: Ex-dividend 3. Type and amount of cash dividend for common shares: Cash dividend: 645,236,920 TWD (5 TWD per share) 4. Ex-rights/dividend trading date: 2026/06/05 5. Last transfer date: 2026/06/08 6. Start date of transfer suspension: 2026/06/09 7. End date of transfer suspension: 2026/06/13 8. Ex-rights/dividend record date: 2026/06/13 9. Last conversion application date for bonds: Not applicable 10. Start date of bond conversion suspension: Not applicable 11. End date of bond conversion suspension: Not applicable 12. Payment date of cash dividend for common shares: 2026/06/30 13. Other matters to be stated: None