[KMC Chain] Announcement of the Company's Q1 2026 Cash Dividend Ex-dividend Record Date

1. Date of Board of Directors' or Shareholders' Meeting resolution or company decision: 2026/05/13 2. Type of ex-rights/ex-dividend (please fill in "ex-rights", "ex-dividend" or "ex-rights and ex-dividend"): Ex-dividend 3. Type and amount of cash dividends distributed for common shares: Common shares cash dividend NTD 135,404,000 Approximately NTD 1.07462833 distributed per share. 4. Ex-rights (ex-dividend) trading date: 2026/09/17 5. Last date for share transfer registration: 2026/09/18 6. Beginning date for suspension of share transfer registration: 2026/09/19 7. Ending date for suspension of share transfer registration: 2026/09/23 8. Ex-rights (ex-dividend) record date: 2026/09/23 9. Last date for bond conversion application: 2026/08/27 10. Beginning date for suspension of bond conversion: 2026/08/31 11. Ending date for suspension of bond conversion: 2026/09/23 12. Common shares cash dividend payment date: 2026/10/16 13. Other matters that should be specified: None.