HTC: Announcement of Ex-Dividend Record Date for Cash Dividends Set by Chairman Authorized by the Board of Directors

1. Date of board meeting or shareholders' meeting resolution or company decision: 2026/05/05 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 common stock dividends: Cash dividend of NTD 418,032,543; cash dividend of NTD 0.5 per share 4. Ex-rights (ex-dividend) trading date: 2026/06/22 5. Last date to register for transfer: 2026/06/23 6. Start date of suspension of transfer registration: 2026/06/24 7. End date of suspension of transfer registration: 2026/06/28 8. Ex-rights (ex-dividend) record date: 2026/06/28 9. Last date for bond conversion application: Not applicable 10. Start date of suspension of bond conversion: Not applicable 11. End date of suspension of bond conversion: Not applicable 12. Common stock cash dividend payment date: 2026/07/17 13. Other matters that should be specified: None