[CHT] Announcement of Dividend Distribution Record Date

1. Date of Board of Directors/Shareholders' Meeting resolution or company decision: June 5, 2026 2. Type of Ex-rights/Ex-dividend: Ex-dividend 3. Type and amount of common stock dividend: Cash dividend of 5.2 TWD per share from earnings. 4. Ex-dividend trading date: July 9, 2026 5. Last transfer date: July 10, 2026 6. Starting date for suspension of transfer: July 11, 2026 7. Closing date for suspension of transfer: July 15, 2026 8. Ex-dividend record date: July 15, 2026 9. Last conversion application date for bonds: N/A 10. Starting date for suspension of bond conversion: N/A 11. Closing date for suspension of bond conversion: N/A 12. Cash dividend payment date for common stock: August 7, 2026 13. Other matters to be specified: None