Hwa Ku Announces Ex-Rights Date

1. Date of Board or Shareholders' Meeting Resolution or Company Decision: 06/24/2026 2. Type of Rights Adjustment (please enter 'Ex-Rights', 'Ex-Dividend', or 'Ex-Rights & Dividend'): Ex-Rights 3. Ordinary Share Dividend Type and Amount: Stock Dividend: NT$159,859,340 (50 bonus shares issued free of charge per 1,000 shares) 4. Ex-Rights (or Ex-Dividend) Trading Day: 07/22/2026 5. Final Transfer Date: 07/23/2026 6. Transfer Suspension Start Date: 07/24/2026 7. Transfer Suspension End Date: 07/28/2026 8. Ex-Rights (or Ex-Dividend) Benchmark Date: 07/28/2026 9. Final Date for Bond Conversion Application: 07/01/2026 10. Bond Conversion Suspension Start Date: 07/03/2026 11. Bond Conversion Suspension End Date: 07/28/2026 12. Ordinary Share Cash Dividend Payment Date: Not applicable 13. Other Matters to be Disclosed: (1) Final Purchase Date for Eligibility to Participate in Rights Issue: 07/21/2026 (2) The suspension period for conversion of the company's third and fourth domestic unsecured convertible bonds is from 07/03/2026 to 07/28/2026. Bondholders who wish to apply for conversion must complete the procedure with their securities broker by 07/01/2026 at the latest. (3) The listing date for the new share subscription warrants issued through capital increase is set for 08/14/2026.