Rong Hui-KY Chuang Announces Dividend Record Date and Cash Dividend Payment Date

1. Date of Board of Directors, Shareholders' Meeting Resolution or Company Decision: June 22, 2026 (ROC Year 115) 2. Type of Ex-Rights/Ex-Dividend (please enter 'Ex-Rights', 'Ex-Dividend', or 'Ex-Rights and Ex-Dividend'): Ex-Dividend 3. Ordinary Share Dividend Type and Amount: Cash Dividend of NT$103,120,000 (NT$5 per share) 4. Ex-Dividend Trading Day: July 8, 2026 (ROC Year 115) 5. Last Transfer Date: July 9, 2026 (ROC Year 115) 6. Start Date of Transfer Suspension: July 10, 2026 (ROC Year 115) 7. End Date of Transfer Suspension: July 14, 2026 (ROC Year 115) 8. Ex-Dividend Record Date: July 14, 2026 (ROC Year 115) 9. Final Date for Bond Conversion Application: Not Applicable 10. Start Date of Bond Conversion Suspension: Not Applicable 11. End Date of Bond Conversion Suspension: Not Applicable 12. Ordinary Share Cash Dividend Payment Date: July 31, 2026 (ROC Year 115) 13. Other Matters to be Stated: None