[Tong Hsia] Announcement of Cash Dividend Record Date and Adjustment for FY2025 Earnings Distribution

1. Date of Board, Shareholders' Meeting Resolution or Company Decision: 2026/06/30 2. Type of Rights/Dividend Adjustment (please enter 'Rights Adjustment', 'Dividend Adjustment', or 'Rights and Dividend Adjustment'): Dividend Adjustment 3. Ordinary Share Dividend Type and Amount: Cash Dividend from Earnings (1) Original Dividend Type and Amount: Ordinary share cash dividend of NT$2,603,217,717, with NT$13.50 per share. (2) Adjusted Dividend Type and Amount: Ordinary share cash dividend of NT$2,603,217,717, with NT$13.41809587 per share. 4. Ex-Rights/Ex-Dividend Trading Date: 2026/07/16 5. Last Transfer Date: 2026/07/17 6. Transfer Suspension Start Date: 2026/07/18 7. Transfer Suspension End Date: 2026/07/22 8. Ex-Rights/Ex-Dividend Record Date: 2026/07/22 9. Final Application Date for Bond Conversion: Not applicable 10. Bond Conversion Suspension Start Date: Not applicable 11. Bond Conversion Suspension End Date: Not applicable 12. Ordinary Share Cash Dividend Payment Date: 2026/08/12 13. Other Matters to be Disclosed: The number of shares outstanding has increased due to bondholders applying for conversion into ordinary shares.