Sanchio Den Announces Board Resolution to Set Cash Dividend Ex-Dividend Date

Announcement Date: July 3, 2026 Statement Date: July 2, 2026 Statement Time: 16:11:34 Company Code: 2427 Company Name: Sanchio Den Subject: Announcement of Board Resolution to Establish Ex-Dividend Date for Cash Dividend Applicable Clause: Clause 14 Factual Date: July 2, 2026

Details: 1. Date of Board/Shareholders' Meeting Resolution or Company Decision: 07/02/2026 2. Type of Rights/Interest (please enter 'Rights', 'Interest', or 'Rights and Interest'): Interest. 3. Type and Amount of Ordinary Share Dividend: Cash dividend of NT$138,599,700, NT$0.7 per share. 4. Ex-Rights (Ex-Interest) Trading Day: 08/05/2026 5. Final Transfer Date: 08/06/2026 6. Start Date of Transfer Suspension: 08/07/2026 7. End Date of Transfer Suspension: 08/11/2026 8. Ex-Rights (Ex-Interest) Benchmark Date: 08/11/2026 9. Final Date for Bond Conversion Application: 07/15/2026 10. Start Date of Bond Conversion Suspension: 07/17/2026 11. End Date of Bond Conversion Suspension: 08/11/2026 12. Ordinary Share Cash Dividend Payment Date: 08/28/2026 13. Other Matters to be Stated: (1) The cash dividend will be calculated to the nearest dollar, with amounts below one dollar rounded down. The total amount of fractional shares less than one dollar will be transferred to the company's Employee Welfare Committee. (2) If the total number of outstanding shares changes in the future, resulting in changes to shareholder dividend ratios, the Chairman is authorized to adjust and handle related changes. (3) Any other unaddressed matters regarding this cash dividend distribution are fully authorized to the Chairman for resolution.