4566 Shishuo Industrial Announces Change of Accounting Officer at Key Subsidiary

Announcement Date: August 11, 2026 Statement Date: August 10, 2026 Statement Time: 18:51:04 Company Code: 4566 Company Name: Shishuo Industrial Co., Ltd. Subject: Announcement on Change of Accounting Officer at Key Subsidiary Shishuo Technology Corporation Applicable Clause: Clause 8 Factual Date: August 10, 2026

Details: 1. Type of Personnel Change (e.g., Spokesperson, Acting Spokesperson, Key Operational Officer, Financial Officer, Accounting Officer, etc.): Accounting Officer

2. Date of Change: August 10, 2026

3. Former Officer's Name, Title, and Resume: Lin You-Shun / Accounting Manager / Shishuo Technology Corporation, Accounting Manager

4. New Officer's Name, Title, and Resume: Wang Wei-Chuan / Senior Accounting Manager / Toyo Yakuhin Kogyo (Taiwan) Co., Ltd., Accounting Manager Kobo Corporation, Accounting Manager

5. Nature of Change (e.g., Resignation, Reassignment, Dismissal, Retirement, Death, New Appointment, Removal): Resignation

6. Reason for Change: The former accounting officer will serve until August 31, 2026. The board of directors has approved the appointment of the new accounting officer.

7. Effective Date: August 31, 2026

8. Other Matters to be Disclosed: None.