4566 Shishuo Industrial: Board Approves Release of Managers from Non-Competition Restrictions

Announcement Date: August 11, 2026 Statement Date: August 10, 2026 Statement Time: 18:48:23 Company Code: 4566 Company Name: Shishuo Industrial Co., Ltd. Subject: Board Resolution to Lift Non-Competition Restrictions on Managers Relevant Clause: Item 21 Event Date: August 10, 2026

Details: 1. Board Resolution Date: August 10, 2026 2. Names and Titles of Managers Permitted to Engage in Competitive Activities: (1) Liu Si-Jian / General Manager of Taiwan and Thailand Plant Operations (2) Yeh Jin-Cheng / Director of Technology Division 3. Permitted Competitive Activities: Serving as the representative director for the corporate director of the invested company, "Tien Yang Aerospace Technology Corporation." 4. Duration of Permitted Competitive Activities: Throughout the period of their employment as managers at the company. 5. Resolution Outcome (Voting Results per Company Act Article 32): Approved as proposed. 6. Names and Titles of Managers Engaging in Competitive Activities Related to Mainland China-Based Businesses (Enter "N/A" if not applicable): N/A 7. Name and Position Held in the Mainland China-Based Business: N/A 8. Address of the Mainland China-Based Business: N/A 9. Business Scope of the Mainland China-Based Business: N/A 10. Impact on the Company's Financial and Operational Status: The entity is a consolidated subsidiary in the company's financial statements. 11. Investment Amount and Shareholding Ratio by Managers in the Mainland China-Based Business (if any): N/A 12. Other Matters to be Disclosed: None.