Sinbon: Announcement of the Board of Directors' Resolution to Lease Land and Commission Construction of a Factory in Tongluo Science Park

1. Type of contract: Land lease and commissioned construction 2. Date of occurrence of the event: 2026/4/23~2026/4/23 3. Date of board of directors' approval: April 23, 2026 4. Other approval dates: Not applicable 5. Counterparty to the contract and its relationship with the company: To be announced separately after confirmation 6. Main content of the contract (including total contract amount, estimated amount of participation, and contract start and end dates), restrictive clauses, and other important agreed matters: Estimated NT$4.3 billion 7. Name of professional appraiser's office or company and its appraisal results: Not applicable 8. Name of real estate appraiser: Not applicable 9. Real estate appraiser's license number: Not applicable 10. Specific purpose of acquisition: Consideration for overall business planning and operational management 11. Opinions of directors who dissented from this transaction: None 12. This transaction is a related party transaction: No 13. Date of approval by supervisors or audit committee: April 23, 2026 14. Is the appraisal report a limited price, specific price, or special price: No or not applicable 15. Has the appraisal report not yet been obtained: No or not applicable 16. Reason for not yet obtaining the appraisal report: Not applicable 17. If there is a significant difference in the appraisal results, the reason for the difference and the accountant's opinion: Not applicable 18. Name of accounting firm: Not applicable 19. Name of accountant: Not applicable 20. Accountant's license number: Not applicable 21. Date of previous material information announcement regarding the same event: Not applicable 22. Other matters to be specified: None Keywords: Material Information