STARLUX Airlines Announces Construction of Multi-Functional Building at Aviation City Site

Release Date: August 12, 2026 Statement Date: August 11, 2026 Statement Time: 18:05:39 Company Code: 2646 Company Name: STARLUX Airlines Subject: Announcement of Relevant Information Regarding the New Construction Project of a Multi-Functional Building Commissioned on Owned Land at the Aviation City Site Applicable Clause: Clause 20 Factual Date: August 11, 2026

Details: 1. Type of Contract: Construction Commission on Owned Land 2. Factual Date: August 11, 2026 ~ August 11, 2026 3. Board Approval Date: August 11, 2026 4. Other Approval Dates: Not applicable 5. Counterparty and Relationship with the Company: Counterparty: Chung Wei Construction Engineering Co., Ltd. Relationship with the Company: None 6. Main Contents of the Contract (including total contract amount, estimated investment amount, contract period, restrictive clauses, and other important terms): Total Contract Amount: NT$4,227,000,000 (inclusive of tax) Contract Period: Effective from the signing date until completion, acceptance, and expiration of the warranty period for the entire project Restrictive Clauses and Other Important Terms: None 7. Name of Professional Appraisal Firm or Company and Appraisal Result: Not applicable 8. Name of Real Estate Appraiser: Not applicable 9. License Number of Real Estate Appraiser: Not applicable 10. Specific Purpose of Acquisition: To meet future operational development needs 11. Dissenting Director Opinions on the Transaction: Not applicable 12. Whether the Transaction is a Related-Party Transaction: No 13. Date of Supervisor Approval or Audit Committee Consent: August 11, 2026 14. Whether the Appraisal Report is at a Limited, Specific, or Special Price: No or Not applicable 15. Whether an Appraisal Report Has Not Yet Been Obtained: No or Not applicable 16. Reason for Not Yet Obtaining the Appraisal Report: Not applicable 17. Reasons for Significant Differences in Appraisal Results and Auditor's Opinion: Not applicable 18. Name of Accounting Firm: Not applicable 19. Name of Auditor: Not applicable 20. Auditor's License Number: Not applicable 21. Previous Date of Material Information Disclosure on the Same Event: Not applicable 22. Other Statements: None