Run-Tai New Signs Interior and Landscape Design Contracts and Final Settlement Agreement for Lobby Common Area Landscape Project

1. Contract Type: Subcontracting Agreement and Settlement Agreement 2. Effective Date: August 13, 2026 ~ August 13, 2026 3. Board Approval Date: August 13, 2026 (Minguo Year 115) 4. Other Approval Dates: Not applicable 5. Contracting Party and Relationship with the Company: Runde Interior Decoration Design Engineering Co., Ltd., subsidiary 6. Main Contract Contents (including total contract amount, estimated investment amount, contract period, restrictive clauses, and other important terms): (1) Contract Content: Subcontracting Agreement for the 'Run-Tai New Xinzhoumei 104-109 Interior and Landscape Design' Contract Amount: NT$2,988,000 (exclusive of tax) Contract Period: Complete design and construction drawings by December 31, 2027 (2) Contract Content: Subcontracting Agreement for the 'Run-Tai New Xinzhoumei 114 Interior and Landscape Design' Contract Amount: NT$4,003,000 (exclusive of tax) Contract Period: Complete design and construction drawings by December 31, 2027 (3) Contract Content: Subcontracting Agreement for the 'Run-Tai Hengcui Interior and Landscape Design' Contract Amount: NT$6,036,000 (exclusive of tax) Contract Period: Complete design and construction drawings by December 31, 2027 (4) Contract Content: Settlement Agreement for the 'Run-Tai Sanchong Joint Development Project Lobby Common Area Landscape Work' Original Contract Amount: NT$446,783,503 (exclusive of tax) (approved and announced by the board on June 30, 2023) First Reduction Amount: NT$34,199,565 (exclusive of tax) (approved and announced by the board on October 19, 2023) Additional Amount This Time: NT$49,885,568 (exclusive of tax) Total Amount After Settlement: NT$462,469,506 (exclusive of tax) 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: Interior and landscape design subcontracting and settlement of lobby common area landscape work 11. Directors' Objections to This Transaction: Not applicable 12. Whether This Transaction is a Related-Party Transaction: Yes 13. Date of Supervisor Approval or Audit Committee Consent: August 13, 2026 (Minguo Year 115) 14. Whether the Appraisal Report is at a Limited, Specific, or Special Price: No or Not applicable 15. Whether the Appraisal Report Has Not Been Obtained: No or Not applicable 16. Reason for Not Obtaining the Appraisal Report: Not applicable 17. Reasons for Significant Differences in Appraisal Results and 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. Previous Date of Material Information Disclosure on the Same Event: June 30, 2023; October 19, 2023 22. Other Disclosures: None