9945 Run-Tai New Announces Subsidiary's Construction Contract for Xindu Project

Announcement Date: June 24, 2026 Statement Date: June 23, 2026 Statement Time: 16:00:45 Company Code: 9945 Company Name: Run-Tai New Subject: Announcement on behalf of subsidiary Run-Tai Construction Co., Ltd. regarding the contracting agreement for the "Run-Tai Construction Xindu Segment New Construction Project" Applicable Clause: Clause 20 Factual Date: June 23, 2026

1. Type of Contract: Construction Contract 2. Factual Date: June 23, 2026 ~ June 23, 2026 3. Board Approval Date: June 23, 2026 4. Other Approval Dates: Not applicable 5. Contract Counterparty and Relationship with the Company: Run-Hong Precision Engineering Co., Ltd., other related parties

6. Main Contract Contents (including total contract amount, estimated investment amount, contract start and end dates, restrictive clauses, and other important provisions): Project: "Run-Tai Construction Xindu Segment New Construction Project" Total Contract Amount: NT$1,492,203,580 (excluding tax) Contract Period: 1,300 calendar days from the date of approval of layout verification to the date of approval of the occupancy permit

7. Name of Professional Appraisal Firm and Appraisal Results: (1) Chung-Ting Real Estate Appraisers Office – Appraised Value: NT$1,519,723,667 (excluding tax) for new construction (2) Chung-Lien Real Estate Appraisers Office – Appraised Value: NT$1,544,627,659 (excluding tax) for new construction

8. Names of Real Estate Appraisers: (1) Chung-Ting Real Estate Appraisers Office: Jian Wu-Chi (2) Chung-Lien Real Estate Appraisers Office: Liao Feng-Lin

9. Real Estate Appraiser License Numbers: (1) Chung-Ting Real Estate Appraisers Office: (100) Taipei City Appraisal No. 000172 (2) Chung-Lien Real Estate Appraisers Office: (96) Taipei City Appraisal No. 000122

10. Specific Purpose of Acquisition: Construction contracting 11. Dissenting Director Opinions on the Transaction: Not applicable 12. Is this a related-party transaction: Yes 13. Date of Supervisor Approval or Audit Committee Consent: June 23, 2026 14. Is the appraisal report a limited, specific, or special price: No or not applicable 15. Has the appraisal report not yet 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 auditor's opinion: Not applicable 18. Name of Accounting Firm: Not applicable 19. Name of Auditor: Not applicable 20. Auditor License Number: Not applicable 21. Previous date of major information disclosure on the same event: Not applicable 22. Other Remarks: None