ASE Holding Announces Subsidiary ASE (Korea) Inc. to Construct 7th and 8th Floors of Building 2 via Self-Site Commissioning

1. Contract Type: Self-Site Commissioning 2. Event Date: 115/7/10 ~ 115/7/10 3. Board Approval Date: Not applicable 4. Other Approval Dates: Approval Level: Approved by General Manager July 10, 115 (Minguo) 5. Contract Counterparty and Relationship with Company: Contract Counterparty: Deers E&C, EN Tech, and Archigroup Relationship with Company: None 6. Main Contract Contents (including total contract amount, estimated investment amount, contract start and end dates, restrictive clauses, and other important terms): Estimated Investment Amount: USD 40,193,800 (approximately TWD 1,280,966,446) Restrictive Clauses: None Important Terms: The construction contract includes cleanroom interior works and related power equipment 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 expand production space in response to operational needs 11. Director's Opinion Objecting to This Transaction: Not applicable 12. Whether This Transaction is a Related-Party Transaction: No 13. Date of Supervisor's Approval or Audit Committee's Consent: Not applicable 14. Whether the Appraisal Report is at a Limited, Specific, or Special Price: No or Not applicable 15. Whether Appraisal Report Has Not Yet Been Obtained: No or Not applicable 16. Reason for Not Yet Obtaining 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 Accountant: Not applicable 20. License Number of Accountant: Not applicable 21. Previous Date of Material Information Disclosure on the Same Event: Not applicable 22. Other Statements: None