3711 ASE Holding

Disclosure Date: 1150707 Statement Date: 1150706 Statement Time: 204745 Company Code: 3711 Company Name: ASE Holding Subject: Announcement on behalf of subsidiary Siliconware Precision Industries Co., Ltd. regarding acquisition of operational machinery exceeding NT$1 billion Compliance Clause: Item 20 Factual Date: 1150706

Details: 1. Name and nature of the subject matter (e.g., land located in Section XX, Subsection XX, North District, Taichung City): Operational machinery equipment

2. Factual Date: 115/7/3 ~ 115/7/6

3. Board Approval Date: Not applicable

4. Other Approval Dates: Approval Level: Approved by General Manager July 6, 115 (Minguo)

5. Quantity of units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Acquired 3 batches, Average unit price per batch: NTD 530,972,020, Total transaction amount: NTD 1,592,916,060.

6. Counterparty and its relationship with the company (if the counterparty is a natural person and not a related party of the company, name disclosure may be omitted): Counterparty: Advanced Pacific Co., Ltd. Taiwan Branch; Relationship with company: None

7. If the counterparty is a related party, disclose the reason for selecting the related party, the previous transferor, the relationship among the previous transferor, the company, and the counterparty, the previous transfer date, and the transfer amount: Not applicable

8. If the ownership of the subject matter was held by a related party of the company within the past five years, disclose the related party's acquisition and disposal dates, price, and relationship with the company at the time: Not applicable

9. Estimated gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, list and explain recognition status): Not applicable

10. Delivery or payment terms (including payment period and amount), contractual restrictions, and other important agreements: Wire transfer. Contractual restrictions: None. Other important agreements: None.

11. Decision method of this transaction (e.g., bidding, quotation comparison, negotiation), reference basis for price determination, and decision-making unit: Transaction decision method: Quotation comparison/negotiation. Reference basis for price determination: Reference to historical transaction data and market conditions. Decision-making unit: Decided according to internal company approval authority.

12. Name of professional appraisal firm or company and appraisal amount: Not applicable

13. Name of professional appraiser: Not applicable

14. License number of professional appraiser: Not applicable

15. Whether the appraisal report is for a limited price, specific price, or special price: No or not applicable

16. Whether the appraisal report has not yet been obtained: No or not applicable

17. Reason for not obtaining the appraisal report: Not applicable

18. Reasons for significant differences in appraisal results and auditor's opinion: Not applicable

19. Name of auditor firm: Not applicable

20. Name of auditor: Not applicable

21. License number of auditor: Not applicable

22. Broker and brokerage fees: None

23. Specific purpose or use of acquisition or disposal: For business use

24. Opinion of directors who objected to this transaction: None

25. Whether this transaction is a related-party transaction: No

26. Date of supervisor approval or audit committee consent: Not applicable

27. Whether this transaction involves acquiring real estate or right-of-use assets from a related party: No

28. Valuation price according to Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

29. Valuation price according to Article 17 of the same rules if the valuation under the previous item is lower than the transaction price: Not applicable

30. Previous date of material information disclosure regarding the same event: Not applicable

31. Other explanatory matters: None