3711 ASE Group Announces Subsidiary's Acquisition of Operating Equipment Worth Over NT$2.78 Billion

Disclosure Date: July 7, 115 Statement Date: July 6, 115 Statement Time: 20:48:02 Company Code: 3711 Company Name: ASE Group Subject: Announcement on Behalf of Subsidiary Siliconware Precision Industries Co., Ltd. Regarding Acquisition of Operating Equipment Exceeding NT$1 Billion Compliance Clause: Item 20 Event Date: July 6, 115

1. Name and Nature of the Asset (e.g., land located in Section XX, Subsection XX, North District, Taichung City): Operating machinery and equipment

2. Event Date: July 11, 114 – July 6, 115

3. Board Approval Date: Not applicable

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

5. Quantity of Units (e.g., XX square meters, equivalent to XX ping), Unit Price, and Total Transaction Amount: Acquired 60 batches, Average unit price per batch: NT$46,389,417, Total transaction amount: NT$2,783,365,000.

6. Counterparty and Its Relationship with the Company (If the counterparty is an individual and not a related party, name disclosure may be omitted): Counterparty: Cheng Tai Machinery Technology Co., Ltd.; Relationship with the company: None

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

8. If the asset’s owner within the past five years was a related party of the company, disclose the related party’s acquisition and disposal date, price, and relationship with the company at the time of transaction: Not applicable

9. Estimated gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, provide a table showing recognition): Not applicable

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

11. Method of transaction decision (e.g., bidding, price comparison, or negotiation), basis for price determination, and decision-making unit: Transaction decision method: Price comparison/negotiation. 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 appraiser 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 specifies a limited, special, or fixed price: No or not applicable

16. Whether an 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 accounting firm: Not applicable

20. Name of auditor: Not applicable

21. Auditor's license number: Not applicable

22. Broker and brokerage fees: None

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

24. Dissenting opinions from directors regarding 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 under Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

29. Valuation price under Article 17 if the price 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