ASE Technology Holding: Announcement on Behalf of Subsidiary Siliconware Precision Industries (Suzhou) Co., Ltd. Regarding the Acquisition of Business Equipment Exceeding NTD 1 Billion

1. Name and nature of the subject matter (e.g., land in XX Section, XX Subsection, North District, Taichung City): Business equipment 2. Date of occurrence of the event: 114/9/19~115/4/27 3. Date of board of directors' resolution: Not applicable 4. Other approval dates: Approval level: General Manager's approval April 27, 115 (Republic of China calendar) 5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Acquired 15 batches, Average unit price per batch: NTD 141,569,680, Total transaction amount: NTD 2,123,545,207. 6. Counterparty to the transaction and its relationship with the company (if the counterparty is a natural person and not a related party of the company, their name may be omitted): Counterparty: Changzhou Xinchain Technology Co., Ltd.; Relationship with the company: None 7. If the counterparty is a related party, the reasons for selecting the related party as the transaction object, the previous owner, the relationship between the previous owner and the company and the counterparty, the previous transfer date, and transfer amount should be disclosed: Not applicable 8. If the owner of the transaction target has been a related party of the company within the past five years, the acquisition and disposal dates, prices, and relationship with the company at the time of the transaction by the related party should be disclosed: Not applicable 9. Estimated disposal profit (or loss) (not applicable to asset acquisition) (for deferred items, a list explaining recognition status should be provided): Not applicable 10. Delivery or payment terms (including payment period and amount), contract restriction clauses, and other important agreed matters: T/T (Telegraphic Transfer). Contract restriction clauses: None. Other important agreed matters: None. 11. Method of determining this transaction (e.g., bidding, price comparison, or negotiation), reference basis for price determination, and decision-making unit: Transaction determination method: Price comparison/negotiation. Reference basis for price determination: Reference to historical transaction data and market prices. Decision-making unit: Determined according to the company's internal approval authority. 12. Professional appraiser firm or company name and appraisal amount: Not applicable 13. Name of professional appraiser: Not applicable 14. Professional appraiser's license number: Not applicable 15. Is the appraisal report for a limited price, specific price, or special price: No or Not applicable 16. Has the appraisal report not yet been obtained: No or Not applicable 17. Reasons for not yet obtaining the appraisal report: Not applicable 18. If there is a significant difference in the appraisal results, the reasons for the difference and the CPA's opinion: Not applicable 19. CPA firm name: Not applicable 20. CPA name: Not applicable 21. CPA's license number: Not applicable 22. Broker and brokerage fees: None 23. Specific purpose or use of acquisition or disposal: Operational use 24. Opinions of directors who dissented from this transaction: None 225. Is this transaction a related party transaction: No 26. Date of approval by supervisor or audit committee: Not applicable 27. Is this transaction the acquisition of real estate or right-of-use assets from a related party: No 28. Price evaluated according to Article 16 of the 'Regulations Governing the Acquisition or Disposal of Assets by Public Companies': Not applicable 29. If the price evaluated in the preceding paragraph is lower than the transaction price, the price evaluated according to Article 17 of the same regulations: Not applicable 30. Date of previous significant announcement regarding the same event: Not applicable 31. Other matters to be specified: None