ASE Technology Holding Announces Disposal of Business Equipment by Subsidiary SPIL Suzhou to SPIL

1. Name and nature of the subject matter (e.g., land located in Section XX, Block XX, North District, Taichung City): Business equipment 2. Date of occurrence: 114/6/25~115/6/10 3. Date of Board of Directors' approval: Not applicable 4. Other approval dates: Approval level: General Manager's approval June 10, 115 (Republic of China calendar) 5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), price per unit, and total transaction amount: Acquired 6 batches, Average price per batch: NTD 59,777,194, Total transaction amount: NTD 358,663,161. 6. Transaction counterparty and relationship with the company (If the counterparty is an individual and not a related party of the company, their name may be omitted): Counterparty: SPIL Precision Industrial Co., Ltd.; Relationship with the company: Parent company 7. If the counterparty is a related party, the reason for selecting the related party as the transaction object, the previous owner, the relationship between the previous owner, the company, and the counterparty, the date of the previous transfer, and the amount of the transfer shall be announced: Operational needs 8. If the owner of the subject matter has been a related party of the company within the last five years, the date of acquisition and disposal by the related party, the price, and the relationship with the company at the time of the transaction shall also be announced: Not applicable 9. Estimated profit (or loss) from disposal (Not applicable for asset acquirers) (If deferred, list recognition status): This transaction is between a parent and subsidiary, and there will be no profit or loss from disposal after consolidation. 10. Delivery or payment terms (including payment period and amount), contract restrictions, and other important agreements: Telegraphic transfer. Contract restrictions: None. Other important agreements: None. 11. Method of decision for this transaction (e.g., tender, 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: Determined according to internal company approval authority. 12. Name of professional appraisal firm or company and its appraised amount: Not applicable 13. Name of professional appraiser: Not applicable 14. Professional appraiser's license number: Not applicable 15. Is the appraisal report a limited price, specific price, or special price: No or not applicable 16. Have you obtained the appraisal report yet: No or not applicable 17. Reason for not obtaining the appraisal report yet: Not applicable 18. If there is a significant difference in the appraisal results, the reason for the difference and the accountant's opinion: Not applicable 19. Name of accounting firm: Not applicable 20. Name of accountant: Not applicable 21. Accountant's license number: Not applicable 22. Broker and brokerage fee: None 23. Specific purpose or use of acquisition or disposal: Business use 24. Opinions of directors who dissented from this transaction: None 25. Is this transaction a related party transaction: Yes 26. Date of approval by supervisor or consent by audit committee: In accordance with Article 15, Paragraph 3 of the "Rules Governing the Acquisition or Disposal of Assets by Publicly Issued Companies," subsequent ratification by the most recent Board of Directors may be obtained. 27. Is this transaction an acquisition of real estate or its right-of-use assets from a related party: No 28. Appraisal price according to Article 16 of the "Rules Governing the Acquisition or Disposal of Assets by Publicly Issued Companies": Not applicable 29. If the appraised price in the preceding paragraph is lower than the transaction price, the appraised price according to Article 17 of the same rules: Not applicable 30. Date of previous announcement of material information regarding the same event: Not applicable 31. Other explanatory matters: None