ASE Technology Holding Co., Ltd.: Subsidiary SiliconExpert Precision Industry Co., Ltd. Acquires Factory Building

1. Name and nature of the target property (e.g., land in Section XX, Block XX, North District, Taichung City): Factory Building (1F-3F) at No. 7, North Park 1st Road, Shanhua District, Tainan City, Southern Science Park (Tainan Park). 2. Date of occurrence of the event: 115/4/30~115/4/30. 3. Date of Board Resolution: April 30, 115 (R.O.C. calendar). 4. Other approval dates: Not applicable. 5. Quantity of transaction units (e.g., XX square meters, equivalent to XX tsubo), price per unit, and total transaction amount: Building area 92,848.41 square meters, equivalent to 28,086.64 tsubo. Unit price: NT$153,810 per tsubo. Total transaction amount: NT$4,320,000,000 (pre-tax). 6. Transaction counterparty and relationship with the company (if the counterparty is an individual and not related to the company, their name may be omitted): Transaction counterparty: HannStar Display Corporation; Relationship with the company: None (not a related party). 7. If the transaction 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 transaction counterparty, and the date and amount of the previous transfer must also be announced: Not applicable. 8. If the owner of the transaction asset has been a related party of the company in the past 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 should also be announced: Not applicable. 9. Expected profit (or loss) from disposal (not applicable for asset acquisition) (deferred items should be listed and explained): Not applicable. 10. Delivery or payment terms (including payment period and amount), contract restrictions, and other important agreed matters: Installment telegraphic transfer according to the agreed time. 11. Method of decision for this transaction (e.g., bidding, price comparison, or negotiation), reference basis for price determination, and decision-making unit: Transaction decision method: Negotiation. Reference basis for price determination: Reference expert appraisal and market prices. Decision-making unit: Board of Directors. 12. Name of professional appraisal firm or company and its appraised amount: 1. Zhonglian Real Estate Appraisers Office, Appraised amount: NT$4,104,690,993. 2. ChengZheng Cross-Strait Real Estate Appraisers Joint Office, Appraised amount: NT$3,976,171,616. 13. Name of professional appraiser: 1. Liao Feng-Lin 2. Lin Jin-Sheng. 14. Professional appraiser's license number: 1. (96)北市估字第000122號 2. (94)北市估字第000060號. 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. If there are significant differences in appraisal results, the reasons for the differences and the accountant's opinion: Not applicable. 19. Name of accounting firm: Not applicable. 20. Accountant's name: Not applicable. 21. Accountant's license number: Not applicable. 22. Broker and brokerage fee: C&W Real Estate Investment Advisory Co., Ltd. Taiwan Branch, as agreed by both parties. 23. Specific purpose or use of acquisition or disposal: For business use. 24. Opinion of dissenting directors for this transaction: None. 25. 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 its usage rights from a related party: No. 28. Price assessed according to Article 16 of the "Regulations Governing the Acquisition or Disposal of Assets by Publicly Issued Companies": Not applicable. 29. If the price assessed in the previous paragraph is lower than the transaction price, the price assessed according to Article 17 of the same regulations: Not applicable. 30. Date of previous announcement of major information for the same event: Not applicable. 31. Other matters to be noted: None.