【Nanya Technology】Our Company Announces Acquisition of Machinery and Equipment

1. Name and Nature of the Subject Matter (e.g., land in XX Section, XX Subsection, North District, Taichung City): Machinery and equipment. 2. Date of Occurrence of the Event: 2026/4/28~2026/4/28 3. Date of Board Resolution: Not applicable 4. Other Resolution Dates: Approval level: Chairman April 28, 2026 5. Quantity of Transaction Units (e.g., XX square meters, equivalent to XX ping), Price Per Unit, and Total Transaction Amount: Transaction quantity: A batch Total transaction amount: Approximately NTD 3,664,811,489 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): ASML TECHNOLOGY TAIWAN LTD., Relationship with the company: None. 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 and the company and the counterparty, the previous transfer date, and the transfer amount should also be disclosed: Not applicable 8. If the owner of the transaction subject matter has been a related party of the company within the past five years, the date and price of acquisition and disposal by the related party and its relationship with the company at the time of the transaction should also be disclosed: Not applicable 9. Expected Disposal Gain (or Loss) (not applicable to asset acquisition) (for deferred items, a table should be provided to explain the recognition status): Not applicable 10. Delivery or Payment Terms (including payment period and amount), Contractual Restrictions, and Other Important Covenants: Payment terms according to order conditions. 11. Method of Determining this Transaction (e.g., bidding, price comparison, negotiation), Reference Basis for Price Determination, and Decision-Making Unit: Price comparison and negotiation: Based on quotes from the vendor and other vendors, and handled in accordance with the company's approval authority regulations. 12. Name of Professional Appraiser's Office or Company and Appraisal Amount: Not applicable 13. Name of Professional Appraiser: Not applicable 14. Professional Appraiser's Practice Certificate Number: Not applicable 15. Is the appraisal result 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. Reason for not yet obtaining the appraisal report: Not applicable 18. If there is a significant difference in the appraisal result, 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 Practice Certificate Number: Not applicable 22. Broker and Brokerage Fees: Not applicable 23. Specific Purpose or Use of Acquisition or Disposal: Production use. 24. Opinions of Directors Expressing Dissent on this Transaction: Not applicable 25. Is this transaction a related party transaction: No 26. Date of Approval by Supervisors or Audit Committee: Not applicable 27. Is this transaction for acquiring real estate or right-of-use assets from a related party: No 28. Price evaluated in accordance with Article 16 of the "Regulations Governing the Acquisition and 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 in accordance with Article 17 of the same regulations: Not applicable 30. Date of Previous Material Information Announcement for the Same Event: Not applicable 31. Other Explanations: None