[Nanya Tech] Announcement of acquisition of facility equipment

1. Name and nature of asset: Facility equipment. 2. Date of occurrence: 2025/12/22 to 2026/04/22. 3. Date of BoD approval: N/A. 4. Other decision date: Approved by Chairman on 2026/04/22. 5. Quantity, unit price, and total amount: Quantity: One batch. Total amount: 365,140,000 TWD. 6. Counterparty: Nan Ya Photonics Inc. (Related party). 7. Reason for choosing related party: Decided after price comparison and negotiation. Previous transfer info: N/A. 8-9. N/A. 10. Payment terms: Processed according to order conditions or contract terms. 11. Method of determination: Price comparison and negotiation based on quotations from the vendor and other suppliers, processed per company's authority regulations. 12-24. Appraiser, CPA details, Dissenting directors: N/A. 25. Related party transaction: Yes. 26. Approval by audit committee: Will be submitted to the Audit Committee. 27. Acquiring real estate from related party: No. 28-31. Assessed prices and other matters: N/A / None.