Nanya Announces Board Approval to Acquire Right-of-Use Asset from Related Party Nanya Circuit Board Co., Ltd.

1. Name and nature of the subject property (e.g., land located at XX Section, XX Subsection, North District, Taichung City): Factory premises located at 3rd Floor, No. 57, Wei Wang Street, Shulin District, New Taipei City (partial area)

2. Date on which the fact occurred: August 11, 2026 ~ August 11, 2026

3. Date of board approval: August 11, 2026

4. Other approval dates: Not applicable

5. Quantity of transaction units (e.g., XX square meters, equivalent to XX ping), unit price, and total transaction amount: Quantity: 2,080 ping Unit price: NT$557.07 per ping Total transaction amount: NT$64,835 thousand for the right-of-use asset

6. Counterparty and its relationship with the company (if the counterparty is an individual and not a related party of the company, name disclosure may be omitted): Counterparty: Nanya Circuit Board Co., Ltd. Nanya holds 61.36% of the shares in Nanya Circuit Board Co., Ltd., making it the parent company.

7. If the counterparty is a related party, state the reason for selecting the related party as the transaction party, the previous transferor, the relationship between the previous transferor and the company and the counterparty, the previous transfer date, and the transfer amount: Reason for selecting related party: Operational necessity to lease factory space from Nanya Circuit Board Co., Ltd., a related party. Previous transferor: Not applicable

8. If the owner of the subject asset within the past five years was a related party of the company, disclose the date of acquisition and disposal, price, and the relationship with the company at the time: Not applicable

9. Estimated gain (or loss) on disposal (not applicable for asset acquisition) (if deferred, provide a table showing recognition): Not applicable

10. Delivery or payment terms (including payment periods and amounts), contractual restrictions, and other important agreements: Delivery or payment terms: Monthly payment of NT$1,159 thousand as per contract terms Contractual restrictions and other important agreements: None

11. Method of determining the transaction (e.g., bidding, price comparison, negotiation), basis for price determination, and decision-making unit: Method and basis: Both parties determined the price by referencing market rates Decision-making unit: The company's board of directors

12. Name of professional appraisal firm or company and appraisal amount: Not applicable

13. Name of professional appraiser: Not applicable

14. Professional appraiser license number: Not applicable

15. Whether the appraisal report is for a limited price, specific price, or special price: No or not applicable

16. Whether an appraisal report has not yet been obtained: No or not applicable

17. Reason for not obtaining the appraisal report: Not applicable

18. If there is a significant difference in appraisal results, explain the reason and provide auditor's opinion: Not applicable

19. Name of accounting firm: Not applicable

20. Name of auditor: Not applicable

21. Auditor license number: Not applicable

22. Broker and brokerage fee: None

23. Specific purpose or use of the acquisition or disposal: Operational necessity

24. Opinions of directors who objected to the transaction: None

25. Whether this transaction is a related-party transaction: Yes

26. Date of supervisor approval or audit committee consent: August 11, 2026

27. Whether the transaction involves acquiring real estate or right-of-use asset from a related party: Yes

28. Valuation amount under Article 16 of the 'Asset Acquisition and Disposal Rules for Publicly Issued Companies': Not applicable

29. Valuation amount under Article 17 of the same rules, if the valuation under the previous item is lower than the transaction price: Not applicable

30. Previous date of material information disclosure regarding the same event: Not applicable

31. Other explanatory matters: (1) This transaction was approved and announced by the audit committee and board of directors on August 11, 2026. The actual transaction has not yet been executed. (2) Lease period: From October 1, 2026 to September 30, 2031.