[Nanya Technology] Announcement regarding disposal of assets in accordance with 'Regulations Governing the Acquisition or Disposal of Assets by Public Companies'

1. Name of securities: Nanya Technology 2. Date of transaction: December 24, 2025 ~ May 13, 2026 3. Date of board of directors' approval: Not applicable 4. Other approval dates: Approval level: Chairman's approval on May 13, 2026 5. Quantity, unit price, and total transaction amount: Quantity: 1,500,000 shares Unit price: NT$264.55 Total transaction amount: NT$396,821,000 6. Disposal gain (or loss) (not applicable for acquisition of marketable securities): Disposal gain: NT$67,717,269 7. Relationship with the target company of the transaction: None 8. As of now, cumulative holdings of these securities (including this transaction), amount, shareholding ratio, and restrictions on rights (e.g., pledge): As of now, cumulative holdings of these securities are 0 shares, amount NT$0. Shareholding ratio is 0%. No restrictions on rights. 9. As of now, the ratio of investment in marketable securities (including this transaction) listed in Article 3 of the 'Regulations Governing the Acquisition or Disposal of Assets by Public Companies' to the company's total assets and owners' equity attributable to the parent company in the latest financial report, and the working capital amount in the latest financial report: Total assets ratio: 20.19%; Shareholders' equity ratio: 27.26% Working capital in the latest financial report: NT$1,158,483 thousand 10. Specific purpose of acquisition or disposal: Investment and financial management 11. Opinions of dissenting directors on this transaction: None 12. This transaction is a related party transaction: No 13. Counterparty and its relationship with the company: Not applicable 14. Date of approval by supervisors or audit committee: Not applicable 15. Date of previous significant announcement on the same matter: Not applicable 16. Other matters to be specified: None. Keyword: Material Information