[CMC] Announcement of Disposal of Securities

1. Security: Nanya Technology Corp. Common Stock. 2. Transaction Dates: 2026/04/28 - 2026/05/05. 3. Board Approval: N/A. 4. Other Decision Date: Approved by Chairman on 2026/05/05. 5. Volume/Price/Amount: 2,226 thousand shares at TWD 241.27 each, totaling TWD 537,062,740. 6. Realized Profit: TWD 28,819,271. 7. Relationship with Target: None. 8. Cumulative Holding: 5,235,000 shares; Amount: TWD 1,182,849,849; Shareholding ratio: 0.15%. 9. Financial Ratios: Investment vs Total Assets: 74.58%; Investment vs Equity: 104.47%; Working Capital: TWD 8,285,327 thousand. 10. Purpose: Investment portfolio. 11. Dissenting Opinions: None. 12. Related Party Transaction: No. 13. Counterparty: N/A. 14. Audit Committee Approval: N/A. 15. Previous Announcement: N/A. 16. Others: Authorized on 2026/03/31 for transactions in the centralized market during Q2 2026.