[CMC] Announcement of Disposal of Securities

1. Security Name: Nanya Technology common stock. 2. Transaction Date: 2026/05/28. 3. Board Approval Date: N/A. 4. Other Approval: Chairman approval on 2026/05/28. 5. Quantity: 1,239,000 shares, Price: 324.92 TWD, Total: 402,576,379 TWD. 6. Gain: 69,172,016 TWD. 7. Relationship: None. 8. Current Holdings: 1,160,000 shares, 307,572,350 TWD, 0.03% stake. 9. Asset Ratio: 79.75% of total assets. 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 disclosure: N/A. 16. Other: Authorized for Q2 2026 trading.