[CMC Magnetics] Notice of Securities Disposal

1. Name of Security: Win Semiconductors Common Stock 2. Transaction Date: 6/3/2026 - 6/10/2026 3. Board Approval Date: N/A 4. Other Authorization: Chairman Approval, June 10, 2026 5. Quantity, Price, and Total Amount: 624,000 shares, 494.96 TWD/share, 308,852,869 TWD 6. Gain/Loss: Loss of 413,735 TWD 7. Relationship with Issuer: None 8. Current Holdings: 231,000 shares, 117,340,036 TWD, ownership 0.05% 9. Financial Data: 81.33% of total assets, 116.81% of parent equity, Working capital 8,285,327k TWD 10. Purpose: Portfolio investment 11. Dissenting Opinion: None 12. Related Party Transaction: No 13. Counterparty: N/A