【CMC Magnetics】Supplementary announcement on the acquisition of securities

1. Name of security: WIN Semiconductors common stock. 2. Transaction date: 115/5/15~115/5/26. 3. Board approval date: N/A. 4. Other approval date: Chairman approval, May 26, 115. 5. Quantity, unit price, and total amount: 751,000 shares, 475.35 TWD per unit, total 356,989,197 TWD. 6. Profit/Loss: N/A. 7. Relationship with target: None. 8. Current holdings: 20,000 shares, 9,923,056 TWD, 0.005% stake. 9. Asset ratios: 74.39% of total assets, 106.84% of equity, working capital 8,285,327,000 TWD. 10. Purpose: Investment portfolio. 11. Dissenting opinions: None. 12. Related party transaction: No. 13. Counterparty: N/A. 14. Supervisor approval: N/A. 15. Previous announcement: May 26, 115. 16. Other: Authorized on 115/03/31 for Q2 trading.