【CMC Magnetics】Announcement Regarding the Company's Acquisition of Securities

1. Security Name: Auras Technology Common Stock 2. Transaction Period: April 2, 2026 ~ April 28, 2026 3. Board of Directors' Approval Date: Not applicable 4. Other Approval Dates: * Approval Level: Chairman's Approval * Date: April 28, 2026 (Minguo Year 115) 5. Quantity of Transaction, Unit Price, and Total Transaction Amount: * Transaction Quantity (thousand shares): 130 * Unit Price (NTD): 2,368.40 * Total Transaction Amount (NTD): 307,892,076 6. Disposal Gain (or Loss) (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Transaction Target Company: None 8. Accumulated Holdings of These Securities (Including This Transaction) to Date: Quantity, Amount, Shareholding Ratio, and Restricted Rights (e.g., Pledge Status): * Remaining Holdings: 35,000 shares * Amount: NT$96,799,137 * Shareholding Ratio: 0.009% * Restricted Rights: None 9. Proportion of Securities Investments (Including This Transaction) Listed Under Article 3 of the "Regulations Governing the Acquisition and Disposal of Assets by Public Companies" to the Total Assets and Equity Attributable to Owners of the Parent Company in the Company's Most Recent Financial Report, and the Amount of Working Capital in the Most Recent Financial Report: * Proportion to Total Assets: 76.42% * Proportion to Equity Attributable to Owners of the Parent Company: 107.04% * Working Capital Amount: NT$8,285,327 thousand 10. Specific Purpose of Acquisition or Disposal: Investment portfolio 11. Opinion of Dissenting Directors in This Transaction: None 12. Is This 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 Material Information Announcement for the Same Event: Not applicable 16. Other Matters to be Specified: An authorized trader was authorized on March 31, 2026, to conduct securities transactions in the centralized trading market during the second quarter of 2026.