[CMC Magnetics] Announcement on Acquisition of Securities

1. Name of Securities: MediaTek Common Stock 2. Transaction Date: May 29, 115 - June 2, 115 3. Board Approval Date: N/A 4. Other Approval Date: Chairman's approval, June 2, 115 5. Transaction Quantity, Price per unit, and Total amount: Quantity 85,000 shares, Price 4,376.52 NTD, Total 372,004,253 NTD 6. Disposition Gain (or Loss): N/A 7. Relationship with the target company: None 8. Cumulative holdings (including this transaction): 95,000 shares, Amount 419,116,260 NTD, Shareholding ratio 0.006%, No restrictions 9. Investment ratio based on 'Regulations Governing the Acquisition and Disposal of Assets by Public Companies': Ratio to total assets 79.21%, Ratio to equity attributable to owners of the parent 113.76%, Operating capital 8,285,327,000 NTD 10. Purpose of acquisition: Investment portfolio 11. Opinions of directors dissenting: None 12. Related party transaction: No 13. Relationship with the counterparty: N/A 14. Date of approval by supervisors or audit committee: N/A 15. Date of previous major information release for the same event: N/A 16. Other notes: Authorized the person concerned on March 31, 115, to conduct securities transactions in the centralized market during the second quarter of 115.