[CMC] Announcement of Acquisition of Securities

1. Security Name: MediaTek Common Stock. 2. Transaction Date: 115/5/14~115/5/28. 3. Board Approval Date: N/A. 4. Other Approval Date: Chairman approval, 115/05/28. 5. Quantity, Price, Total Amount: 120,000 shares, NT$4,044.53 per share, Total NT$485,344,191. 6. Disposal Gain/Loss: N/A. 7. Relationship with target: None. 8. Cumulative holding: 55,000 shares, NT$243,036,867, 0.003% stake. 9. Asset ratio: 79.75% of total assets, 114.54% of equity. 10. Purpose: Investment portfolio. 11. Dissenting opinion: None. 12. Related party transaction: No. 13. Counterparty: N/A. 14. Audit Committee approval: N/A. 15. Previous announcement: N/A. 16. Other: Authorized on 115/03/31 for Q2 trading.