[CMC] Announcement on the Acquisition of Securities by the Company

1. Name of Securities: Nanya Technology Common Shares 2. Date of Transaction: 115/5/26 - 115/6/3 3. Date of Board Approval: Not applicable 4. Other Approval Dates: Approval Level: Chairman Approval June 3, 115 5. Quantity, Unit Price, and Total Amount: Quantity (in thousands): 1,300 Unit Price (TWD): 391.94 Total Amount (TWD): 509,517,144 6. Disposal Gain (or Loss) (Not applicable for acquisition of securities): Not applicable 7. Relationship with the Target Company: None 8. Cumulative Holding Status: Holding Balance: 1,135,000 shares, Amount: 424,621,185 TWD Holding Ratio: 0.03%, Restrictions on Rights: None 9. Investment status based on regulations: Ratio to Total Assets: 78.82% Ratio to Equity Attributable to Parent Company Owners: 113.20% Working Capital: 8,285,327 thousand TWD 10. Purpose of Acquisition: Investment Portfolio 11. Dissenting Directors: None 12. Related Party Transaction: No 13. Relationship with Counterparty: Not applicable 14. Audit Committee Approval Date: Not applicable 15. Date of previous announcement: Not applicable 16. Other notes: Authorized relevant personnel on March 31, 115, to conduct securities transactions in the centralized market during the second quarter of 115.