[CTBC] Announcement Regarding Acquisition of Securities

1. Securities Name: Nanya Technology Common Stock 2. Transaction Date: 115/6/4 ~ 115/6/8 3. Board of Directors Approval Date: Not Applicable 4. Other Decision Dates: Decision Level: Chairman's Decision June 8, 115 (Republic of China Calendar) 5. Transaction Quantity, Price Per Unit, and Total Transaction Amount: Transaction Quantity (thousands of shares): 1,020 Price Per Unit (NT$): 365.69 Total Transaction Amount (NT$): 373,003,928 6. Disposal Gain (or Loss) (Not Applicable for Acquisition of Securities): Not Applicable 7. Relationship with the Company of the Traded Securities: None 8. Cumulative Holding Quantity, Amount, Shareholding Ratio, and Restriction Status (e.g., Pledge Status) of the Securities (Including This Transaction) Up to Now: Holding Balance: 1,555,000 shares, Amount: NT$583,560,216 Shareholding Ratio: 0.045%, Restriction Status: None 9. Up to Now, the Proportion of Securities Investment (Including This Transaction) Listed in Article 3 of the "Rules Governing the Acquisition or Disposal of Assets by Publicly Issued Companies" to the Total Assets and the Equity Attributable to Owners of the Parent Company in the Most Recent Financial Statements, and the Amount of Working Capital in the Most Recent Financial Statements: Proportion of Total Assets: 79.46% Proportion of Equity Attributable to Owners of the Parent Company: 114.13% Working Capital Amount: NT$8,285,327 thousand 10. Specific Purpose of Acquisition or Disposal: Investment Portfolio 11. Opinions of Directors Who Expressed Dissent Regarding This Transaction: None 12. Is This Transaction a Related Party Transaction: No 13. Counterparty to the Transaction and Its Relationship with the Company: Not Applicable 14. Date of Supervisor's Approval or Audit Committee's Consent: Not Applicable 15. Date of Previous Announcement of Material Information on the Same Matter: Not Applicable 16. Other Explanatory Matters: Authorized on 115/03/31, the authorized trader may conduct securities transactions in the centralized exchange market during the second quarter of 115. Keywords: Material Information