CMC Disposes of Nanya Technology Shares and Recognizes Profit

Announcement Date: May 22, 115 Company Code: 2323 Company Name: CMC Subject: Announcement regarding the company's disposal of marketable securities

Explanation: 1. Name of Securities: Nanya Technology common shares 2. Transaction Dates: May 21 - May 22, 115 3. Transaction Quantity: 1,660,000 shares 4. Price per unit: 301.56 TWD 5. Total transaction amount: 500,581,556 TWD 6. Gain on disposal: 51,479,372 TWD 7. Specific purpose of the transaction: Investment portfolio adjustment 8. Holding balance after the transaction: 2,739,000 shares (shareholding ratio: 0.08%)

The transaction was conducted in the centralized trading market by an authorized trader.