UMC Announces Completion of Cancellation of Restricted Employee Shares and Capital Change Registration

Release Date: August 12, 115 Statement Date: August 11, 115 Statement Time: 15:27:41 Company Code: 2303 Company Name: United Microelectronics Corporation (UMC) Subject: Announcement of Completion of Cancellation of Restricted Employee Shares and Registration of Change in Paid-in Capital Relevant Clause: Clause 36 Factual Date: August 11, 115

Details: 1. Regulatory Authority Approval Date for Capital Reduction: August 10, 115 2. Date of Completion of Capital Change Registration: August 10, 115 3. Impact on Financial Statements (including differences in paid-in capital and outstanding shares, and impact on net asset value per share): (1) Before cancellation of issued restricted employee shares and capital reduction: The company's paid-in capital was NT$125,769,848,700, with 12,546,433,870 shares outstanding, and net asset value per share was NT$35.38. (2) After cancellation of issued restricted employee shares and capital reduction: The company's paid-in capital is NT$125,700,938,990, with 12,539,542,899 shares outstanding, and net asset value per share is NT$35.40. (Note: Net asset value per share is calculated based on the audited consolidated financial statements for the second quarter of year 115.) 4. Planned Share Exchange Program: Not applicable 5. Number of ordinary shares to be listed after capital reduction: Not applicable 6. Ratio of listed ordinary shares to total issued ordinary shares after capital reduction (listed shares / total issued shares): Not applicable 7. If the number of listed ordinary shares after capital reduction is less than 60 million and less than 25%, explanation of measures for low share liquidity: Not applicable 8. Other Matters to be Disclosed: None.