UMC Announces Share Buyback Amount Reaches Over NT$300 Million

1. Date when the cumulative buyback quantity reached 2% of the company's issued shares or the amount reached NT$300 million or more: 115/05/12 2. Quantity of shares repurchased in this instance (shares): 1,919,000 3. Total amount of shares repurchased in this instance (NT$): 194,882,342 4. Average price per share repurchased in this instance (NT$): 101.55 5. Cumulative quantity of own company shares held within the buyback period (shares): 10,251,000 6. Ratio of cumulative own company shares held to the company's total issued shares within the buyback period (%): 0.08 7. Other matters to be noted: None Keywords: Material Information