Powertech Announces Share Buyback Amount Exceeding NT$300 Million

1. Date when cumulative number of repurchased shares reached 2% of issued shares or repurchase amount exceeded NT$300 million: 115/09/21 2. Number of shares repurchased this time (shares): 839,000 3. Total amount paid for repurchased shares (NT$): 240,371,043 4. Average repurchase price per share (NT$): 286.50 5. Cumulative number of own shares held during repurchase period (shares): 8,791,000 6. Ratio of cumulative own shares held to total issued shares (%): 1.16 7. Other matters to be disclosed: None.