[Description 99.1 Announcement on 2014/03/10: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2014/03/14: UMC will attend investor conferences on 2014/03/18 99.3 Announcement on 2014/03/14: To announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2014/03/25: To announce related materials on acquisition of machinery and equipment 99.5 Announcement on 2014/03/10: February Revenue] [FORM 6-K March 25, 2014 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu CFO Description 99 6K on 03/25/2014 6-K 1 htm_8461.htm LIVE FILING]

[Description 99.1 Announcement on 2014/03/12: To announce Important Resolutions from 12th term of 14th Board Meeting 99.2 Announcement on 2014/03/12: To announce Board Meeting Resolution on Earnings Distribution 99.3 Announcement on 2014/03/12: To announce termination of private equity offering approved by 2013 shareholders’ meeting 99.4 Announcement on 2014/03/12: To announce UMC Board Meeting has resolved the proposal for private placement] [FORM 6-K March 12, 2014 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu CFO Description 99 6k on 03/12/2014 6-K 1 htm_8402.htm LIVE FILING]

[Description 99.1 Announcement on 2014/02/12: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2014/02/25: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2014/02/10: January Revenue 99.4 Announcement on 2014/02/15: the trading and pledge of UMC common shares by directors, executive officers and 10% shareholders of UMC 1 To announce related] [FORM 6-K February 25, 2014 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu CFO Description 99 6K on 02/25/2014 6-K 1 htm_8356.htm LIVE FILING]

[Description 99.1 Announcement on 2014/01/03: To announce the repurchase and cancellation of Zero Coupon Convertible Bonds due 2016 99.2 Announcement on 2014/01/20: To announce UMC will convene 4Q 2013 Investor Conference 99.3 Announcement on 2014/01/23: To Represent subsidiary ALLIANCE OPTOTEK CORP. to announce related materials of merger with WIESON TECHNOLOGIES CO., LTD. 99.4 Announcement on 2014/01/24: To announce the unconsolidated] [FORM 6-K January 27, 2014 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu CFO Description 99 6K on 01/27/2014 6-K 1 htm_8280.htm LIVE FILING]

[Description 99.1 Announcement on 2013/11/26: To represent subsidiary to announce related materials on investment of private placement 99.2 Announcement on 2013/11/28: To announce related materials on disposal 100% shareholding of UMC Japan 99.3 Announcement on 2013/12/18: To announce Important Resolutions from 12th term 13th Board Meeting 99.4 Announcement on 2013/12/18: To announce related materials on acquisition of Wavetek Microelectronics Corporation] [FORM 6-K January 2, 2014 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu CFO Description 99 6K on 2014/01/02 6-K 1 htm_8226.htm LIVE FILING]