[Description 99.1 Announcement on 2010/09/28: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2010/09/30: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2010/10/07: To announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2010/10/11: To announce related materials on acquisition of machinery and equipment 99.5 Announcement on] [FORM 6-K October 25, 2010 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu Chief Financial Officer Description 99 6K on 10/25/2010 6-K 1 htm_5356.htm LIVE FILING]

[UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2010 AND 2009 Address: No. 3 Li-Hsin Road II, Hsinchu Science Park, Hsinchu City, Taiwan, R.O.C. Telephone: 886-3-578-2258 The reader is advised that these financial statements have been prepared originally in Chinese. In the event of a conflict between these financial statements and the original] [Form 6-K September 27, 2010 United Microelectronics Corporation Hsinchu, Taiwan, R.O.C. No. 3 Li Hsin Road II þ o o o o þ n/a United Microelectronics Corporation Chitung Liu Chief Financial Officer Description 99.1 6-K 1 c05947e6vk.htm FORM 6-K]

[Description 99.1 Announcement on 2010/09/02: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2010/09/06: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2010/09/06: To announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2010/09/07: UMC will attend investor conferences on 2010/09/08 99.5 Announcement on 2010/09/08: Announcement of] [FORM 6-K September 24, 2010 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu Chief Financial Officer Description 99 09242010 6-K 1 htm_5299.htm LIVE FILING]

[Description 99.1 Announcement on 2010/07/26: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2010/07/27: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2010/07/29: To announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2010/07/30: To announce related materials on acquisition of machinery and equipment 99.5 Announcement on] [FORM 6-K August 25, 2010 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu Chief Finacial Officer Description 99 6K on 08/25/2010 6-K 1 htm_5243.htm LIVE FILING]

[Amendment for Major Resolution from Board Meeting on 2010/08/25 1.Date of occurrence of the event:2010/08/25] [FORM 6-K August 25, 2010 United Microelectronics Corporation ——————————————————————————————————— No. 3 Li Hsin Road II ——————————————————————————————————— x x n/a United Microelectronics Corporation Chitung Liu Chitung Liu Chief Financial Officer Description 99 6K on 20100825 amendment 6-K 1 htm_5244.htm LIVE FILING]