[www.umc.com Description 99.1 Announcement on 2015/10/01: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2015/10/01: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2015/10/02: Represent subsidiary United Semiconductor (Xiamen) Co., Ltd.to announce related materials on acquisition of machinery and equipment 99.4 Announcement on 2015/10/07: Represent subsidiary NexPower Technology CORP. to] [FORM 6-K October 26, 2015 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 10/26/2015 6-K 1 htm_9809.htm LIVE FILING]

[Description 99.1 Announcement on 2015/08/27: To announce accumulative shares repurchased exceeding NTD$300 million in value 99.2 Announcement on 2015/09/02: UMC will attend investor conferences on 2015/09/09 99.3 Announcement on 2015/09/02: Represent subsidiary United Semiconductor (Xiamen) Co., Ltd.to announce related materials on acquisition of facilities and equipment 99.4 Announcement on 2015/09/03: To announce accumulative shares repurchased exceeding NTD$300 million in value] [FORM 6-K September 24, 2015 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 09/24/2015 6-K 1 htm_9739.htm LIVE FILING]

[Description 99.1 Announcement on 2015/07/29: Important Resolutions from 13th term 2nd Board Meeting 99.2 Announcement on 2015/07/29: Board’s Resolution of share repurchase program 99.3 Announcement on 2015/07/29: To announce unconsolidated operating results for the second quarter of 2015 99.4 Announcement on 2015/08/06: To announce related materials on acquisition of machinery and equipment 99.5 Announcement on 2015/08/06: To announce related materials] [FORM 6-K August 26, 2015 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 08/26/2015 6-K 1 htm_9673.htm LIVE FILING]

[UNITED MICROELECTRONICS CORPORATION AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS FOR THE SIX-MONTH PERIODS ENDED JUNE 30, 2015 AND 2014 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 consolidated financial statements have been prepared originally in Chinese. In the event of a conflict between these financial statements and the] [United Microelectronics Corporation Chitung Liu Chief Financial Officer 6-K 1 umcfs2q15_6k.htm FORM 6-K]

[Description 99.1 Announcement on 2015/07/01: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2015/07/02: Represent subsidiary United Semiconductor (Xiamen) Co., Ltd.to announce related materials on acquisition of facilities and equipment 99.3 Announcement on 2015/07/09: To announce the impairment of financial assets by applying IAS 39. 99.4 Announcement on 2015/07/21: To announce related materials on acquisition] [FORM 6-K July 28, 2015 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 07/28/2015 6-K 1 htm_9602.htm LIVE FILING]

[Description 99.1 Announcement on 2015/05/27: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2015/05/29: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2015/06/05: Represent major subsidiary UMC Group (USA) to announce the change of President 99.4 Announcement on 2015/06/08: To announce related materials on acquisition of machinery and equipment 99.5] [FORM 6-K June 25, 2015 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 06/25/2015 6-K 1 htm_9545.htm LIVE FILING]