UMC Reports Sales for April 2016

Taipei, Taiwan, May 9, 2016--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of April 2016.

The company's 2015 annual report on Form 20-F, which was filed with the US Securities and Exchange Commission on April 18, 2016, is also now available online at http://www.umc.com/english/investors/Reports/2010-present_report.asp.

Revenues for April 2016

Period	2016	2015	Y/Y Change	Y/Y (%)
April	10,764,403	13,020,513	-2,256,110	-17.33%
Jan.-Apr.	45,168,482	50,670,157	-5,501,675	-10.86%

(*) All figures in thousands of New Taiwan Dollars (NT$), except for percentages.
(**) All figures are consolidated

Additional information about UMC is available on the web at http://www.umc.com.

聯華電子股份有限公司本（九）日公佈內部自行結算之2016年度四月份合併營收為新台幣 107.64 億元，較去年同期減少17.33%。

Additional information about UMC is available on the web at http://www.umc.com.