UMC Reports Sales for April 2015

Taipei, Taiwan, May 8, 2015--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of April 2015.

Revenues for April 2015

Period	2015	2014	Y/Y Change	Y/Y (%)
April	13,020,513	11,528,740	+1,491,773	+12.94%
Jan.-Apr.	50,670,157	43,222,325	+7,447,832	+17.23%

(*) 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.