UMC Reports Sales for March 2015

Taipei, Taiwan, April 10, 2015--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of March 2015.

Revenues for March 2015

Period	2015	2014	Y/Y Change	Y/Y (%)
March	12,710,166	11,289,431	+1,420,735	+12.58%
Jan.-Mar.	37,649,644	31,693,585	+5,956,059	+18.79%

(*) 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.