UMC Reports Sales for September 2013

Taipei, Taiwan, October 9, 2013--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of September 2013.

Revenues for September 2013

Period	2013	2012	Y/Y Change	Y/Y (%)
September	10,850,515	9,461,429	+1,389,086	+14.68%
Jan.-Sep.	93,092,892	86,820,410	+6,272,482	+7.22%

(*) 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.