UMC Reports Sales for December 2013

Taipei, Taiwan, January 9, 2014--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of December 2013.

Revenues for December 2013

Period	2013	2012	Y/Y Change	Y/Y (%)
December	9,905,479	8,711,595	+1,193,884	+13.70%
Jan.-Dec.	123,811,636	115,674,763	+8,136,873	+7.03%

(*) 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.