UMC Reports Sales for October 2012

Taipei, Taiwan, November 8, 2012--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”) today reported unaudited net sales for the month of October 2012.

Revenues for October 2012

Period	2012	2011	Y/Y Change	Y/Y (%)	M/M (%)
October	9,280,926	8,255,460	+1,025,466	+12.42%	+1.84%
Jan.-Oct.	89,191,274	89,709,745	-518,471	-0.58%	N/A

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

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