UMC Reports Sales for December 2017

Taipei, Taiwan -- January 9, 2018 -- United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of December 2017.

Revenues for December 2017

Period	2017	2016	Y/Y Change	Y/Y (%)
December	10,667,683	12,557,760	-1,890,077	-15.05%
Jan.-Dec.	149,284,706	147,870,124	+1,414,582	+0.96%

(*) 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.