UMC Reports Sales for September 2018

Taipei, Taiwan, October 9, 2018--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) ("UMC"), today reported unaudited net sales for the month of September 2018.

Revenues for September 2018

Period	2018	2017	Y/Y Change	Y/Y (%)
September	11,855,805	11,865,021	-9,216	-0.08%
Jan.-Sep.	115,735,370	112,654,032	+3,081,338	+2.74%

(*) 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.