UMC Reports Sales for March 2018

Taipei, Taiwan, April 10, 2018--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of March 2018.

Revenues for March 2018

Period	2018	2017	Y/Y Change	Y/Y (%)
March	12,412,192	12,751,189	-338,997	-2.66%
Jan.-Mar.	37,497,137	37,417,950	+79,187	+0.21%

(*) 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.