UMC Reports Sales for May 2017

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

Revenues for May 2017

Period	2017	2016	Y/Y Change	Y/Y (%)
May	12,512,276	12,705,227	-192,951	-1.52%
Jan.-May	61,856,496	57,873,709	+3,982,787	+6.88%

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

聯華電子股份有限公司本（九）日公佈內部自行結算之2017年度五月份合併營收為新台幣125.12億元，較去年同期減少1.52%。

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