United Microelectronics Corporation (NYSE:UMC; TWSE:2303) (“UMC”), today reported unaudited net sales for the month of May 2018.

Revenues for May 2018

                          Period     2018     2017     Y/Y Change     Y/Y (%) May     13,075,480     12,512,276     +563,204     +4.50% Jan.-May     62,984,613     61,856,496     +1,128,117     +1.82%                

(*) 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.

View source version on businesswire.com: https://www.businesswire.com/news/home/20180607006379/en/

UMCInvestor RelationsMichael Lin / David Wong, + 886-2-2658-9168, ext. 16900jinhong_lin@umc.comdavid_wong@umc.com