United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of November 2017.

Revenues for November 2017

Period     2017       2016       Y/Y Change       Y/Y (%)     November     12,154,717       12,914,936       -760,219       -5.89% Jan.-Nov.     138,617,023       135,312,364       +3,304,659       +2.44%

(*) 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.

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UMCInvestor RelationsMichael Lin, + 886-2-2658-9168, ext. 16900jinhong_lin@umc.comorDavid Wong, + 886-2-2658-9168, ext. 16900david_wong@umc.com