UMC Reports Sales for January 2019

TAIPEI, Taiwan–(BUSINESS WIRE)–United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”),
today reported unaudited net sales for the month of January 2019.

Revenues for January 2019

Period   2019   2018   Y/Y Change   Y/Y (%)
January   11,795,477   13,175,662   -1,380,185   -10.48%
Jan.-Jan.   11,795,477   13,175,662   -1,380,185   -10.48%

(*) 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.

Contacts

Michael Lin / David Wong
UMC, Investor Relations
Tel: +
886-2-2658-9168, ext. 16900
Email: jinhong_lin@umc.com
david_wong@umc.com