UMC Reports Sales for January 2023

Taipei, Taiwan, February 6, 2023 -- United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of January 2023.

Revenues for January 2023

Period	2023	2022	Y/Y Change	Y/Y (%)
January	19,589,515	20,472,766	-883,251	-4.31%
Jan.-Jan.	19,589,515	20,472,766	-883,251	-4.31%

(*) 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 https://www.umc.com.