UMC Reports Sales for September 2025

TAIPEI, Taiwan--(BUSINESS WIRE)-- United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of September 2025.

Revenues for September 2025
Period	2025	2024	Y/Y Change	Y/Y (%)
September	19,927,175	18,942,714	984,461	5.20%
Jan.-Sep.	175,743,654	171,916,474	3,827,180	2.23%
(*) 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/20251007848380/en/

Michael Lin / David Wong

UMC, Investor Relations

Tel: + 886-2-2658-9168, ext. 16900

Email: jinhong_lin@umc.com

david_wong@umc.com

Source: United Microelectronics Corporation