UMC Reports Sales for May 2022

Taipei, Taiwan, June 7, 2022--United Microelectronics Corporation (NYSE: UMC; TWSE: 2303) (“UMC”), today reported unaudited net sales for the month of May 2022.

Revenues for May 2022

Period	2022	2021	Y/Y Change	Y/Y (%)
May	24,433,030	17,189,070	+7,243,960	+42.14%
Jan.-May	110,652,311	80,668,140	+29,984,171	+37.17%

(*) 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.