United Microelectronics Corporation (NYSE: UMC) reported net sales of NT$22.94 billion for May 2026, representing a 17.78% increase from NT$19.48 billion in May 2025, according to the company's unaudited financial statement.

For the five-month period from January through May 2026, UMC recorded consolidated net sales of NT$106.65 billion, up 9.05% from NT$97.79 billion in the same period of 2025.

The Taiwan-based semiconductor foundry released the monthly sales figures as part of its regular financial reporting. All revenue figures are presented in thousands of New Taiwan Dollars and represent consolidated results.

UMC operates as a contract semiconductor manufacturer, providing foundry services to fabless semiconductor companies and integrated device manufacturers worldwide.