Apex International (TPE:4927) posted a net loss attributable to owners of NT$822.6 million in the first quarter, or NT$3.10 per basic share, according to a Wednesday disclosure on the Taiwan Exchange.
Shares slid nearly 1% in Thursday's late morning trade.
The manufacturer of PPE gloves did not provide comparative year-ago figures.
Operating revenue amounted to NT$2.76 billion, it said.