SKC (KRX:011790) posted a net loss attributable to owners of the parent of 90.7 billion won in the second quarter, swinging from net income of 3.4 billion won a year earlier.
Sales rose 38.3% to 645.5 billion won from 466.8 billion won for the three months ended June 30, according to a Monday filing with the Korea Exchange.
Shares of the chemical and film manufacturer fell more than 1% in recent trade.