KT (KRX:030200) posted first-quarter net income attributable to shareholders of 352.2 billion won, down 35% from 539.8 billion won a year earlier, according to a Tuesday filing with the Korea Exchange.
The South Korean telecommunications giant's sales fell 1% year over year to 6.778 trillion won from 6.845 trillion won.
Shares of KT rose nearly 2% at market close.