Posco Future M (KRX:003670) signed a 671.0 billion won supply contract with a global automaker for natural graphite anode materials for secondary batteries, according to a Tuesday filing with the Korea Exchange.

The deal, which runs through Sept. 30, 2031, and represents 18.1% of the company's 2024 sales, involves the supply of goods to overseas markets, the filing said.

Shares of Posco Future M rose nearly 6% at market close.