Toshiba Corp. said Friday it is preparing for a swift return to the Tokyo Stock Exchange's first section, following its 2017 demotion on massive losses from its bankrupt U.S. nuclear unit, to raise capital for future investments.

"Toshiba intends to apply for its return to the First Section as soon as possible," the conglomerate, whose shares are currently listed on the second section, said in a statement. The company could apply for the transfer as early as next February.

"Toshiba will continue to ensure effective execution of measures to improve its internal controls ... and also work to strengthen them further," the company said.