Toshiba Corp is in talks to sell a 36 percent stake in its U.S. nuclear power unit Westinghouse

Toshiba Corp President and Chief Executive Norio Sasaki speaks during a news conference in Tokyo, in this May 17, 2012 file picture. Toshiba Corp is in talks to sell a 36 percent stake in its U.S. nuclear power unit Westinghouse, though the Japanese firm is in no rush to divest that portion of the company, Toshiba's top executive Sasaki on December 28, 2012.