https://www.theregister.co.uk/2017/09/21/toshiba_sells_to_bain_consortium/

Toshiba has picked Bain Capital Private Equity as the buyer of its memory business and jilted suitor Western Digital has immediately tried to stop the transaction happening.

This story starts in the year 2006 when Toshiba acquired Westinghouse Electric in the hope it could grow a nuclear power business. It couldn't and in 2017 Westinghouse filed for bankruptcy, dragging Toshiba down to a colossal loss along the way. The Japanese company therefore decided to offload subsidiary Toshiba Memory Corporation (TMC) to raise some much-needed cash.