The completion of the deal, initially aimed for by end-March, had been delayed due to a prolonged review by Chinese antitrust authorities. China approved the deal last month.
The Bain consortium last year won a long and highly contentious battle for Toshiba Memory, the world’s No. 2 producer of NAND chips. Toshiba put the business up for sale after billions of dollars in cost overruns at its Westinghouse nuclear unit had plunged it into crisis.