Western Digital Corp. is in talks to merge with Japan’s Kioxia Holdings Corp. in a deal that could unite two technology storage providers, according to a person familiar with the matter.

A deal, which could be worth more than $20 billion, may be reached by mid-September at the earliest if negotiations are successful, the person said, asking not be identified because the matter is private. Talks could still fall apart and Kioxia, which is closely held, is still also pursuing an initial public offering, the person added.

A representative for Western Digital declined to comment. A representative for Kioxia couldn’t be reached for comment.