 | |
 Kioxia's headquarters at Msb Tamachi Station Tower S inShibaura, Tokyo | |
| Formerly | Toshiba Memory Holding Corporation (March–October 2019) |
|---|---|
| Company type | Public |
| Industry | Electronics |
| Predecessors | |
| Founded | March 1, 2019; 6 years ago (2019-03-01) |
| Headquarters | Shibaura, Minato, Tokyo, Japan |
Area served | Worldwide |
Key people | Nobuo Hayasaka (President andCEO) |
| Products | |
| Revenue |  ¥1.53 trillion (FY2021) |
| Owners |
|
Number of employees | c. 15,300 (2023) |
| Website | |
| Footnotes / references [1] | |
Kioxia Holdings Corporation (/kiˈoʊksiə/)[2] is a Japanesemultinationalcomputer memory manufacturer headquartered inTokyo, Japan. The company wasspun off from theToshiba conglomerate in June 2018 and gained its current name in October 2019;[3][4] it is currently majority owned byBain Capital, which holds a 51.1% stake, while Toshiba holds a 30.5% stake.Hoya holds another 3% stake.[5]
In the early 1980s, while still part of Toshiba, the company was credited with inventingflash memory.[6] As of the second quarter of 2021, the company was estimated to have 18.3% of the global revenue share forNAND flashsolid-state drives.[7]
Kioxia is a combination of the Japanese wordkioku meaningmemory and the Greek wordaxia meaningvalue.[4]
In 1980,Fujio Masuoka, an engineer at Kioxia predecessor Toshiba, invented flash memory,[8][9] and in 1984, Masuoka and his colleagues presented their invention ofNOR flash.[10]
In January 2014, theToshiba Corporation completed its acquisition ofOCZ Storage Solutions,[11] renaming it OCZ and making it a brand of Toshiba.[12]
On June 1, 2018, due to heavy losses experienced by the bankruptcy of theWestinghouse subsidiary of former parent company Toshiba over nuclear power plant construction atVogtle Electric Generating Plant in 2016, Toshiba Memory Corporation (東芝メモリ株式会社,Tōshiba Memori Kabushikigaisha) was spun off from the Toshiba Corporation.[citation needed] Toshiba maintained a 40.2% equity in the new company.[3][13] The new company consisted of all of Toshiba memory businesses. Toshiba Memory Corporation became a subsidiary of the newly formed Toshiba Memory Holdings Corporation on March 1, 2019.[14]
In June 2019, Toshiba Memory Holdings Corporation experienced a power cut at one of its factories in Yokkaichi, Japan, resulting in the loss of at least 6exabytes of flash memory, with some sources estimating the loss as high as 15 exabytes.Western Digital (laterSandisk) used (and still uses) Kioxia's facilities for making its own flash memory chips.[15][16]
On August 30, 2019, the company announced that it signed a definitive agreement to acquire Taiwanese electronics manufacturerLite-On's SSD business forUS$165 million.[17] The acquisition closed on July 1, 2020.[18]
On July 18, 2019, Toshiba Memory Holdings Corporation announced it would change its name to Kioxia on October 1, 2019, including all Toshiba memory companies. On October 1, 2019, Toshiba Memory Holdings Corporation was renamed Kioxia Holdings Corporation and Toshiba Memory Corporation was renamed Kioxia Corporation.[3] This renaming also included companies associated with Toshiba's solid-state drive brandOCZ.[19]
In February 2022, Kioxia andWestern Digital reported that contamination issues have affected the output of their flash memory joint-production factories, with WD admitting that at least 6.5 exabytes of memory output being affected. The Kiakami and Yokkaichi factories in Japan stopped producing due to the contamination.[20]
As of July 04, 2025, Kioxia ownership is as follows:[5]
Kioxia Holdings Corporation is theholding company of Kioxia Corporation. Kioxia Corporation is the parent company of several companies including Kioxia Systems Company, Kioxia Advanced Package Corporation, Kioxia America, and Kioxia Europe.[13]
