Kioxia

{{short description|Japanese multinational computer memory manufacturer}}

{{Infobox company

| name = Kioxia Holdings Corporation

| image_caption = Kioxia's headquarters at Msb Tamachi Station Tower S in Shibaura, Tokyo

| native_name =

| native_name_lang = ja

| type = Public

| traded_as = {{plainlist|

{{TYO|285A0}}

}}

| former_names = Toshiba Memory Holding Corporation (March–October 2019)

| predecessors = {{Unbulleted list

| Indilinx

| OCZ

| Toshiba

}}

| owners = {{plainlist|

}}

| logo = Kioxia.svg{{!}}class=skin-invert

| image = Tamachi Sta. Tower S.jpg

| area_served = Worldwide

| industry = Electronics

| products = {{Unbulleted list

| Flash memory

| Solid-state drives

}}

| foundation = {{start date and age|2019|03|01}}

| revenue = {{increase}} {{JPY|1.53 trillion|link=yes}} (FY2021)

| num_employees = {{circa|15,300}} (2023)

| hq_location = Shibaura

| location_city = Minato, Tokyo, Japan

| key_people = Nobuo Hayasaka (President and CEO)

| homepage = {{ubl

| {{url|https://www.kioxia-holdings.com/en-jp/top.html|kioxia-holdings.com}}

| {{url|https://www.kioxia.com/|kioxia.com}}

}}

| footnotes = {{cite web |url=https://www.kioxia-holdings.com/en-jp/about/glance.html |title=KIOXIA at a Glance |access-date=21 April 2023 |website=Kioxia Holdings Corporation}}

}}

Kioxia Holdings Corporation ({{IPAc-en|k|i|ˈ|oʊ|k|s|i|ə}}){{Cite web |date=October 4, 2019 |title=How to say KIOXIA |url=https://www.youtube.com/watch?v=U4OMBtZIWJ8 |access-date=September 20, 2020 |publisher=Kioxia}} is a Japanese multinational computer memory manufacturer headquartered in Tokyo, Japan. The company was spun off from the Toshiba conglomerate in June 2018 and gained its current name in October 2019;{{Cite web |date=2019-05-20 |title=Toshiba Memory to Buy Out Shares From Apple, Dell |url=https://www.wsj.com/articles/toshiba-memory-to-buy-out-shares-from-apple-dell-11558348574 |access-date=2020-08-18 |website=Wall Street Journal |language=en}} it is currently majority owned by Bain Capital, which holds a 51.1% stake, while Toshiba holds a 30.5% stake. Hoya holds another 3% stake.{{cite web |url=https://www.kioxia-holdings.com/en-jp/ir/stock/outline.html |title=Stock Information |access-date=July 4, 2025 |website=Kioxia Holdings Corporation}}

In the early 1980s, while still part of Toshiba, the company was credited with inventing flash memory.{{Cite web |date=2018-08-13 |title=Unloved Toshiba Stock Is About to Reward Suitors Again |url=https://www.wsj.com/articles/unloved-toshiba-stock-is-about-to-reward-suitors-again-11597297711 |access-date=2020-08-18 |website=The Wall Street Journal}} As of the second quarter of 2021, the company was estimated to have 18.3% of the global revenue share for NAND flash solid-state drives.{{cite web |title=DRAMeXchange - 【Market View】NAND Flash Revenue for 2Q21 Rises by 10.8% QoQ Due to Strong Notebook Demand and Procurements for Data Centers, Says TrendForce |url=https://www.dramexchange.com/WeeklyResearch/Post/2/11050.html |access-date=13 November 2021 |website=www.dramexchange.com}}

Name

Kioxia is a combination of the Japanese word kioku meaning memory and the Greek word axia meaning value.{{Cite web |date=2019-07-19 |title=Former Toshiba memory business to rebrand as Kioxia |url=https://www.zdnet.com/article/former-toshiba-memory-business-to-rebrand-as-kioxia/ |access-date=2020-03-09 |publisher=ZDNet}}

History

In 1980, Fujio Masuoka, an engineer at Kioxia predecessor Toshiba, invented flash memory,{{patent|US|4531203|Fujio Masuoka}}{{US patent|4531203|Semiconductor memory device and method for manufacturing the same}} and in 1984, Masuoka and his colleagues presented their invention of NOR flash.{{Cite book |last1=Masuoka |first1=F. |last2=Asano |first2=M. |last3=Iwahashi |first3=H. |last4=Komuro |first4=T. |last5=Tanaka |first5=S. |title=1984 International Electron Devices Meeting |chapter=A new flash E²PROM cell using triple polysilicon technology |date=December 1984 |pages=464–467 |doi=10.1109/IEDM.1984.190752|s2cid=25967023 }}

In January 2014, the Toshiba Corporation completed its acquisition of OCZ Storage Solutions,{{Cite web |date=21 January 2014 |title=Toshiba Corporation Completes Acquisition of OCZ Technology Group's Assets and Launches New Subsidiary, OCZ Storage Solutions |url=https://finance.yahoo.com/news/toshiba-corporation-completes-acquisition-ocz-001000861.html |access-date=27 January 2025 |website=Yahoo Finance}} renaming it OCZ and making it a brand of Toshiba.{{Cite magazine |last=Martyn Williams |title=It's official: Toshiba owns OCZ's SSD business |url=http://www.pcworld.com/article/2090061/toshiba-completes-acquisition-of-ocz-storage.html |magazine=PCWorld |access-date=20 March 2014}}

On June 1, 2018, due to heavy losses experienced by the bankruptcy of the Westinghouse{{which|date=November 2021}} subsidiary of former parent company Toshiba over nuclear power plant construction at Vogtle Electric Generating Plant in 2016, {{Nihongo|Toshiba Memory Corporation|東芝メモリ株式会社|Tōshiba Memori Kabushikigaisha}} was spun off from the Toshiba Corporation. Toshiba maintained a 40.2% equity in the new company.{{Cite web |title=Company information | KIOXIA |url=https://www.kioxia-holdings.com/en-jp/about/company.html |website=www.kioxia-holdings.com}} 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.{{Cite web |date=March 1, 2019 |title=Establishment of Toshiba Memory Holdings Corporation |url=https://global.toshiba-memory.com/tmchd-news-20190301-1-e.html |url-status=dead |archive-url=https://web.archive.org/web/20190906171305/https://global.toshiba-memory.com/tmchd-news-20190301-1-e.html |archive-date=September 6, 2019 |access-date=September 6, 2019}}

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 6 exabytes of flash memory, with some sources estimating the loss as high as 15 exabytes. Western Digital used (and still uses) Kioxia's facilities for making its own flash memory chips.{{Cite web |title=Power outage causes Toshiba and Western Digital to lose 6 exabytes of NAND |url=https://www.techspot.com/news/80746-power-outage-causes-toshiba-western-digital-lose-6.html |website=TechSpot|date=July 2019 }}{{Cite web |title=Power outage may have ruined 15 exabytes of WD and Toshiba flash storage |url=https://appleinsider.com/articles/19/07/01/power-outage-may-have-ruined-15-exabytes-of-wd-and-toshiba-memory |website=AppleInsider|date=July 2019 }}

On August 30, 2019, the company announced that it signed a definitive agreement to acquire Taiwanese electronics manufacturer Lite-On's SSD business for {{USD|165 million}}.{{Cite web |last=Duckett |first=Chris |date=2 September 2019 |title=Toshiba Memory picks up Lite-On SSD business in $165 million deal |url=https://www.zdnet.com/article/toshiba-memory-picks-up-lite-on-ssd-business-in-165-million-deal/ |access-date=20 November 2019 |website=ZDNet}} The acquisition closed on July 1, 2020.{{cite web

|url=https://www.kioxia-holdings.com/en-jp/news/2020/20200630-1.html |title=Kioxia to Complete Acquisition of LITE-ON Technology's SSD Business

|date=June 30, 2020 |website= Kioxia |access-date=March 29, 2021 }}

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. This renaming also included companies associated with Toshiba's solid-state drive brand OCZ.{{Cite web |title=Toshiba Memory will rebrand itself as Kioxia by October this year (Updated) |url=https://www.hardwarezone.com.sg/tech-news-toshiba-memory-will-rebrand-itself-kioxia-october-year-updated |access-date=2020-03-18 |website=www.hardwarezone.com.sg |language=en}}

In February 2022, Kioxia and Western 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.{{cite news |last=King |first=Ian |url=https://www.bloomberg.com/news/articles/2022-02-09/western-digital-kioxia-say-contamination-hurt-chip-production |title=Western Digital, Kioxia Say Contamination Hurt Chip Output |work=Bloomberg News |date=2022-02-09 |accessdate=2022-02-11 }}

Corporate affairs

As of July 04, 2025, Kioxia ownership is as follows:

= Subsidiaries =

Kioxia Holdings Corporation is the holding 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.