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Kioxia

Category: AI Infrastructure

Japanese NAND flash memory and SSD manufacturer (formerly Toshiba Memory Corporation), a top-three global NAND supplier and inventor of flash memory, publicly listed on the Tokyo Stock Exchange since December 2024. Kioxia was founded in 2017. The company is led by Hiroo Ota. Based in Minato-ku, Tokyo, Japan. Total funding raised: ~$800M. Latest round: IPO. Key investors include Bain Capital, Toshiba, SK Hynix (minority stake), Hoya (minority stake).

Founded
2017
Headquarters
Minato-ku, Tokyo, Japan
Total funding
~$800M

Value proposition

World-leading NAND flash memory and SSD maker delivering high-capacity, high-performance storage essential for AI data centers, with innovations such as the first direct-liquid-cooled PCIe 5.0 datacenter SSD (NX1 Series) to address AI server thermal challenges.

Products and solutions

3D Flash Memory "BiCS FLASH", NX1 Series direct-liquid-cooled PCIe 5.0 datacenter SSDs (E1.S form factor, 1.92TB-15.36TB), Enterprise/Data Center SSDs, Client SSDs, UFS & e-MMC for consumer/industrial/automotive, XL-FLASH Storage Class Memory, KIOXIA AiSAQ open-source technology

Unique value

Inventor of NAND flash memory (1987) with world-leading 3D flash (BiCS FLASH) manufacturing scale and the first direct-liquid-cooled datacenter SSD for AI servers.

Target customer

Hyperscale and enterprise data centers, cloud providers, AI server builders, automotive OEMs, mobile device makers, and industrial/consumer electronics manufacturers.

Industries served

Data centers, AI/hyperscale computing, enterprise storage, automotive, mobile/consumer electronics, industrial

Technology advantage

Inventor of NAND flash; world-leading 3D flash memory (BiCS FLASH) with CMOS-directly-bonded-to-array (CBA) technology; massive manufacturing scale at Yokkaichi and Kitakami plants; first direct-liquid-cooled PCIe 5.0 datacenter SSD (NX1) for AI thermal management; long-standing joint development with SanDisk/Western Digital.

How they differentiate

Differentiates through NAND flash invention heritage, world-leading 3D flash manufacturing scale, CBA technology, and early leadership in AI-specific storage innovations like direct-liquid-cooled datacenter SSDs.

Main competitors

Samsung Electronics, SK hynix, Micron Technology, Sandisk

Key partnerships

Sandisk Corporation Flash Ventures JV (Yokkaichi & Kitakami; extended through Dec 2034), Aug 2026: Kioxia-Sandisk plan to invest >$31B (~¥5T) in Japan through 2032 (contingent on govt support), incl. ¥1.8T Kitakami Fab3, Japanese government subsidy for flash memory production, SK Hynix and Hoya as minority shareholders

Notable customers

Apple, Dell Technologies

Major milestones

1987: invented world's first NAND flash memory, 2018: carved out of Toshiba via $18B Bain Capital-led acquisition, Oct 2019: renamed Kioxia, Dec 18, 2024: IPO on Tokyo Stock Exchange raising ~¥120B (~$800M), 2026: launched first direct-liquid-cooled PCIe 5.0 datacenter SSD (NX1 Series), Aug 27, 2026: Kioxia & Sandisk announced >$31B (~¥5T) Japan investment plan through 2032, incl. ¥1.8T Kitakami Fab3.

Growth metrics

Revenue ¥2.34 trillion (FY2025, consolidated); ~15.3% global NAND market share (Q3 2025)

Market positioning

Top-three global NAND flash memory supplier (~15% market share in Q3 2025, per TrendForce), behind Samsung and SK hynix, competing with Micron and SanDisk. Publicly listed on Tokyo Stock Exchange (ticker 285A).

Geographic focus

Global (headquartered in Japan; competes worldwide in NAND flash and SSDs)

Patents and IP

Inventor of NAND flash memory; owns extensive 3D flash memory (BiCS FLASH) and CBA (CMOS directly bonded to Array) technology IP; KIOXIA AiSAQ open-source technology.

About Hiroo Ota

Joined Toshiba in 1985, worked in semiconductor memory division (applied technology and technical marketing) until 2015; Technology Executive of Memory Application Engineering at Toshiba; joined Toshiba Memory (now Kioxia) in 2017; became EVP then President & CEO April 1, 2026.

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