Kioxia

A Japanese memory company focused on NAND flash, 3D flash-memory technology and solid-state storage for consumer, enterprise and data-center applications.

JapanNAND flash memory and solid-state drives3D NAND flash memory

Company Snapshot

Founded: 2019
Headquarters: Tamachi Station Tower S, 3-1-21 Shibaura, Minato-ku, Tokyo 108-0023, Japan
Capital: ¥31.284 billion
Latest net sales: ¥2,337.6 billionFY ended March 2026, consolidated revenue
Primary focus: 3D NAND flash memory
Value-chain position: Memory integrated device manufacturer

Head Office

Tamachi Station Tower S, 3-1-21 Shibaura, Minato-ku, Tokyo 108-0023, Japan

Manufacturing Sites

Mie — Yokkaichi City (Yokkaichi Plant)
Iwate — Kitakami City (Kitakami Plant, Kioxia Iwate)

Company Overview

Kioxia develops, manufactures and sells flash memory and solid-state drives. The business traces its technology heritage to the invention of NAND flash memory at Toshiba in 1987 and now centers on BiCS FLASH three-dimensional memory.

Large-scale manufacturing is concentrated at the Yokkaichi Plant in Mie Prefecture and the Kitakami Plant in Iwate Prefecture. These sites are developed in cooperation with Western Digital through long-standing flash-memory manufacturing joint ventures.

SEMISTRUCTURE VIEW

Kioxia is strategically important because memory manufacturing combines extreme capital intensity, rapid technology transitions and commodity-like pricing cycles. Its domestic mega-fabs also anchor wide networks of equipment, materials, construction and technical-service suppliers.

Technology & Products

BiCS FLASH 3D memory

Vertically stacked NAND flash for high-density storage.

Client SSDs

Solid-state drives for personal computers and client devices.

Enterprise and data-center SSDs

Storage products designed for servers and cloud infrastructure.

Embedded flash products

Memory for smartphones, automotive and connected devices.

Removable memory

Flash-memory products for consumer and professional applications.

Memory technology and controllers

Device, interface and controller technologies supporting storage systems.

Position in the Supply Chain

Kioxia converts silicon wafers through hundreds of deposition, etch, lithography, cleaning and inspection steps into 3D NAND devices, then combines memory and controller technologies into storage products.

Strategic Position

Manufacturing scale, process integration, 3D NAND architecture and joint investment with Western Digital support competitiveness. The company must continuously balance bit-cost reduction with capital discipline and market demand.

Ecosystem Impact

Yokkaichi and Kitakami are major customers for Japanese wafer-fab equipment, silicon wafers, process chemicals, gases, quartz, vacuum systems and cleanroom infrastructure. Capacity investment has broad regional and national supply-chain effects.

Outlook

Growth Drivers

AI data-center storage demand
Long-term growth in data generation
Higher flash content in devices and vehicles
Technology transitions to higher-layer 3D NAND

Risks

Severe NAND pricing and inventory cycles
High capital expenditure and depreciation
Technology-ramp and yield risk
Customer and joint-venture dependencies

Key Points to Watch

NAND pricing and shipment growth
Yokkaichi and Kitakami utilization
BiCS FLASH generation transitions
Enterprise SSD and data-center mix

Official Sources

Official company information ↗Official manufacturing or business information ↗

Editorial note: This independent profile is based primarily on company-published information. Business conditions and plans may change. SemiStructure is not affiliated with the company, and this page does not constitute investment advice.