- CEO
- Hidehito Takahashi
- Full Time Employees
- 23,936
- Sector
- Basic Materials
- Industry
- Chemicals
- Address
- 13-9, Shiba Daimon 1-Chome Tokyo Japan 105-8518
- IPO Date
- Jun 1, 2011
- Business
- Resonac Holdings Corporation operates as a holding company for the Resonac Group, a diversified Japanese chemical manufacturer focused on advanced materials, petrochemicals, and electronics components. The group produces high-purity gases, solvents, and CMP slurries for semiconductor frontend processes; semiconductor-related materials, display materials, and anti-charging agents for backend processes; base and photosensitive materials for printed wiring boards; hard disks, SiC, and optical semiconductors for electronic device components; molded plastics, sheet-formed products, powder metal products, and aluminum components for automotive applications; lithium-ion battery materials including carbon products and vapor-grown carbon fiber; ceramics, functional resins, chromatography products, functional monomers, resins, adhesives, and tapes for innovation materials; basic chemicals, industrial gases, elastomers, and cosmetic ingredients; graphite electrodes; and other specialty chemicals. Resonac conducts operations across Japan, China, the rest of Asia, North America, and Europe, with approximately 23,800 employees and 2024 revenue of around $8.8 billion.
Founded in 1939 and headquartered in Tokyo Shiodome Building, 1-9-1 Higashi-Shimbashi, Minato-ku, Tokyo, Japan, the company serves industries including semiconductors, mobility, healthcare, energy storage, and environmental solutions, targeting electronics manufacturers, automakers, and industrial clients globally.
In January 2023, Showa Denko K.K. merged with Showa Denko Materials Co., Ltd. (formerly Hitachi Chemical, acquired in 2019 for $8.8 billion) to form Resonac Holdings Corporation and Resonac Corporation, enhancing capabilities in lithium-ion batteries, semiconductors, and advanced materials. Recent developments include the August 2025 agreement to sell its FIAMM Energy Technology subsidiary, a battery business with €377 million in 2024 revenue, to AURELIUS Private Equity; the July 2024 launch of the US-JOINT consortium with nine partners for semiconductor back-end R&D in a new Silicon Valley facility operational in 2025; and a 2024 collaboration with Neste and Marubeni for renewable olefins production using Neste RE feedstock.