Our Manifesto
We founded CAST Inc. , with the mission of “Sensors Everywhere”.
Measurement is a technology with a very old history, and it continues to evolve. In recent years, IoT and AI have become major trends with the development of communications infrastructure and sophisticated data processing algorithms. However, no matter how much analytical technology develops, the immutable principle of “Garbage In, Garbage Out” never change from the time when we measured weight with a balance. CAST is dedicated to creating sensors accurately acquiring physical quantities using devices and mechanisms based on a deep insight of physical phenomena.
Based on the philosophy of “Sensible Sensing”, CAST contributes to realize a smarter and safer world by providing high-quality and diverse sensors as measurement systems appropriate for the IoT era.
CEO Kei Nakatsuma
Company Profile
Company Name CAST Inc.
Established in September 2019
CEO Kei Nakatsuma, Ph.D
Our Business Research, development, manufacture and sales of sensors
and peripheral equipment and software.
Capital 99,979,000 yen
Location Registered Office：5-7-6,Toroku,Chuo-ku,Kumamoto-shi,
Kumamoto, Japan
Company Timeline
Development of core technology
Founded CAST Co.
Product Information Released and
Article published in Japanese Economics Newspaper
2017
2021
2000
2019
2022
Establish basic technology Commencement of commercialization activities
Started plantoperations in
Aichi Prefecture
Our Team
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Director
Akifumi Matsuo
After graduating from the Faculty of Law at Kumamoto University, he joined Higo Bank, where he was mainly involved in corporate sales, planning, and internal control work.
Since April 2024, he has been in charge of investing in and supporting startups and creating university-based ventures at Higin Capital.
In August 2024, he became a director of CAST Co., Ltd.
Auditor
Munehiro Inoue
After completing graduate school, he worked in software development.
Later, after working for a major audit firm, he experienced being a CFO of a venture company. Currently, he is supporting companies as a certified public accountant and tax accountant who understands IT.
In August 2023, he was appointed as an auditor of CAST Inc.
Engineer
Kyosuke Tsutsumi
After graduating from Kumamoto University Graduate School, engaged in prototype design and evaluation work at a major electrical equipment manufacturer.
Engineer
Yuya Tanaka
After graduating from Kumamoto University Graduate School, he engaged in factory line design and start-up work at a major in-vehicle parts manufacturer.
Engineer
Sho Kimura
Entered the graduate school of Kumamoto University from Kumamoto National College of Technology. After completing studies, worked for a major telecommunications carrier company before assuming current position. At the graduate school, received a master's degree on the theme of our company's fundamental technology.
Co-founder, President
Kei Nakatsuma, Ph.D
Graduated from the Department of Numerical Engineering, Faculty of Engineering, the University of Tokyo, and obtained a doctorate (Information Science and Engineering) from the Graduate School of Information Science and Engineering. Assistant Professor, Graduate School of Advanced Sciences, Kumamoto University.
In September 2019, co-founded CAST
Inc. and assumed office as CEO
Director
Hiroshi Urata
After graduating from university, experienced in lending and venture investment at Higo Bank and group company, Higin Capital.In April 2023, became a director of CAST Inc.
In April 2023, he became a director of CAST Inc.
Director
Fumiharu Muroga
Experienced in all aspects of VC work for 15 years; moved to Euglena, a portfolio company, in 2014 and formed a real tech fund specializing in supporting technology startups in 2015.
In August 2024, he became a director of CAST Inc.
経営
市場開拓室
Engineer
Tomoki Tanaka
After completing graduate school, worked in software development at an affiliate of a major telecommunications construction company.
Engineer
Naoko Hashimoto
Born in Kumamoto Prefecture. After graduating from university, Sh was engaged in chassis design and performance verification work at a refrigeration equipment manufacturer.
Engineer
Shigeru Wada
After completing graduate school, I worked for a semiconductor manufacturer in Kumamoto Prefecture as a microcomputer circuit designer.
After that, I worked for a company as a system designer and experienced in-house SE work at a retail store.
Engineer
Kensei Watanabe
After graduating from Kumamoto National College of Technology, he worked in web application development at a system development company. Joined CAST as a software developer and information systems officer.
経営戦略室
Sales manager
Daichi Saito
After working for a major manufacturer-based SIer, he worked in business development as head of sales in Japan for a foreign software company before joining CAST in May 2025.
Sales and Management Strategy Office
Yoshiko Watanabe
Engaged in sales in the construction industry, starting with the sales promotion department of a major publishing company, and in BPO business MG positions at companies centered on startups. After gaining independent experience, joined CAST as a salesperson.
Sales and Management Strategy Office
Muneyuki Kitagawa
Born in Kumamoto Prefecture. After graduating from University, worked for a corporation related to the dairy industry, selling materials and making proposals to improve customer management. After gaining independent experience, joined CAST as a salesperson.
Corporate
Yayoi Watanabe
After graduating from university, worked as a librarian and a university employee. Afterthat, she gained experience as an office and sales executive at a manufacturing company. She is involved in clerical, managerial and design work at CAST.
技術顧問
Co-founder/Technical advisor
Makiko Kobayashi, Ph.D
Graduated from Chiba University and obtained a doctorate from McGill University, Canada. Professor, Faculty of Advanced Sciences, Kumamoto University.
Co-founded CAST Inc., Ltd. in September 2019.