WhiteBox, a subsidiary, has appointed Ishiyama Masayuki (石山正之) as its new representative director. The appointment is effective 18 September 2026, and Ishiyama will oversee business expansion and stronger management, drawing on his experience as a director.
WhiteBox is a 100%-owned subsidiary of 情報戦略テクノロジー that operates a platform for SI/SES businesses. The company announced that Ishiyama Masayuki (石山正之) has become its new representative director. The appointment is effective 18 September 2026, and Ishiyama has a track record of leading management initiatives as a director.
Since joining a company in 2000, Ishiyama Masayuki (石山正之) has served as a founding vice president and representative director and president at multiple companies, and has been involved in business launches and IPOs since 2015. Since becoming a director of WhiteBox in January 2025, he has led the company’s business development and strengthened its sales capabilities. He will now move into the representative director role.
Under the new management structure, the company aims to expand its service offerings and increase the value it delivers to customers by strengthening WhiteBox’s platform infrastructure and its ability to implement advanced technologies. Ishiyama, as the new representative director, will steer management toward growth across the group and higher corporate value.
WhiteBox is based in Shibuya, Tokyo, and operates services including the WhiteBox SaaS platform for SI/SES businesses. Its future strategy calls for business expansion and an enhanced user experience through the use of a robust platform and innovative technologies.