Ken Sobajima

I could not independently verify a public profile, LinkedIn page, headshot, education history, or current title for Ken Sobajima from primary public sources. The supplied email address and phone number also could not be verified from public sources, so they are not included as verified contact details.

The relevant firm-level match is KDDI Open Innovation Fund, KDDI Corporation's corporate venture capital program. KDDI states that the fund aims for business co-creation with startups by using KDDI group resources and pursuing business collaborations across a wide range of areas.

KDDI Open Innovation Fund is operated by members of KDDI Corporation and Global Brain Corporation, with locations in Tokyo and San Francisco. KDDI reports that the fund had invested in 155 startups as of May 28, 2026, excluding fund-of-funds investments.

• KDDI describes the fund's concept as: "We aim for business co-creations with startups by leveraging various KDDI group resources, and business collaborations in a wide range of areas."
• KOIF V was established in April 2025 with Global Brain and invests across fields where KDDI has business and technology expertise, including AI and DeepTech.
• KOIF III was established in April 2018 with Global Brain and invests in fields including AI, IoT, Data Marketing, Fintech, and B2B SaaS.
• The fund's stated focus areas include AI, DeepTech, Mobility, Robotics, and other adjacent sectors.
• Fund targets are described as IT venture businesses or startup companies in Japan and other countries; KOIF V specifically targets startups with potential to become seeds for KDDI's new business ventures.