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Primerock Investment
合同会社プライムロック・インベストメント is a capital-strategy partner that forms and manages investment funds and provides support through to stock-price formation.
Primerock Investment
合同会社プライムロック・インベストメント is a capital-strategy partner that forms and manages investment funds and provides support through to stock-price formation. Unlike hands-on VCs, it generally does not take a direct role in investee-company management. It sets up dedicated funds for investees, supports their growth, and continues post-IPO support such as stock-price formation assistance. Business lines include fund management, third-party allotment underwriting, financial consulting, and full outsourcing of accounting/admin including CFO work.
General information
Firm type
Private Equity
Year founded
2016
Location
Region
Asia
Country
Japan
City
Tokyo
Corporate office
2-21-1 Shibuya, Hikarie Shibuya 8F Creative Lounge MOV, Shibuya-ku, Tokyo 150-0002, Japan
Principals
Kentaro Sugihara
Representative Partner
Sector focus
Frequently asked questions
What is Primerock Investment's known portfolio track record?
Primerock led the VC round for Headwaters, which listed on the Tokyo Stock Exchange Mothers market in September 2020 and recorded the market’s highest-ever first-day price jump — an 11.9x increase over its IPO price. Other confirmed holdings include IDOM CaaS Technology (automotive subscriptions), Welmo (elderly-care DX), WASD (storefront DX), Connected Commerce (AI cafés), and Keywalker (big data).
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
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