Hideo Gamou
Managing Director & Managing Executive Officer
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- Full Name
- Hideo Gamou
- Firm
- Mizuho Capital Co., Ltd.
- Firm Type
- Venture capital firm; strategic group company of Mizuho Financial Group
- Investment Stage
- Early, middle, and later-stage companies
- Target Company Profile
- Growth companies seeking equity risk capital, IPO-oriented growth support, venture debt, sector-focused capital, or business-succession/capital-strategy financing
- Sector Focus
- Broad sector coverage; IT/internet, services, bio/healthcare/medical, manufacturing, non-manufacturing, life sciences, fintech, venture debt, business succession/capital strategy, and sixth-sector agriculture-related businesses
- Geographic Focus
- Primarily Japan, with portfolio exposure including Tokyo metropolitan area, Kansai, other domestic regions, and overseas
- Location
- Tokyo, Japan
Background
Public web research did not surface a current, primary-source biography, LinkedIn profile, headshot, education history, or individual deal record for Hideo Gamou. The provided stub associates him with Mizuho Capital, but Mizuho Capital’s current public company profile does not list him among the officers shown as of April 28, 2026.
Mizuho Capital Co., Ltd. is a Tokyo-based venture capital firm established on July 27, 1983. On April 1, 2002, venture-capital companies affiliated with the former three Mizuho predecessor banks were split and merged, creating Mizuho Financial Group’s integrated venture capital company.
The firm positions itself as Mizuho’s core strategic group company for equity-centered risk capital and IPO-oriented business growth support. In its May 2024 president’s message, Mizuho Capital says it has supported nearly 1,000 portfolio companies toward public listings since its founding.
Investment Thesis & Focus
- Mizuho Capital’s main growth-support fund invests broadly across “all industries” and “all stages,” using Mizuho Financial Group’s network to support companies targeting step-change growth.
- The firm is explicitly IPO-oriented: it describes itself as focused on equity risk capital and business growth support centered on IPOs.
- Sector focus is broad, with disclosed portfolio categories including IT/internet, services, bio/healthcare/medical, manufacturing, and non-manufacturing.
- Dedicated funds show sharper themes: life sciences, fintech, growth-stage startups, venture debt, business succession/capital strategy, and sixth-sector agriculture-related businesses.
- The firm’s venture-debt fund supplies capital through bonds with stock acquisition rights, intended for needs such as bridge financing to IPO or funding before the next equity round.
- Current disclosed fund sizes include a ¥15 billion Growth Support No. 5 fund established October 31, 2023; a ¥10 billion Venture Debt fund established August 30, 2023; and a ¥10 billion Business Succession / Capital Strategy fund established January 24, 2025.
Notable Investments
- No public, source-backed portfolio companies or deals attributable specifically to Hideo Gamou were found.
- Mizuho Capital states that it has supported nearly 1,000 investees toward listing since its founding, but the firm pages reviewed did not attribute specific company investments to Hideo Gamou.
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