Koji Sato, Managing Partner at Sapphire Capital Co., Ltd is an active investor based in Tokyo, Tokyo. This profile covers what Koji Sato backs, at which stage, and how founders can reach out in 2026.
Koji Sato is the Managing Partner at Sapphire Capital Co., Ltd, a firm that pioneers growth capital investment in Japan.
Koji Sato invests in SaaS & Enterprise, typically at Early Stage Venture and Late Stage Venture.
- Location
- Tokyo, Tokyo
- Typical check
- $3.8M
What does Koji Sato invest in?
- Investor type
- VC
- Stages
- Early Stage VentureLate Stage Venture
- Invests in
- SaaS & Enterprise
Where is Koji Sato based?
Koji Sato is based in Tokyo, Tokyo.
- Browse more startup investors near Koji Sato:
- Startup investors in TokyoStartup investors in Japan
How to reach Koji Sato
Angels and operators like Koji Sato reply to specific, personalized notes that show real traction, not mass blasts. Build a verified list, write a note that fits their thesis, and track replies, all on Round Funded.
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About this profile
This profile is part of Round Funded, an investor database and outreach platform for founders. It covers 60,000+ active VCs, angels, family offices and accelerators with verified contacts, lets you send pitches from your own Gmail, and includes a free Data Room for your raise. How this data is built.
Cite this page
Round Funded. "Koji Sato." Round Funded investor database, updated September 22, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/koji-sato
Frequently Asked Questions
Who is Koji Sato?
Koji Sato, Managing Partner at Sapphire Capital Co., Ltd is an active investor based in Tokyo, Tokyo. Koji Sato invests in SaaS & Enterprise, typically at Early Stage Venture and Late Stage Venture.
What does Koji Sato invest in?
Koji Sato invests in SaaS & Enterprise, typically at Early Stage Venture and Late Stage Venture. Match your sector and stage, then reach out with a personalized pitch.
What stage does Koji Sato invest at?
Koji Sato typically invests at Early Stage Venture and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Koji Sato's typical check size?
Koji Sato typically writes checks around $3.8M. Use it as a signal for whether your raise fits their stage.
Where is Koji Sato based?
Koji Sato is based in Tokyo, Tokyo.
How do founders reach investors like this?
Round Funded lists active investors with verified, professional contact details for signed-up founders. Filter by sector, stage and location, then send a personalized pitch from your own inbox.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.
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