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Saisei Ventures

Venture Capital

Life science VC firm building next-generation biotech companies by bridging Japanese research with Western operating models in cell, gene, and regenerative medicine.

Cambridge, United States · 1+ investments · 1 portfolio companies

Seed
Early Stage
Biotech
Digital Health
Headquarters
Cambridge, United States
Founded
2020
Website
saiseiventures.com
Portfolio Company
1
Total Investment
1
Last Investment
Jan 2025
Geographic Focus
Global, Japan, United States

Investment Thesis

Invest in early-stage biotech from demonstrated POC to early clinical stage, leveraging Japan's academic ecosystem and global networks to build pharma-attractive companies in cell, gene, and regenerative medicine.

Saisei Ventures is a Venture Capital firm based in Cambridge, United States. It has made 1 investment, including Optieum Biotechnologies. Focus areas include Biotech and Digital Health.

Portfolio1

Co-investors5

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5 co-investors across 5 shared portfolio companies — who they back alongside, and how often they lead.

Venture Capital ×4 · Corporate VC ×1 · 2 shared rounds

Investment History

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