Seido Capital
Venture capitalBrussels · Pre-Seed–Late Stage · 3 people tracked
Investment thesis
Seido Capital backs founders in life sciences, biotech, and healthcare-focused deep tech, from pre-seed through Series B (and up to IPO). It focuses on three core sub-sectors: biotech (research, therapeutics, technologies), life sciences (medical devices, diagnostics, digital health tools), and AI for healthcare delivery and research. The firm emphasizes high growth potential, rapid international expansion, and a clear path to mid-term exits. Its process spans project reinforcement (partnering with incubators and universities), rigorous qualification, investment committee review, deal structuring using both dilutive and non-dilutive capital, and long-term post-investment support. It replicates the European Theodorus model in North America.
Source: firm website, verified Aug 7, 2026.
Team · 3 people
from public directories
What they invest in
from 1 of 3 portfolio companiesBiotech ×1Deep Tech ×1
HQs:Belgium×1
Investments · 3 tracked
founders shown can be your intro pathClinical trial data quality/risk-based monitoring company; team led its €6M seed in 2015, later acquired by EQT at a valuation exceeding €500M (Theodorus III).
Advanced cell therapy manufacturing company that grew from an academic project to acquisitions by Orgenesis and later Catalent (Theodorus II & III).
Theodorus is a Belgian seed-stage venture capital firm that invests in and supports researchers and entrepreneurs building science-based companies.
BiotechDeep Tech
Exits · 1
IPOs and acquisitions across the tracked portfolioCluePointsacq. by Eqt
Frequently asked questions
- What stage does Seido Capital invest at?
- Seido Capital invests at the Pre-Seed, Seed, Series A, Series B, Growth, Late Stage stages.
- What is Seido Capital's typical check size?
- Seido Capital typically writes checks of $270K – $2.7M.
- What sectors does Seido Capital focus on?
- Seido Capital focuses on AI & Machine Learning, Biotech, Deep Tech, Digital Health, Healthtech, Longevity, Medical Devices.
- Where is Seido Capital located?
- Seido Capital is headquartered in Brussels, BE.
- Does Seido Capital lead rounds?
- Yes, Seido Capital leads investment rounds.
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