Leyden Labs
Protecting Now From What Comes Next
Leiden, Netherlands · Founded 2021 · $320.0M raised
- Headquarters
- Leiden
- Employees
- 11–50
- Founded
- 2021
- Business Model
- B2B
- Website
- leydenlabs.com
- Total Funding
- $320.0M
- Last Round
- $40.0M Venture RoundJun 2026
- Rounds
- 7
About
Leyden Labs is a clinical-stage biotechnology company developing nasal sprays containing broadly-neutralizing antibodies that target respiratory viruses in the nasal mucosa. Their lead program PanFlu targets influenza A and B strains with a universal mechanism designed to protect against existing and future viral variants. Founded in 2020 and based in Leiden, Netherlands.
Summary
Leyden Labs is a Biotech company based in Leiden, Netherlands, founded in 2021. It has raised $320.0M in total across 7 rounds, most recently a $40.0M Venture Round round in Jun 2026. Investors include GV, Casdin Capital and European Innovation Council Fund.
Tech & App Stack
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Funding History
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Jun 2026
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Series A through Venture Round — per-round amounts, valuations, and who invested in each round.
Investors
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