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Leyden Labs

Develops nasal spray-based respiratory virus prevention products, with a current focus on addressing influenza protection beyond traditional vaccines.

Deep Tech
Respiratory Biotech
Total Raised
$40M
Last Valuation
$267M
Headquarters
Amsterdam, Netherlands

Overview

Leyden Labs is a biotechnology company developing a nasal spray approach aimed at preventing respiratory infections, with its current public funding narrative centered on influenza. The company is positioned around a non-traditional prophylactic format that could complement or challenge decades of flu vaccine development. Its target market is respiratory disease prevention, including public health use cases where broader or easier-to-administer protection is valuable. Leyden Labs raised €40M in a round backed by the Gates Foundation, highlighting philanthropic interest in alternatives to existing flu-prevention tools.

Funding History

1 round · Jun 2026
$40M
Total Raised
1
Valuation: $267M
Cumulative: $40M

Gates Foundation backs Leyden Labs’ €40M raise: Can a nasal spray do what 80 years of flu vaccines couldn’t

Investors not disclosed
Source

Frequently Asked Questions

How much has Leyden Labs raised in total?
Leyden Labs has raised a total of $40M across 1 funding round.
Who are Leyden Labs's investors?
Leyden Labs's investors include Undisclosed.
What does Leyden Labs do?
Leyden Labs is a biotechnology company developing a nasal spray approach aimed at preventing respiratory infections, with its current public funding narrative centered on influenza. The company is positioned around a non-traditional prophylactic format that could complement or challenge decades of flu vaccine development. Its target market is respiratory disease prevention, including public health use cases where broader or easier-to-administer protection is valuable. Leyden Labs raised €40M in a round backed by the Gates Foundation, highlighting philanthropic interest in alternatives to existing flu-prevention tools.
Where is Leyden Labs headquartered?
Leyden Labs is headquartered in Amsterdam, Netherlands.