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Leyden Labs competitors & alternatives
The 12 closest competitors and alternatives to Leyden Labs among biotechnology companies — ranked by similarity to what Leyden Labs actually does, not by market-cap band.
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About Leyden Labs
Leyden Labs develops intranasal antibody-based nasal sprays designed to prevent respiratory virus infections directly at the nasal mucosa. The company's products aim to provide broad, self-administrable protection against various strains of viruses like influenza and COVID-19 to combat both current and future pandemic threats.
Leyden Labs at a glance
Leyden Labs is a biotechnology company headquartered in Netherlands. Its most recent funding round raised $44M in June 2026. Xcout tracks 18 named people at Leyden Labs, including Rosemary Tan (Chief Executive Officer).
Leyden Labs leadership
- Rosemary TanChief Executive Officer
- Marieke van der LansChief Financial Officer
- Clarissa KochChief Research Officer
- Jintanat AnanworanichChief Medical Officer
- Xavier MaesGeneral Counsel
- Koenraad Wiedhaupfounder and CEO
12 more named people on record for Leyden Labs, with roles, board committees and tenure — see the full roster →
Leyden Labs funding rounds
Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| — | $44M | 4 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Recent Leyden Labs news
Top 12 Leyden Labs competitors
Ranked by semantic similarity — how close each company is to Leyden Labs by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Biotech
Polyrizon Ltd. is an Israeli biotechnology firm specializing in the creation of medical device hydrogels, delivered as nasal sprays. These innovative sprays are designed to form a protective barrier within the nasal cavity, preventing viruses and allergens from attaching to the nasal epithelial tissue. Its current development pipeline features several targeted solutions, including PL-14, formulated to block nasal allergies; PL-15, aimed at combating COVID-19; and PL-16, for influenza prevention. Established in 2005, the company operates from its headquarters in Ra'anana, Israel.
Similar biotechnology company
EnGen Bio, LLC is a biotechnology company developing therapies and vaccines designed to provide lifetime immunity against Type A influenza in both humans and animals. The company targets a novel epitope on the flu virus's M1 matrix protein to elicit broadly neutralizing antibody responses. It serves the human healthcare, veterinary, and pharmaceutical sectors.
Similar biotechnology company
Calder Biosciences Inc. is a nano-scale molecular engineering company founded in 2018 that develops next-generation conformationally-stabilized universal influenza vaccines and other biologics.
Similar biotechnology company
Memo Therapeutics AG (MTx) is a late-stage biotech company focused on developing best-in-class therapeutic antibodies. The company aims to transform the lives of patients with viral infections and has shown encouraging Phase II data.
Similar biotechnology company
Xanadu Bio, Inc. is a biotechnology company that develops next-generation polymer nanoparticle delivery platforms for mRNA and other nucleic acid-based therapies. Utilizing its proprietary poly(amine-co-ester) (PACE) polymer technology, the company creates tunable, organ-specific treatments for oncology and immunology, as well as intranasal vaccines for viral respiratory pathogens.
Similar biotechnology company
BlueWillow Biologics, Inc. is a privately held clinical-stage biopharmaceutical company located in Ann Arbor, Michigan. The company specializes in the development of proprietary intranasal vaccines and immune-modulating technologies.
Similar biotechnology company
Lassen Therapeutics is a biotechnology research company based in San Diego, California, focused on developing novel, best-in-class biotherapeutics to treat patients with serious diseases.
Similar biotechnology company
Axitan Holdings is a biotechnology company that develops novel endolysin-based products to target and neutralize pathogenic bacteria for the animal protein and food safety industries. Its technology provides antibiotic-free solutions to help reduce antimicrobial resistance and address key productivity issues in poultry and livestock production.
Biotech
Infinimmune is an Alameda, California-based biotechnology company founded in 2022 that develops human-derived antibody medicines and holds a massive database of paired heavy and light sequences.
Similar biotechnology company
Bioneedle Drug Delivery B.V., headquartered at the Leiden Bio Science Park in the Netherlands, was formed in 2004 to develop an innovative vaccination and drug delivery technology.
Similar biotechnology company
Plantibodies is a biotechnology company headquartered in Paris, France, specializing in the development of plant-based oral immunotherapies. Designed to act locally in the body, the company's biological innovations aim to revolutionize biologics and healthcare. Plantibodies has raised funding from leading business angel networks to support its early-stage research.
Similar biotechnology company
Creyon Bio is a biotechnology organization that engineers RNA-based and oligonucleotide medicines designed to enable tissue-specific delivery with improved safety and efficacy.
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