Who founded Leyden Labs?

Leyden Labs was founded by Koenraad Wiedhaup, Ronald Brus, Jaap Goudsmit, Dinko Valerio in 2020.

Who are Leyden Labs's investors?

Leyden Labs's investors include ClavystBio, F-Prime Capital, GV (Google Ventures), Bluebird Ventures, Byers Capital, Casdin Capital, European Innovation Council Fund, European Investment Bank and 6 more.

Where is Leyden Labs headquartered?

Leyden Labs is headquartered in Leiden, NL.

Leyden Labs

Leiden, NL · Founded 2020 · 80 employees on LinkedIn · 15 known investors

Find your way into Leyden Labs

Paths you didn't know you had: your email and LinkedIn already hold routes to the Leyden Labs team. We find them for you
2nd- and 3rd-degree connections: the friend-of-a-friend routes that take hours to manually find through your inbox or LinkedIn
Answers now, not in days: momentum is everything in a raise. Skip asking around whether someone knows someone

Days of research, done the moment you sign in, with every route ranked by how warm it is.

Leyden Labs develops nasal sprays containing antibodies that target respiratory viruses such as influenza and COVID at the nasal mucosa to prevent initial infection and transmission. The company works on broadly protective antiviral products aimed at addressing endemic and pandemic respiratory threats.

Biotech Deep Tech Healthtech

Founders & leadership

Leyden Labs was founded in 2020 by Koenraad Wiedhaup, Ronald Brus, Jaap Goudsmit, and Dinko Valerio.

Koenraad Wiedhaup Founder & Chief Executive OfficerKoenraad Wiedhaup is founder and CEO of Leyden Labs, which develops antibody-based nasal sprays targeting respiratory viruses. He previously worked as a partner at McKinsey & Company advising life sciences companies, and began his career at a biotech firm in the San Francisco Bay Area; he holds degrees in life sciences and biotechnology from the Universities of Leiden and Delft.

Ronald Brus Founder & Chief Growth OfficerPhysician and entrepreneur who founded myTomorrows and co-founded Leyden Labs and Eyro.ai; previously held leadership roles including CEO and COO at Crucell and served on the Executive Committee of Galapagos; earned an MD from the University of Groningen.

Jaap GoudsmitFounding Scientist and Senior Advisor

Dinko Valerio Founder and Chair of the Supervisory BoardDinko Valerio is founder and chair of Leyden Labs, which develops nasal sprays containing antibodies to prevent respiratory viral infection. He previously founded and served as CEO of Crucell, a vaccine-focused biotechnology company, and co-founded Galapagos Genomics and the venture capital firm Aescap Venture; he earned a Ph.D. with honors from the University of Leiden and held a professorship in gene therapy there.

Jintanat Ananworanich Chief Medical OfficerJintanat Ananworanich is a pediatrician and clinical immunologist with expertise in infectious diseases and vaccine clinical research. He serves as Chief Medical Officer of Leyden Labs, which develops nasal spray antibodies to prevent respiratory viral infections.

Clarissa KochChief Scientific Officer

Marieke van der LansChief Financial Officer

Xavier MaesGeneral Counsel

Rosemary TanChief Executive Officer, Leyden Labs Asia

Investors · 15

ClavystBio✓ confirmed by Leyden LabsSingapore

How we know: the company's own site · pulse2.com · Not right? Tell us

F-Prime Capital✓ confirmed by Leyden LabsCambridge · $3M – $10M

How we know: F-Prime Capital's portfolio page · the company's own site · a partner's Signal profile · Not right? Tell us

GV (Google Ventures)✓ confirmed by Leyden LabsMountain View · $250K – $50M

How we know: GV (Google Ventures)'s portfolio page · the company's own site · open dataset · 5k.vc investor directory · Not right? Tell us

Bluebird Ventures✓ confirmed by Leyden LabsPalo Alto

How we know: the company's own site · a partner's Signal profile · Not right? Tell us

Byers Capital✓ confirmed by Leyden Labs

How we know: the company's own site · Not right? Tell us

Casdin Capital✓ confirmed by Leyden LabsNew York

How we know: the company's own site · a partner's Signal profile · Not right? Tell us

European Innovation Council Fund✓ confirmed by Leyden Labs

How we know: the company's own site · pulse2.com · Not right? Tell us

European Investment Bank✓ confirmed by Leyden LabsLuxembourg

How we know: the company's own site · Not right? Tell us

Invest-NL✓ confirmed by Leyden LabsAmsterdam

How we know: the company's own site · pulse2.com · Not right? Tell us

Invus✓ confirmed by Leyden LabsNew York

How we know: the company's own site · Not right? Tell us

Polaris Partners✓ confirmed by Leyden LabsBoston · $500K – $5M

How we know: the company's own site · Not right? Tell us

Qiming Venture Partners✓ confirmed by Leyden LabsBeijing

How we know: the company's own site · Not right? Tell us

Connecticut Innovationslisted by Connecticut InnovationsNew Haven · $500K – $2M

How we know: Connecticut Innovations's portfolio page · Not right? Tell us

Amadeus Capital PartnersreportedLondon · $50K – $12.7M

How we know: a partner's Signal profile · Not right? Tell us

Also in the syndicate · 1

Gates Foundation

Founder mafia

2 people who came through Leyden Labs went on to found or lead other companies.

Sjoerd NikkelenAdvisor FundraisingFounded Mophones Ronald BrusFounder & Chief Growth OfficerFounded Mytomorrows

Related companies · 5

Linden LabLinden Lab operates Second Life, a virtual world where users can create, socialize, and conduct economic activity, and Tilia, a licensed money services business that facilitates virtual economy transactions.

Denali TherapeuticsDenali Therapeutics develops therapeutics for neurodegenerative diseases. The company focuses on discovering and developing novel drug candidates targeting specific neurological conditions.

GreentownlabsGreentown Labs is a climatetech startup incubator that supports and houses early-stage entrepreneurs, connecting them with corporate partners, investors, and community resources to develop and commercialize energy and climate technologies. It operates locations in Boston and Houston in the United States.

GetlabsGetlabs provides at-home lab sample collection, sending phlebotomists to patients to draw blood and collect samples for lab tests ordered by their providers. Lab results are shared directly with the patient and the ordering provider, with support for connecting results to the Apple Health app.

Enliven TherapeuticsEnliven Therapeutics is a clinical-stage biopharmaceutical company that discovers and develops small molecule therapeutics using a precision medicine approach, with a focus on oncology and hematology. Its discovery work combines clinically validated biological targets with differentiated chemistry to develop drugs for unmet medical needs.

Companies working in the same space as Leyden Labs.

In the news

Leyden Labs secures €40 million to develop intranasal protection against influenza and coronaviruses | EU-Startupseu-startups.com · Jun 2026

Gates Foundation backs Leyden Labs' €40M raise: Can a nasal spray do what 80 years of flu vaccines couldn't — TFNtechfundingnews.com · Jun 2026

Frequently asked questions

What does Leyden Labs do?: Leyden Labs develops nasal sprays containing antibodies that target respiratory viruses such as influenza and COVID at the nasal mucosa to prevent initial infection and transmission. The company works on broadly protective antiviral products aimed at addressing endemic and pandemic respiratory threats.
Who founded Leyden Labs?: Leyden Labs was founded by Koenraad Wiedhaup, Ronald Brus, Jaap Goudsmit, Dinko Valerio in 2020.
Who are Leyden Labs's investors?: Leyden Labs's investors include ClavystBio, F-Prime Capital, GV (Google Ventures), Bluebird Ventures, Byers Capital, Casdin Capital, European Innovation Council Fund, European Investment Bank and 6 more.
Where is Leyden Labs headquartered?: Leyden Labs is headquartered in Leiden, NL.