About us
Leyden Labs is a clinical-stage biotechnology company that is fundamentally changing how we protect people from airborne viruses. The goal is to provide unprecedented protection, right in the palm of the hand, for those who need it most. Our nasal sprays are built on decades of combined knowledge of mucosal biology and drug delivery innovation.
Our story
Dutch biotechnology company Leyden Labs was founded by the team that built Crucell into a global vaccine pioneer. Following Crucell's acquisition by Johnson & Johnson in 2011, its technology and expertise became a cornerstone of Janssen Vaccines. Following on that experience, Leyden Labs was established by renowned biotech leaders Dinko Valerio, Jaap Goudsmit, Ronald Brus, and Koenraad Wiedhaup.
Born out of the pandemic of 2020, Leyden Labs was founded on the belief that people deserved more adaptive, effective solutions than vaccines and social distancing. While the world raced to develop vaccines and antivirals against a novel virus, our founders reflected on a clear paradox: if airborne respiratory viruses enter through the nose, why are we protecting through the blood? There is an obvious mismatch between standard approaches to fighting respiratory viruses by delivering drugs systemically and what is known about transmission of airborne respiratory viruses. Our founders endeavored to establish the company around a completely different approach: administer broadly protective medicines directly to the respiratory mucosa where viruses invade.
Since 2020, the company has continued to grow, be inspired, and be joined by the expertise and insights of leaders and founders with shared goals: Linfa Wang, Anna Marie Pyle, Akiko Iwasaki, Kazuhiro Ito, Garth Rapeport, and Jag Shur.
Our team
We are bringing this vision to life through the collective strength of an experienced team with the expertise and determination to deliver lasting results.

Koenraad Wiedhaup
Founder and Chief Executive Officer
Jintanat Ananworanich
Chief Medical Officer

Clarissa Koch
Chief Scientific Officer

Susan Sobolov
Chief Technology Officer

Marieke van der Lans
Chief Financial Officer

Ronald Brus
Founder and Chief Growth Officer

Jaap Goudsmit
Founding Scientist and Senior Advisor

Rosemary Tan
CEO, Asia

Xavier Maes
General Counsel

Sagrario Arias Rivas
Research Partnerships

Victor Beslier
Intellectual Property

Anna Beukenhorst
Scientific Data

Kristian Bolk
People

Lizbeth Carmona
Clinical Development

Justin Crawford
Research

Chris Dachwitz
IT

Ilse Haisma
R&D Operations

Ya Luan Hsiao
Medical

Ted Kwaks
Early Research

Stephen Mc Nally
Quality

Joana Meireles
Regulatory

Dennis Mollema
Corporate Development

Amanda Motto
Finance & Control

Mabel Ng
Operations, Asia

David Phang
Business Development, Asia

Kerri Pierz
Market Development

Robin Rogiers
Medical

Thomas Thunnissen
Procurement & Partnerships

Dennis de Vlaam
Business Development
Our Supervisory Board
Dinko Valerio
Founder and Chair of the Supervisory Board
Crucell, former CEO
Onno van de Stolpe
Galapagos, former CEO
James Shannon
GSK, former CMO
Novartis, former Global Head of Development
Richard Whitley
University of Alabama
Professor in Pediatrics and Microbiology, Medicine and Neurosurgery
René Russo
Xilio Therapeutics, CEO
Ben Verwaayen
Alcatel-Lucent, former CEO
David Schenkein
GV, General Partner
Stephen Knight
F-Prime Capital, President and Managing Partner
Eli Casdin
Casdin Capital, Chief Investment Officer and Founder
Khoo Shih
ClavystBio, CEO
We are grateful to the contributions John Martin, the esteemed former CEO of Gilead Sciences, made to Leyden Labs before his passing in 2021.
OUR APPROACH | OUR PUBLICATIONS | ABOUT US | NEWS | CAREERS
Contact
Media inquiries
Stay updated
Leyden Laboratories B.V.
Leiden Laboratory
Emmy Noetherweg 2
2333 BK Leiden
The Netherlands
Leyden Labs Asia Pte. Ltd.
79 Science Park Drive
#04-05, Cintech IV
Singapore 118264
© Leyden Labs, 2026 | Privacy Statement | Design by Ape to Zebra
