Our Team

Management Team

CEO – Gerben Zondag, Ph.D.

Over 20 years’ experience in biotech companies on scientific and business development level. Strong managerial skills and scientific background in molecular biology.

CSO – Jeroen van Bergen, Ph.D.

Cum laude Ph.D. in tumour immunology, EMBO & VENI fellow, 25 years’ experience in immunology with over 50 publications.

CBO – Roger Legtenberg, Ph.D.

Over 20 years’ experience in biotech & clinical CRO companies on management and business development level. M&A experience with scientific background in physiology.

CFO Rene de Keijzer, R.A 

Registered accountant, founding partner of de Keijzer Nipius & Co accountancy and tax advisors, now part of Crowe Global.


Prof. Ferry Ossendorp 

Synthetic Vaccine Biology and head of the Tumor Immunology group, Leiden University Medical Center.

Prof. John Haanen 

Translational Immunotherapy of Cancer and head of Medical Oncology, Netherlands Cancer Institute.