Data by Four: Permanently Closed for Business

Thank you for your interest in Data by Four, a former flexible, no-nonsense Dutch CRO. We are permanently closed for business. Please see the list below of our people and their (previous) roles.

Thank you again,

• Jochem Verstappen. Data Scientist, co-founder, co-owner, director.
  LinkedIn: https://www.linkedin.com/in/jochemverstappen/
• Just van Es. Biostatistician, director, co-founder, co-owner.
  LinkedIn: https://www.linkedin.com/in/justvanes/
• Rosalie de Weerd. Office manager.

Former info: Data by Four B.V. (2021-2025)
KvK Registration: 83521003 | info@databyfour.com