On June 13, 2023 co-founder and honorary chair of the Willem Kolff Foundation, John Jacobze (b. July 9, 1934), passed away.  We remember him with gratitude and respect. 

Board of the Willem Kolff Foundation as of july 1, 2023: 

  • Derk J. Meulman, M.D., chairman, IJsselmuiden, the Netherlands
  • Piet Dijkstra, Treasurer, Kampen, the Netherlands
  • Jannie Smit, Secretariat, Kampen, the Netherlands
  • Prof. Ruud A. Bank, Ph.D., UMCG, Groningen, the Netherlands
  • S. Watse Kolff, M.A., Vught, the Netherlands
  • Fred P.M. van der Kraaij, Ph.D., Kampen, the Netherlands
  • Joop J.G. Offerman, M.D., Ph.D., Zwolle, the Netherlands 
  • Fokko P. Wieringa, Ph.D., Principal Scientist at IMEC Eindhoven, the Netherlands

Articles of Association WKF

(founded in Kampen, May 9, 2003)
Download Articles of Association

WKF remuneration policy: see Articles of Association


The Willem Kolff Foundation has ANBI status. This means that tax-free donations can be made to the WKF, because it has been designated by the tax authorities as an Algemeen Nut Beogende Instelling (ANBI). The ANBI status is valid for an indefinite period of time.

Download decision (in Dutch). More information here (in Dutch) or upon request (please send a mail to: