Stuurgroep Inkoop Grote Bedrijven, Steering Committee Procurement of Large Companies is a network of CPOs and procurement decision makers of large Dutch companies and organisations. SIGB represents a procurement spend of  > € 200 billion covering most almost all industries and services. 

The goals of SIGB are to:

  • offer a network “at par” for procurement decision makers in the Netherlands
  • share the latest insights and trends in the field of procurement and supply management
  • actively contribute to the professionalisation of procurement and supply management
  • be a platform for the continuous dialogue between science, professionals/practitioners

Membership is on invitation only and limited to a maximum of 25.

SIGB meets quarterly. Biannually SIGB organises the renowned Erenstein conference.


  Jeroen Wegkamp Jeroen Wegkamp (CPO NS), chair (

  Hans Weusthof Hans Weusthof, secretary (