Herman Prakke

Managing Partner

Herman Prakke is a highly-experienced adviser to, coach and supervisor of, processes of change. His experience includes many years of executive-level responsibility as international manager and coaching and consultancy work on the executive level in multiple countries.

Herman studied Business Administration at the University of Amsterdam, which he completed with honours in 1987. After his studies, he worked at DSM for over 20 years, where he established and expanded businesses in Europe, China, India and Brazil. In his final years with DSM, he held a position as business director for DSM White Biotechnology, where was responsible for the worldwide development of the senior management positions in this organization.

The experience of many years of management and entrepreneurship made clear to him that the real factor for success is ‘the human side of enterprise’. He took the decision to make a radical career change to focus on coaching and teambuilding. He became senior program director at De Baak and established himself as independent consultant and coach a year later.

During his years as consultant, he worked with the senior management of multiple Fortune 500 companies and successfully supported many radical processes of change. Herman is associated with Ashridge Hult Executive Education and Mannaz in the United Kingdom. In December 2016, he joined Jonathan Warner.


Our Team

Jonathan Warner has a team of 14 consultants. The qualifications of our team spread across the entire spectrum of our services. In addition, we maintain an extensive network of consultants whom we employ when the size or specificity of an assignment is beyond the capacity of the team presented below.

Arjan Eleveld
Arjan Eleveld
Founding Partner
Herman Prakke
Herman Prakke
Managing Partner
Reinout van Kalleveen
Reinout van Kalleveen
Partner and executive coach
Amber van den Hout
Amber van den Hout
Partner and assessment adviser
Dorien Gruppelaar
Dorien Gruppelaar
Assessment adviser and personal coach
Frank van Luijk
Frank van Luijk
Executive assessment adviser and leadership expert
Pernille La Lau

Presentation coach
Hans Roos
Hans Roos
Management consultant and personal coach
Rene Bastiaansen
Rene Bastiaansen
Specialist in leadership programmes
Jolanda Vollebregt
Jolanda Vollebregt

Office manager
Frans Gosses
Frans Gosses
Executive coach and management consultant