Who we are

Erik van de Loo

Erik is specialised in fundamental change processes in organisations, culture and leadership. He advises national and multinational organisations on the interrelated change processes on individual, team and organisational level and is professor at different international institutions.

Email: erik.vandeloo@phyleon.com

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Academic career:

  • Professor of Organizational Behaviour at INSEAD and Co-Founder and Co-Director of the post-graduate programme “The Executive Master in Change. Transforming self and organisations”
  • Professor of Leadership and Behaviour at TIAS School for Business and Society at Tilburg University
  • Former Professor at UniRazak University in Kuala Lumpur and the Vrije Universiteit Amsterdam

Erik studied Clinical Psychology at the Radboud University Nijmegen and received his PhD at the Leiden University. He is a psychoanalyst with a Masters’ degree in Work & Organisation in Occupational Health (SIOO). Erik published several articles on topics such as clinical approach to coaching and consultation, organizational change and leadership, corporate governance and boards. His current research focuses on Board Leadership and Board Dynamics, exploring the interaction between Boards of Executives and Non-Executives in their roles at the top of the organisation.

Monitoring Committee Accountancy (since 2015), overlooking changes and transformations in the accountancy practice in the Netherlands
International Society for Psychoanalytic Study of Organisations

Erik van de Loo publishes regularly. A list of his most recent publications is here

Jaap Winter

Jaap conducts board reviews, advises boards and leaders on governance matters and board dynamics. Jaap is one of Europe’s leading corporate governance experts. He was member of the Tabaksblat Committee that drafted the first Dutch Corporate Governance Code in 2003. He chaired the High Level Group of Company Law Experts that advised the EU Commission on Corporate Law and Corporate Governance in the EU in 2001-2002. He has advised boards and executive and non-executive directors extensively on corporate law, corporate governance and M&A.

Email: jaap.winter@phyleon.com

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Jaap was President of the Executive Board of the Vrije Universiteit Amsterdam from December 2013 until December 2017. Before that, he was partner of the Amsterdam based law firm De Brauw Blackstone Westbroek.

Academic career:

  • Professor of International Company Law at the University of Amsterdam
  • Professor of Corporate Law, Governance and Behaviour at the Vrije Universiteit Amsterdam
  • Distinguished Visiting Professor of Corporate Governance at INSEAD

Jaap is chairman of the Supervisory Board of Royal Schiphol Group, chairman of the Supervisory Board of Erasmus University and Board member of ASR Nederland Continuity Foundation.


  • ICGN Award for exceptional achievement in the field of corporate governance in 2004
  • The Gouden Zandloper Life Time Achievement Award in 2019 for his work as a lawyer

Jaap Winter publishes regularly. Click here for the list of his most recent publications

Thyra de Graaff

Thyra conducts board reviews. She advises leaders on governance matters and board dynamics. She provides coaching and role consultation to (non)-executives directors and leaders who want to reflect on their performance.

Email: thyra.degraaff@phyleon.com

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As a consultant, she has 30 years of experience working on organisational change and transition, executive coaching, board development, role consultation and team development. She inspires leaders to reflect on their responsibilities, their roles and their interactions with individual employees, teams and organisations. As an executive coach (individual and teamlevel) for Insead Global Leadership Centre (IGLC), her practice also includes coaching supervisory board members in the Inboard Leadership Program for Insead alumni and coaching, supervising in Insead’s international postgraduate Executive Master in Change Program.

Thyra has a Master’s degree in Work and Organisational Psychology at Leiden University and has a Master’s degree in Business Administration at Rotterdam School of Management, Erasmus Universiteit. Thyra is a licensed psychotherapist.


International Society for Psychoanalytic Study of Organisations (ISPSO)
Dutch Institute of Psychologists

Saskia de Maat

Saskia is fellow at Phyleon where she works as an executive coach and consultant with both individual executives, non-executives and professional leaders as well as with boards and teams. Integrating her corporate work experience and extensive clinical experience as a trained psychotherapist and psychoanalyst, her work with leaders purposes deep insight in conscious and unconscious personal, team and organisational dynamics, enabling leaders to really increase their impact and effectiveness. She co-conducts the Phyleon programme Boardwerk is Mensenwerk, helping non-executives develop their leadership in context. She gives role consultations and consults on change, leadership and personal development.

Saskia is a coach, supervisor and lecturer at the INSEAD Executive Master for Change and coaches for the INSEAD InBoard (non-executives) programme.

She has worked with clients stemming from a broad range of sectors including the financial sector, law firms, health care, construction companies, consultancy, universities, higher education institutes, IT, large corporates, packaging industry, and public and not for profit organisations.

Email: saskia.demaat@phyleon.com


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Saskia holds a Master in Communications (University of Utrecht), a graduate diploma in Marketing (Chartered Institute of Marketing London) and a Master and a PhD in Clinical Psychology (VU University of Amsterdam). She worked for more than twelve years with chemical company Akzo Nobel, before changing professions and becoming a licensed psychotherapist and psychoanalyst. She joined the Dutch Psychoanalytic Institute (Amsterdam) as a clinical professional for many years, next to building her coaching practice. Saskia has a broad experience in supervision and teaching (VU University of Amsterdam, post graduate clinical training programmes and leadership programmes). For several years she was a lecturer at the Centre for Executive Coaching of the VU University of Amsterdam.

Saskia is member of the Dutch Psychoanalytic Association (NPaV), the International Psychoanalytic Association (IPA), the International Society for Psychoanalytic Studies of Organisations (ISPSO) and of the European Group of Organisational Studies (EGOS). Recent research interests include the question of the impact of unconscious phantasy structures on leadership behaviour.

Pelle Engel

Pelle performs board reviews and advises boards of executive and non-executive directors on governance and board leadership. The common thread in his work has always been his curiosity about people. Why do people do what they do, and how does that impact organisations, teams and the individual.

He has gained profound experience in advising and supporting directors in both the Executive Board and the Supervisory Board of ABN AMRO Bank. In addition, he has many years of professional experience in advising companies on financial and strategic issues and in leading teams in different and rapidly changing environments. With responsible roles in Sales, Risk Management, Strategy and Corporate Governance, Pelle has built up a wide range of expertise and skills that strengthen his natural role as a trusted advisor and executive coach.

Email: pelle.engel@phyleon.com

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Pelle has a Masters’ degree in Economics at the University of Amsterdam (UvA), is a post academic trained business mediator at the Amsterdam Appropriate Dispute Resolution Institute (ADR) and completed the Executive Master in Change (EMC) at INSEAD in Fontainebleau.

Ineke Verdonkschot

Ineke is fellow at Phyleon, conducts board reviews, consults (non) executive directors on governance & leadership and works as an executive coach for individuals and teams.

She brings relevant experience in the field of personal development and interpersonal cooperation. For two decades she has worked in leadership positions in the international Retail environment of Ahold Delhaize within disciplines such as e-Commerce, Marketing, Strategy and HR, leading a variety of complex change and transformation projects, with systemic and human issues in the area of the Future of Work.

Curious by nature, with a keen eye on a sound emotion & ratio balance and working from the triad organization – role – person,  she explores and helps to find ways for leaders and organizations to change for the better.

Email: ineke.verdonkschot@phyleon.com


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Ineke holds a Master in Business Economics at the Vrije Universiteit of Amsterdam (VU), is certified in Systemic Coaching (Phoenix Institute in Utrecht) and has completed the Executive Master in Change (EMC) at INSEAD in Fontainebleau.


Maarten Hage

With his experience in the field of compliance, supervision and behavior gained at PwC, ABN AMRO and DNB, Maarten brings a view on compliance that fits seamlessly with Phyleon’s way of working. This way of working is characterized by connecting the visible rules, processes and procedures and the invisible, unconscious and sometimes even irrational in organizations and people’s behavior.

Email: maarten.hage@phyleon.com


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Marjorie van de Wolfshaar

Marjorie is a professional in the field of Personal Assistance and Executive Support, with more than 20 years of experience working at Supervisory and Executive Board level. She enables the day-to-day management routines that enhance the effectiveness of both Erik van de Loo and Jaap Winter in particular and the organization as a whole.

Email: marjorie.vandewolfshaar@phyleon.com

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Maureen Kroese

Maureen has many years of experience in various supporting roles. From department secretary to Personal Assistant. At the office she takes care of the day-to-day business and is the point of contact for our relations as well as support for the fellows.

Email: maureen.kroese@phyleon.com

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  • IMA International Management Assistants