Marry de Gaay Fortman

Advocaat | Partner

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Marry is a lawyer corporate and public governance and an expert in the field of governance and regulation. She is involved in research and regulatory matters and specialises in public economic law and corporate governance for large companies and public and semi-public institutions. She is also considered a trusted boardroom advisor, focusing on the governance dynamics between executive boards and supervisory boards, shareholders, and other stakeholders.

Marry is a member of a multidisciplinary team that works at the intersection of corporate governance, regulatory and corporate litigation and that carries out governance stress tests that lead to recommendations for the improvement and strengthening of the governance within companies. Read more about the governance stress test.

Marry combines her legal work with non-executive director roles, including as a supervisory director for De Nederlandsche Bank and Conclusion Group. Marry is also chair of International Documentary Film Festival Amsterdam and board member of the Dutch Lawyer’s Association and has previously served as a member of the supervisory board director for KLM, Royal HaskoningDHV, GVB Amsterdam and the health insurer VGZ. She was chair of the theatre production company Internationaal Theater Amsterdam.

Marry also lectures on boardroom dynamics at the Governance University and the Erasmus Governance Institute, is co-author of a chapter on the Dutch manual Handboek Corporate Governance. She also organises round table meetings for supervisory directors. Marry is a member of Houthoff’s Diversity & Inclusion Committee.

  • “One client stated that 'Marry de Gaay Fortman is a fantastic partner who understands the way the government works and is able to provide good strategic insight'.”
    Chambers Europe, Public Law (2024 Edition)
  • Recommended
    Legal 500, Environment & Planning (2024 Edition)
  • Recommended
    Chambers Europe, Public Law (2023 Edition)
  • “She is well aware of the requirements of her clients and is an excellent lawyer on strategic issues.”
    Chambers Europe, Public Law (2022 Edition)
  • “She makes clear what is always important to keep in mind strategically.”
    Chambers Europe, Public Law (2021 Edition)
  • Recommended
    Chambers Europe, Public Law (2020 Edition)


Marry is 'IMI Certified Mediator' (International Mediation Institute). With her confirmed expertise and experience, she can offer clients an ever broader range of dispute resolution options. Business mediation is often a cheaper and faster way for parties to resolve their disputes.


  • LL.M. Law (Vrije Universiteit Amsterdam)
  • Business mediator (International Mediation Institute)
  • Specialist course on tenancy law
  • Advising university medical centres in public tender procedures for IT and electronic medical files.
  • Representing the Italian (veterinary) pharmaceutical company Innovet (part of Epitech Group) in patent litigation proceedings, relating to both validity and infringement of its patent relating to pharmaceutical compositions containing micronized compounds.
  • Advising and representing Tata Steel, one of Europe's largest steel plants, on their most important environmental permits and enforcement procedures.
  • Advising Vestia, a Dutch housing corporation, on various complex regulatory aspects relating to the unwinding of its EUR 20 billion derivative portfolio.


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