Mr Marc Fyon > Stibbe > Brussels, Belgium > Lawyer Profile


Work Department

Corporate & Finance.




Marc Fyon specialises in corporate law, corporate finance work, mergers and acquisitions, company restructurings, joint ventures, and public banking law.
Marc has a particular expertise in public tender offers as well as public financial and banking law. He has worked extensively for supervisory authorities and on the organisation and functioning of financial markets, protection of market efficiency and transparency, and the prevention of market abuse. In addition to his transactional and advisory experience, Marc is also highly active in handling litigation for matters in these subject areas.


French, Dutch, English.


  • Member of the Brussels Bar Association and actively involved in its activities
  • Member of the Université catholique de Louvain CRIDES Jean Renauld Center for corporate law (2004–present)
  • Member of the board, deputy treasurer, and subsequently treasurer of the French-Speaking Bar in Brussels (conseil de l’Ordre français des avocats du barreau de Bruxelles) (2016–present)
  • Former member of Presidential Council and the Executive Committee of the International Association of Lawyers (Union Internationale des Avocats)
  • Former President of the Corporate Law Commission of the International Association of Lawyers (until October 2016)
  • Reporter for Belgium within the Corporate Law Commission of the International Association of Lawyers for over 20 years
  • Member of the Disciplinary Board of the Order of the French-speaking and German-speaking Bars of Brussels


  • Graduated maxima cum laude in Law from the Université catholique de Louvain (1987)
  • Graduated cum laude in Economic Science from the Université catholique de Louvain (1988)
  • Master of Laws (LL.M.) from the University of California Los Angeles (UCLA), United States (1989)
  • Admitted to the Brussels Bar in 1989
  • With the Brussels office of Stibbe since 1989 (Partner since 1998)
  • Head of the Corporate & Finance practice group of Stibbe Brussels (2008–2016)
  • Visiting professor and co-lecturer for the Corporate Law and Taxation course (Droit et Fiscalité des groupes de sociétés) at the Faculty of Law of the Université catholique de Louvain (2010–present)
  • Visiting professor and co-lecturer for the Advanced Corporate Law course (droit des sociétés approfondi) at the Louvain School of Management
  • Interim director of the insurance company Integrale appointed by the National Bank of Belgium (2021-present)

Lawyer Rankings

Belgium > Insurance

The far-reaching practice at Stibbe incorporates expertise in insurance litigation and arbitration, employee benefits and corporate and M&A work. Other areas of strength for the unit include advising of the financial regulatory aspects of the insurance sector, tax mandates, and insurance issues arising from major infrastructure projects and public contracts. Oliver Stevens heads up the ‘very knowledgeable’ team; his longstanding experience in the space includes dealing with financial lines insurance, property insurance and litigation concerning the mis-selling of life insurance schemes. Corporate and capital markets expert Jan Peeters frequently advises on transactional work in the sector, and Marc Fyon has amassed considerable experience in corporate finance work. Complementary pensions expert Jan Proesmans and accredited mediator Sophie Bourgois are further recommended.

Belgium > EU regulatory: Financial services

The offering at Stibbe spans core regulatory, compliance, supervision and enforcement issues, with the team also regularly handling regulatory-driven transactions, including fund structuring. Corporate finance experts Jan Peeters and Marc Fyon work alongside banking and finance specialist Pieter Nobels to oversee the work. The group’s client base spans payment service and credit providers, insurance companies and intermediaries, and investment firms.