Hein-Jan ter Meulen

Hein-Jan is a specialist in commercial and corporate law dispute resolution. He began his career as a lawyer in 2012 at a specialised niche firm in Amsterdam. Hein-Jan handles complex contractual disputes and liability issues. These include disputes concerning the formation, interpretation, performance or non-performance, and termination of commercial agreements, directors’ liability, and acquisition disputes (such as warranty breaches and earn-out issues). He also regularly litigates before the Enterprise Chamber in inquiry cases involving breakdowns in the relationships within companies and on behalf of shareholders in exit disputes. Hein-Jan has also litigated and advised on collective actions (mass damage claims).

Hein-Jan has furthermore served as a regular and commercial judge at the District Court of Midden-Nederland and is still active there as a substitute judge. As a judge, he has gained extensive experience in civil procedural law and in the handling and assessment of a wide range of commercial and corporate law disputes, often in line with his experience as a lawyer.

This background allows Hein-Jan to combine a pragmatic approach focused on the interests of his clients with in-depth litigation experience and judicial expertise.

Hein-Jan has been working at Köster since September 2025. In 2012, he started as a lawyer at De Breij Evers Boon and then (from 2018) at Evers Soerjatin. In 2019, Hein-Jan moved to the judiciary, where he worked as a judge until the autumn of 2023. He then returned to the legal profession, first at Evers Soerjatin and then at Köster. In 2018, Hein-Jan completed the Grotius specialisation course in Company and Corporate Law cum laude.

Hein-Jan is a member of the Corporate Litigation Association, the Dutch Association for Procedural Law, and the Association for Mass Damage and Collective Actions. Hein-Jan also regularly publishes on corporate and procedural law topics. An overview of publications can be found below: