Marnix Somsen specialises in financial markets regulation, with an emphasis on  regulatory and criminal investigations and enforcement. He represents corporations and financial institutions subject to investigation and enforcement proceedings. His experience spans both the US and Europe, with a focus on handling independent internal or regulatory investigations.

He practised law at De Brauw´s New York office for three years, and currently heads our Corporate Criminal Defence, Compliance & Investigations Practice in Amsterdam. Marnix and his team typically run cross-border internal or regulatory investigations, often with a US, UK or EU angle, drawing upon the resources of our international network of law firms. Over the past few years, investigations have involved topics as:

• insider trading
• market manipulationtipping
• churning
• market timing
• bank, securities and real estate fraud
• money laundering
• regulatory compliance failures
• FCPA violations
• UN, US and EU sanction programs.

Recent work also includes representing several listed corporates and financials in enforcement action brought by the SEC, the FED, OFAC, the DoJ, the FSA, DNB and the AFM on a variety of regulatory and criminal charges.

He is editor of the Journal for Financial Law (Tijdschrift voor Financieel Recht) and teaches Supervision & Enforcement at Grotius.