Practice & Precision
Some matters arrive with clear precedent and established procedure. Many do not. Our services cover the full lifecycle of enforcement, from the first sign of regulatory scrutiny through to expert testimony before a court or arbitral panel, and the work in between that shapes how a matter is framed before it is ever formally heard.
Financial Regulatory
Regulatory enforcement & strategy
When financial supervisors or a public prosecutor opens an inquiry, the response defines the outcome. We advise on enforcement strategy, assess exposure, and where needed, conduct or validate internal investigations before or alongside formal proceedings.
Compliance & preventive advisory
Disclosure obligations, AML frameworks, market abuse compliance, pre-transaction advice, board-level counsel, and in-house training for lawyers, compliance officers, and board members. The most valuable work is often the work that prevents a crisis.
Dispute Resolution
Complex disputes
Complex disputes in the financial markets rarely turn on law alone. Shareholder claims, securities litigation, accounting fraud allegations, and benchmark disputes require both legal precision and economic understanding. We act as counsel, lead investigations, and appear as expert witness.
Expert opinions & witness services
Expert reports and testimony for courts, regulators, and arbitration panels across jurisdictions. Our opinions withstand cross-examination because they are built on both legal rigour and economic analysis.
White Collar Crime
Criminal & administrative defence
Market manipulation, insider trading, fraud, corruption, money laundering. We bring arguments built on a combination of legal analysis and economic data. Criminal cases dropped, administrative matters won, civil disputes settled: the record reflects what this approach produces.
Emerging technology & financial crime
Matthijs has a specific expertise in emerging technology and enforcement. Crypto crime, online fraud, abuse of artificial intelligence, cross-border digital asset matters. The instruments are new. The principles of crime and market integrity are not.
Track Record
Financial Regulatory
Advising listed companies on disclosure obligations
Counselled boards on market abuse matters
Advising on regulatory aspects of public bids and share buybacks
Senior expert on EU-wide review for the European Commission
Advising fintechs on licence requirements
Dispute Resolution
Expert witness in UK billion-dollar claim
Civil claims in relation to the Libor matter
Internal investigation in NL and UK on financial aspects of antitrust claims
Settlement between a listed company, VEB, and major shareholders
Disputes on behalf of a Swiss bank in relation to investments
White Collar Crime
Expert report for public prosecution on a corruption matter
Criminal complaint to prosecutors on behalf of a foreign corporation
Led internal investigation in three countries with up to 30 lawyers
Litigation against the AFM in three instances for listed companies
Boardroom counsellor in US oil futures manipulation matter