Matthew Nielsen represents companies, boards, executives and individuals in the investigation and defense of regulatory, civil and criminal matters involving securities laws, accounting and disclosure issues, healthcare fraud, anti-corruption laws, US export controls and sanctions regulations and whistleblower complaints. In addition, Matthew has significant experience representing clients before federal and state law enforcement and investigative agencies, including the Securities and Exchange Commission (SEC), Department of Justice (DOJ), Financial Industry Regulatory Agency (FINRA), Bureau of Industry and Security (BIS), Department of the Treasury and other federal and state agencies.

Drawing on nearly 25 years of experience defending clients in government investigations and litigation, Matthew assists management and directors in running internal investigations; addressing sensitive governance issues; and establishing and evaluating compliance programs to help deter and detect problems early. When issues cannot be avoided or resolved, Matthew brings his substantial trial experience to defend clients in state and federal courts, administrative proceedings and arbitrations.