William J. Stellmach

A distinguished former federal prosecutor and regulator, Bill Stellmach previously served as head of the Fraud Section of the U.S. Department of Justice (DOJ) and now co-chairs both Willkie’s global Investigations & Enforcement and White-Collar Defense Practice Groups. His practice focuses on internal and government-facing investigations, criminal and regulatory enforcement defense, and corporate monitorships, with experience across the full spectrum of federal, state, and foreign authorities. Drawing on a wide range of experience, Bill regularly represents a broad range of corporations, financial institutions, and their boards and executives in matters involving securities and commodities fraud, foreign bribery, economic sanctions, the False Claims Act, antitrust, ESG, international money laundering, and compliance issues and investigations related to artificial intelligence (AI) and other emerging technologies. He also has extensive experience representing corporations and individuals outside the United States in cross-border inquiries and investigations. Bill routinely represents these clients before every major U.S. regulator, including the DOJ, the U.S. Securities & Exchange Commission (SEC), the U.S. Commodity Futures Trading Commission (CFTC), and the U.S. Treasury Department’s Office of Foreign Asset Control (OFAC); numerous self-regulatory organizations, including the New York Stock Exchange (NYSE), the Financial Industry Regulatory Authority Inc. (FINRA), and Options Clearing Corporation (OCC); and several U.S. state financial and legal regulators, including the New York Department of Financial Services (NYDFS) and various state attorneys general.