John Nathanson is Global Co-Head of Investigations & White-Collar at A&O Shearman. His practice focuses on United States Department of Justice (DOJ) investigations, Securities and Exchange Commission (SEC) enforcement matters, Commodity Futures Trading Commission (CFTC) investigations, internal investigations, regulatory proceedings and complex financial litigation.
John maintains an active trial practice in both criminal and civil matters involving allegations of financial misconduct. He regularly advises corporations, financial institutions and senior executives on high-stakes investigations, compliance matters and enforcement actions.
Prior to joining the firm in 2009, John served for five years as an Assistant United States Attorney in the Eastern District of New York. During that period, he was assigned to the Business and Securities Fraud Unit for four years and also served as Deputy Chief of the General Crimes Unit. He investigated and prosecuted a wide range of securities fraud matters, including cases involving collateralized debt obligations (CDOs), options backdating, private investment in public equity (PIPE) transactions, insider trading and complex accounting and securities fraud schemes.
Before joining the U.S. Attorney’s Office, John served from 2001 to 2004 as an Assistant District Attorney in the Frauds Bureau of the Manhattan District Attorney’s Office. In that role, he investigated and prosecuted securities and business fraud matters, including the successful prosecution of D.H. Blair & Co., Inc. and several of its executives. Earlier in his career, he practiced at an international law firm where he focused on complex securities litigation and investigation matters.
- Class action
- Commercial
- Commercial and transactions
- Commercial disputes
- Dispute resolution
- Securities
- White collar crime
- Accounting
- Agriculture
- Aviation
- Automotive
- Banking
- Construction and materials
- Consumer goods and services
- Energy
- Financial services
- Fisheries and aquaculture
- Food and beverage
- Forestry
- Gaming
- Government and public policy
- Healthcare
- Industrials
- Insurance
- Investment management
- Media
- Mining
- Natural resources
- Oil and gas
- Pharmaceutical and life sciences
- Real estate
- Shipping
- Social infrastructure
- Technology and telecommunications
- Tourism
- Transport
- Utilities
- JD, University of Pennsylvania 1993
- New York - 1994