John Nathanson

John is Global Co-Head of Investigations & White Collar and focuses on United States Department of Justice (DOJ) inquiries, Securities and Exchange Commission (SEC), Commodity Futures Trading Commission (CFTC) and other regulatory matters, internal investigations and financial litigation.

John maintains an active trial practice in both criminal and civil financial misconduct cases.

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, where he was assigned to the Business and Securities Fraud Unit for four years and served as Deputy Chief of the General Crimes Unit. During his time at the U.S. Attorney’s Office, John investigated and prosecuted numerous securities fraud matters, including cases involving CDOs (Bear Stearns asset managers), options backdating, private investment in public equity (“PIPE”), insider trading and other complex accounting and securities frauds.

Before the U.S. Attorney’s Office, from 2001 to 2004, John served as an Assistant District Attorney (ADA) in the Frauds Bureau of the Manhattan District Attorney’s Office. While an ADA, John investigated and prosecuted securities and other business fraud cases, including the successful prosecution of brokerage D.H. Blair & Co., Inc. and several of its executives. Prior to becoming an ADA, John worked as an associate at global law firm primarily on complex securities litigation and investigation matters.