Lev L. Dassin is partner of Cleary Gottlieb Steen & Hamilton LLP. Lev joined the firm as a partner in 2009. Lev Dassin’s practice focuses on complex commercial litigation, white-collar criminal defense, regulatory enforcement matters and internal investigations.
Lev has represented prominent corporations and individuals in criminal and regulatory investigations in the United States and internationally involving various forms of alleged corporate misconduct, including securities fraud, bank fraud, wire fraud, mail fraud, foreign bribery, insider trading and antitrust offenses.
He has also represented clients in private commercial disputes, including securities, derivative, intellectual property, mass tort and antitrust litigation. Lev has tried cases in federal and state court, and argued numerous appeals.
Before returning to private practice in 2009, Lev served as Acting U.S. Attorney for the Southern District of New York. In that capacity, he was responsible for all criminal and civil litigation in the district on behalf of the United States and supervised more than 220 Assistant U.S. Attorneys.
He oversaw a number of high-profile matters, including the prosecutions of Bernard Madoff and Marc Dreier, and the representation of the United States’ interest in the Chrysler and General Motors bankruptcy proceedings. Lev previously served as Deputy United States Attorney, the second in command of the office, and as Chief of the Criminal Division, in charge of all of the criminal prosecutions and investigations in the district.
Earlier in his career, Lev served as an Assistant U.S. Attorney. At that time, he prosecuted a wide range of cases involving terrorist acts, racketeering violations, money laundering and other white-collar crimes.
Lev was a lead prosecutor in the investigation and prosecution of Ramzi Yousef, the mastermind of the 1993 terrorist bombing of the World Trade Center. In recognition of his work on that case, Lev was honored with the Attorney General’s Award for Distinguished Service.
He also received the Attorney General’s Award for Exceptional Service for his role in the investigation and prosecution of four other defendants for their participation in the 1993 World Trade Center bombing.
- Adjunct Professor, Columbia Law School
- Law Clerk to the Honorable David N. Edelstein, U.S. District Judge for the Southern District of New York, 1990-1992
- New York University School of Law, J.D., 1990
- Cornell University, B.A., 1987
- New York
- U.S. Supreme Court
- U.S. Court of Appeals for the Second Circuit
- U.S. District Court, Eastern and Southern Districts of New York; District of Connecticut
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