
Education
University at Albany - State University of New York, B.A.
Boston University School of Law J.D., cum laude
Admissions
- New York
- District of Columbia
- New Jersey
- Pennsylvania
- U.S. Courts of Appeals for the Second, Third and Ninth Circuits
- U.S. District Courts for the Southern and Eastern Districts of New York
Derek A. Cohen is widely recognized as a leading trial lawyer with over 30 years’ experience investigating, defending and counseling clients in high stakes litigation matters. His practice focuses on financial fraud, commercial litigation, investigations, criminal defense, and courtroom advocacy.
Derek is a highly decorated former federal prosecutor and seasoned trial lawyer. Derek regularly represents U.S. and foreign companies and individuals in a wide range of criminal and regulatory investigations by federal, state and local authorities, including, among others, allegations of healthcare fraud, securities fraud, tax fraud, bribery, False Claims Act, sanctions/export violations, product recalls, antitrust, and Foreign Corrupt Practices Act (FCPA) violations. He also has significant experience in complex commercial litigation matters and internal investigations.
Derek is the recipient of the highest awards bestowed by the Department of Justice and the FBI for his work as a federal prosecutor.
"Derek is highly skilled" and " . . .is a really talented trial lawyer." - Chambers USA, 2024
Clients benefit from Derek's extensive prior prosecutorial experience. He served in the Criminal Division of the U.S. Department of Justice, where he was Deputy Chief of the Division's Fraud Section. Derek also previously served as an Assistant U.S. Attorney with the U.S. Attorney's Office in Philadelphia, where he prosecuted some of the office's most significant white-collar matters. Derek began his career as an Assistant District Attorney in Manhattan under the Hon. Robert M. Morgenthau.
He has taught Trial Advocacy at Temple Law School and has guest lectured at Harvard and Penn Law Schools in the area of white-collar crime. He currently serves on the Tulane Law School Intersession Faculty for Criminal Law.
Significant Representations
- Obtained a jury verdict against Eli Lilly for over $200 million in a False Claims Act trial in the Northern District of Illinois
- The successful defense at trial of former J.P. Morgan Securities LLC analyst Ashish Aggarwal on conspiracy, insider trading, and wire fraud charges. A Central District of California jury found Aggarwal not guilty related to his role in an alleged insider trading scheme. This was a rare defense victory in an insider trading case and the first since the December 2016 U.S. Supreme Court decision in Salman v. United States lowered the bar for prosecutors in insider trading cases.
- Secured a deferred prosecution agreement for a publicly traded transportation company in connection with an investigation into accounting and securities fraud by the U.S. Department of Justice and the SEC.
- Obtained a non-jail sentence for an individual convicted in the Southern District of New York with FCPA violations for bribing the former President of the United Nations General Assembly.
- Avoided charges for a Fortune 500 company under investigation for potential environmental crimes by Federal and State authorities.
- Avoided charges for a London-based bond trader in a criminal antitrust investigation by the U.S. Department of Justice.
- Avoided charges for a publicly traded biotech company under criminal investigation by the DOJ for alleged trade secret theft.
- Avoided charges for employees of a major automobile parts manufacturer under criminal investigation in connection with a product recall.
Awards & Recognitions
- Ranked in Chambers USA for Litigation: White-Collar Crime & Government Investigations, 2015-2025
- Named as one of the "500 Leading Litigators in America" by Lawdragon, 2025 & 2026
- Recognized in Benchmark Litigation, 2023
Media Mentions
- May 2026Press Release, May 4, 2026