Mark is a first-chair trial lawyer with more than 30 years of experience litigating in both the public and private sectors. A seasoned antitrust litigator, Mark represents companies and individuals in connection with national and international antitrust and criminal matters, including cartel defense, criminal enforcement investigations, and merger and civil non-merger cases. He also has extensive experience handling Foreign Corrupt Practices Act (FCPA) violations, fraud investigations, bribery, obstruction of justice and kickbacks. Mark has served as lead lawyer in many prominent government enforcement actions as well.
Mark previously served as Assistant Chief of the National Criminal Enforcement Section in the DOJ’s Antitrust Division, where he oversaw teams of trial attorneys and law enforcement agents who prosecuted numerous cartel cases and related violations. He also served as Special Assistant to the Directors of Enforcement in the Antitrust Division’s Office of Operations, where he assisted Directors and Deputy Assistant Attorneys General in criminal matters and merger and civil non-merger cases. Mark also worked on many cases involving amnesty, recommended indictments, plea agreements, immunity, investigations, and case development.
Mark is a prolific speaker and author on antitrust law topics, including cartel investigations and enforcement, as well as criminal and civil litigation and investigations. He has been repeatedly featured and recognized by legal and industry publications including Chambers USA, Global Competition Review and Law 360.
Education
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University of Florida College of Law, J.D.
With Honors
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University of Pennsylvania, B.A.
English
Admissions & Qualifications
- District of Columbia
- California
- Colorado
- Florida
Court Admissions
- U.S. District Court, District of Columbia
- U.S. District Court, California, Northern District
- U.S. District Court, Massachusetts
- U.S. District Court, Michigan, Western District
- U.S. District Court, Florida, Southern District
- U.S. Court of Appeals, Eleventh Circuit
Memberships
Member, Board of Trustees, The Phillips Collection
Vice Chair, American Bar Association, Antitrust Section - International Cartel Task Force
Former member, Board of Trustees, Smithsonian Institution, Hirshhorn Museum and Sculpture Garden
Non-Governmental Advisor (USA), International Competition Network
Member, International Bar Association, Antitrust Section - Cartel Working Group
Past chair, American Bar Association, Section of Antitrust Law
Member, American Bar Association, Criminal Justice Section - Cartel and Criminal Practice Committee
Awards & Recognition
Benchmark Litigation, Litigation Star, 2021
Chambers Global: USA: Antitrust: Cartel (Band 1) 2017-2024
Chambers USA: Nationwide, Antitrust: Cartel (Band 1) 2013-2024
Chambers USA: District of Columbia, Antitrust 2012-2024
Lawdragon 500 Leading Litigators in America 2025
Who’s Who Legal (WWL) Thought Leaders: Competition 2021
Global Competition Review (GCR) 100, 2015, 2023
The Attorney General's Award for Distinguished Service, 2009
Award of Excellence – Investigation, The Council of the Inspectors General on Integrity and Efficiency Award, 2009
The Assistant Attorney General's Award of Distinction, 2008
FBI Award of Recognition for Outstanding Prosecutorial Skills, 1998
The Assistant Attorney General's Outstanding Contribution Award, 1994