Partner
Foley & Lardner LLP
Washington DC, District of Columbia
Antitrust, Litigation, and Government Enforcement Defense

Mark Grundvig, a former federal prosecutor with the U.S. Department of Justice (DOJ), focuses his practice on antitrust investigations and litigation, white collar criminal defense and litigation, government investigations, corporate compliance, and congressional investigations as a partner in Foley’s Antitrust & Competition Practice Group.
Prior to Foley, Mark served nearly 25 years with the DOJ, most recently as Assistant Chief in the Washington Criminal II Section of the Antitrust Division. As Assistant Chief, Mark oversaw investigations and prosecutions of criminal violations of federal laws relating to competition matters, including price fixing, bid rigging, customer allocation, and fraud. Mark additionally supervised investigations and litigation handled by the office and provided training, direction, guidance, and approval on investigative plans, litigation strategy, plea resolutions, leniency applications, compliance proposals, and outreach efforts. He regularly coordinated with foreign jurisdictions and domestic agencies on case-related matters and served as a senior trial attorney for the Antitrust Division.
While Mark’s experience at the DOJ encompassed a wide range of enforcement actions across a broad range of industries, significant focuses of his were criminal antitrust enforcement in the health care industry, international cartel enforcement and the transportation industry, government procurement enforcement, corporate compliance, and leniency investigations.
Earlier in his career, Mark spent two years working on the Senate Judiciary Subcommittee on Antitrust, Competition Policy, and Consumer Rights, examining various competition issues.
Foley & Lardner LLP
Washington DC, District of Columbia
U.S. Department of Justice (DOJ), Antitrust Division, Washington Criminal II
(appointed)District of Columbia
U.S. Department of Justice (DOJ), Antitrust Division / Washington Criminal I
(appointed)District of Columbia
U.S. Department of Justice (DOJ), Antitrust Division
(appointed)District of Columbia
Trial counsel with the Antitrust Division focusing on criminal investigations and prosecutions of violations of antitrust, competition and related laws including price fixing, bid rigging, customer allocation, fraud, and bribery (including the Foreign Corrupt Practices Act). Served as lead counsel on a broad range of cases in the real estate, aviation, automobile and maritime industries among others.
U.S. Attorney’s Office
(appointed)Virginia Eastern
As a Special Assistant United States Attorney (SAUSA), I was responsible for all aspects of felony and misdemeanor criminal prosecutions including: investigation, grand jury, motions, plea negotiation, trial preparation, trial and sentencing. Successfully litigated numerous matters including three felony jury trials.
U.S. Department of Justice (DOJ), Antitrust Division
(appointed)District of Columbia
Trial counsel with the Antitrust Division focusing on criminal investigations and prosecutions of violations of antitrust, competition and related laws including price fixing, bid rigging, and customer allocation.
U.S. Senate, Judiciary Subcommittee on Antitrust, Competition Policy and Consumer Rights
(appointed)District of Columbia
Counsel for Senator Mike DeWine, Chairman, Antitrust Subcommittee. Responsible for identifying, analyzing and addressing relevant competition issues; drafting legislation; resolving constituent concerns; and developing and organizing subcommittee hearings on business and competition matters. I organized hearings relevant to numerous industries including high tech, health care, media, agriculture, telecommunications, sports and aviation.
U.S. Department of Justice (DOJ), Antitrust Division
(appointed)District of Columbia
Trial counsel with the Antitrust Division focusing on criminal investigations and prosecutions of violations of antitrust, competition and related laws including price fixing, bid rigging, and customer allocation.
Court of Appeals - Division I
(appointed)Arizona
Law clerk to the Hon. Thomas C. Kleinschmidt. Conducted extensive legal research, drafted opinions and presented cases to panels of judges in wide range of cases involving criminal and civil matters.
DOJ Antitrust Division
January 2021
In recognition of long-term achievement and exemplary work ethic of a career litigator and litigation manager.
DOJ Antitrust Division
January 2023
2007, 2014, 2018, 2022
DOJ
January 2009
January 2009
Foley Insights
July 2024
Co-Author
Foley Insights
June 2024
Co-Author
Foley Insights
June 2024
Co-Author
Foley Insights
May 2024
Co-Author
Foley Insights
April 2024
Co-Author
Embassy of Japan, Washington, D.C.
October 2023
Speaker
January 2019
Moderator
January 2016
Speaker
Detroit, Michigan
Speaker
Taipei, Taiwan
January 2014
Speaker