Skip to Main Content

A former AUSA with substantial experience in private practice, Cormac defends individual and corporations facing criminal and civil investigations.

Cormac is a trial lawyer with two decades of experience with high-stakes litigation and investigations, both as a prosecutor and as defense counsel. He has advised dozens of clients facing criminal and civil investigations involving all manner of federal criminal investigations, False Claims Act allegations, and Foreign Corrupt Practices Act claims. Cormac regularly assists clients with responses to formal and informal investigative inquiries, including Grand Jury subpoenas, Office of Inspector General subpoenas, civil investigative demands, and 28 U.S.C. § 1783 subpoenas.

Cormac has advised federal contractors facing fraud and other types of investigations. Cormac also has managed internal investigations on behalf of corporate clients related to concerns about regulatory, statutory, or policy compliance by management and employees. When advising clients, Cormac turns investigatory data into cogent, actionable advice, routinely presenting findings and assessments of potential areas of risk or legal exposure to management. He advises boards of directors and senior management regarding internal investigation findings, recommended corrective actions, and interactions with U.S. law enforcement authorities.

Cormac understands that interacting with government agencies and investigators can be stressful. He provides clients with end-to-end representation, guiding clients during interviews and interactions with government investigators, coordinating responses to subpoenas, and handling civil investigative demands and other information requests.

In 2008, Cormac left private practice to join the U.S. Attorney’s Office for the District of Columbia, where he served as an Assistant U.S. Attorney for nearly four years. As an AUSA, Cormac served as lead prosecutor in 24 criminal trials and investigated hundreds of criminal cases, managed Grand Jury investigations, and coordinated investigative activities by law enforcement personnel. He brings that perspective and insider knowledge to every representation, providing clients with strategic advice in managing risk and—ideally—avoiding prosecution through preventive compliance.




  • The Best Lawyers in America®, Criminal Defense: White-Collar, 2023


  • J.D., Georgetown University Law Center
    • Dean's List
    • Immigration Law Journal
  • B.A., Davidson College
    • History


  • District of Columbia
  • Virginia
  • U.S. District Court, Eastern District of Virginia
  • U.S. District Court, District of Columbia
  • U.S. Court of Federal Claims

Professional Memberships and Certifications

  • Board Member, AUSA Association (USADC), 2015–present
  • Law Firm Liaison, Legal Aid Society of DC, 2014–2018
  • Member, The Barristers, 2016–present
Community Leadership
  • Board Member, Eagle’s Nest Foundation, 2013–present

Stay updated.

Subscribe to receive Husch Blackwell’s news and insights.

Select your preferences