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Karl L. Cambronne


Karl Cambronne is a Senior Partner of Chestnut Cambronne. He heads the Class Action, Civil Litigation, and Maritime & Admiralty Law practice groups and is a frequent lecturer on these areas of law. For nearly a decade, he was an Adjunct Professor of Maritime Law at William Mitchell College of Law in St. Paul, Minnesota. He has served as Chairman on the Hennepin County Bar Association Professionalism Committee and is currently the Minnesota State Chair of the American College of Trial Lawyers. He frequently travels to Dodoma, Tanzania, where he supports the development and sustainability efforts of Dodoma Christian Medical Center. Karl currently sits on the Board of Directors for Summit Brewing Company.

In his over thirty years of practicing law, Karl has represented numerous consumers, shareholders, and other individuals, primarily in the areas of securities fraud and consumer fraud. Most recently, Karl was a lead counsel in In re Target Corporation Customer Data Security Breach Litigation, where he settled the case for over $59 million on behalf of financial institutions. He also was lead counsel In re UnitedHealth Group, Inc. Shareholder Derivative Litigation, where he and his litigation team secured a $900 million settlement on behalf of shareholders in the largest stock backdating case to date. He has been a court appointed Special Master in several complex litigation cases. Karl is a Proctor in Admiralty, the highest professional designation within the Maritime Law Association of the United States.