Biography

Karen A. Popp is the Global Co-Leader of Sidley Austin’s White Collar Practice. Karen has an expansive practice representing companies and individuals in high-profile matters with legal, political and public relations components, such as corporate criminal defense, internal investigationsSEC EnforcementCongressional investigations, OIG and State Attorney General actions, corporate compliance, and litigation.  Chambers Global and Chambers USA recognize her as a leader in the practice area of FCPA/anti-corruption.

Karen represents corporate clients across a host of industries, as well as senior executives and government officials, including a U.S. Presidential Cabinet Member.  She has been retained to lead confidential worldwide internal investigations and defend numerous clients in government investigations.  Karen has extensive experience in FCPA and other anti-corruption matters and has represented clients in investigations in more than 70 countries around the world.

Karen also assists clients in designing and enhancing corporate compliance and ethics programs, and currently serves as outside counsel to several corporate compliance departments. She has conducted global compliance and risk assessments for numerous U.S. and non-U.S. companies. Karen helps companies to respond to internal allegations of wrongdoing, conducts training for Boards of Directors, management, compliance departments and other company personnel, and conducts compliance due diligence regarding corporate acquisitions, joint ventures and other business transactions.   

Before joining Sidley, Karen served in the government as Associate White House Counsel to President Clinton, a lawyer in the Office of Legal Counsel at the U.S. Department of Justice, and Assistant U.S. Attorney in the Eastern District of New York.  She began her career on Wall Street as a litigator at Sullivan & Cromwell after finishing a clerkship for the Honorable Sam J. Ervin III on the U.S. Court of Appeals for the Fourth Circuit.

In additional to Chambers, Karen has been recognized for her White Collar and FCPA practice in Legal 500 US, Benchmark Litigation Star, Global Investigation Review, Who’s Who in Business Crime Defense Lawyers, International Who’s Who of Investigations, The Best Lawyers in America, Washingtonian magazine “Top Lawyers” List, Top 250 Women in Litigation USA, Top 50 Women Lawyers in Washington, D.C., Ethisphere Attorneys Who Matter, Inside Counsel Magazine Leadership Award, and Super Lawyers magazine.