Zach Warren is a trial lawyer who represents individuals and corporate clients in complex criminal and civil matters.  He has litigated dozens of cases in federal and state courts and before arbitration panels, and has served as first-chair trial counsel in matters around the country.  He also regularly represents clients in investigations by grand juries, federal and state agencies, attorneys general, disciplinary bodies, boards of directors, and the United States Congress.

In criminal matters, Zach has represented chief executive officers and other business executives, federal and state politicians, entrepreneurs, traders, lawyers, activists, and corporations in indicted criminal cases and government investigations.  These criminal matters have involved allegations of mail and wire fraud, securities fraud, insider trading, market manipulation, political corruption, tax crimes, antitrust offenses, false statements, money laundering, and violations of the Foreign Corrupt Practices Act and Foreign Agents Registration Act.  Zach’s experience includes investigations by the Department of Justice, United States Attorneys’ Offices, Securities and Exchange Commission, Commodity Futures Trading Commission, state attorneys general, and other law enforcement agencies.  Many of these matters have involved parallel investigations by foreign authorities.

In civil matters, Zach represents both plaintiffs and defendants in high-stakes litigation across the United States.  He has represented multinational corporations and individuals in their most important cases and has served as lead counsel in class actions and jury trials.  His representations have involved many substantive areas of law, including commercial disputes, antitrust, securities, administrative law, constitutional law, breach of contract, ERISA, unfair trade practices, employment law, and wage-and-hour violations.  

Zach grew up in California and Virginia.  He received his B.A. from Stanford University and graduated magna cum laude from Georgetown University Law Center, where he was Executive Articles Editor of the Georgetown Law Journal.  He clerked for Judge J. Frederick Motz on the United States District Court for the District of Maryland, and for Judge Julia Smith Gibbons on the United States Court of Appeals for the Sixth Circuit.




Other Government Service

Law Clerk, United States Department of Justice, Civil Division, Appellate Staff, 2011

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