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

In white-collar matters, Zach has represented chief executive officers and other business executives, federal and state politicians, entrepreneurs, traders, bankers, unions, labor leaders, lawyers, activists, and corporations in indicted criminal cases, government investigations, and regulatory enforcement actions.  These matters have involved allegations such as 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 actions and 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 involve parallel investigations by authorities in other countries.

In civil matters, Zach maintains a robust trial practice representing both plaintiffs and defendants in high-stakes litigation across the United States.  He has represented multinational corporations, professional services firms, and individuals in their most important cases and acts as lead counsel in jury trials, class actions, and multi-district litigation.  His representations have involved many substantive areas of law including antitrust, securities, torts, commercial disputes, administrative law, constitutional law, deceptive trade practice statutes, and employment law.

Zach grew up in California, Cambodia, 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.

Zach currently runs the firm’s pro bono criminal defense program in Montgomery County, Maryland.  Through that program, the firm’s lawyers represent indigent criminal defendants in felony trials in Montgomery County.




Other Government Service

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

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