Zach Warren is a trial lawyer who represents corporate clients, professional firms, and individuals in complex criminal and civil matters. He has a nationwide trial practice and has prevailed as first-chair trial counsel in federal and state courts and before arbitration panels. He also regularly represents clients in investigations by grand juries, federal and state agencies, boards of directors, disciplinary bodies, and the United States Congress.
In white-collar matters, Zach has represented multinational corporations, C-suite executives, federal and state politicians, entrepreneurs, commodity traders, bankers, labor unions, lawyers, activists, and many others 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, harboring of aliens, public corruption, tax crimes, antitrust offenses, obstruction of justice, false statements, money laundering, and violations of the Foreign Corrupt Practices Act (FCPA) and Foreign Agents Registration Act (FARA). Zach’s practice encompasses 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 represents both plaintiffs and defendants in high-stakes litigation across the United States. He has represented Fortune 500 companies, leading professional firms, and high-profile 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, complex torts, commercial contract disputes, products liability, administrative law, constitutional law, unfair trade practice statutes, and employment law.
Zach teaches federal white-collar crime at Georgetown Law. He also oversees Williams & Connolly’s pro bono criminal defense program in Montgomery County, Maryland. Through that program, more than 150 of the firm’s lawyers have represented indigent criminal defendants in felony jury trials in Montgomery County. Zach is also a member of the Board of Directors of the Association for the Public Defender of Maryland, which supports the activities and mission of the Maryland Office of the Public Defender.
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.