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Provided by Brian Klein
Brian is a distinguished trial lawyer who is nationally recognized for his fierce, successful advocacy on behalf of clients in federal and state courts across the country. A former federal prosecutor, he represents clients in high-stakes civil litigation and complex criminal and regulatory defense matters, including those involving the US Department of Justice, Securities and Exchange Commission Commodity Futures Trading Commission, and state authorities. His clients include fast-growing and innovative companies, and larger companies that are often at the forefront of emerging technologies and their industries.
Provided by Chambers
Brian Klein is one of the pre-eminent cryptocurrency litigators in the USA. He has represented a number of businesses in responding to regulatory inquiries and defended them against criminal prosecutions. Klein joined Cooley in December 2025.