Katherine Reilly

Katherine C. Reilly is a partner in Pryor Cashman’s White Collar + Regulatory Enforcement Group.

Prior to joining Pryor Cashman, Kate spent more than a decade as a federal prosecutor, including serving as Chief of the Complex Frauds & Cybercrime Unit in the U.S. Attorney’s Office for the Southern District of New York, where she led a team of prosecutors handling high-profile cases involving financial crime, tax fraud, healthcare fraud, the Foreign Corrupt Practices Act (FCPA), cybercrime, cryptocurrency enforcement, and sanctions violations.

Kate’s practice focuses on white-collar criminal defense, regulatory investigations and enforcement, complex civil litigation, cybersecurity, and advisory services. A seasoned trial lawyer and former federal prosecutor, she advises corporations, financial institutions, and individuals on high-stakes government investigations, internal compliance matters, and litigation strategy. Kate represents clients facing investigations by government agencies, including DOJ, the SEC, the CFTC, OFAC, and state regulators. She conducts internal investigations, develops proactive compliance strategies, and provides hands-on guidance to corporations, individuals, corporate boards, and others seeking to proactively mitigate regulatory and enforcement risks.

As a former federal prosecutor with experience in a broad range of substantive areas, Kate provides clients facing criminal investigations an inside perspective as to how those investigations might unfold and practical, real world advice about how to proceed. Similarly, having conducted a number of corporate investigations in her time as a prosecutor, Kate is well positioned to guide companies through internal investigations, whether they touch on anything from financial fraud to sensitive employment matters.

Government & Trial Experience

Kate has extensive experience navigating complex regulatory and enforcement landscapes. In almost eleven years as a federal prosecutor, she successfully litigated or supervised cases related to sophisticated fraud and financial crime; tax fraud and evasion; corporate malfeasance; FCPA violations; and cybercrime, including national security-related cyber-attacks, cryptocurrency hacks and scams, ransomware, and computer and network intrusions. Her experience as a prosecutor involves in-depth work in the financial sector, as well as the healthcare, sports, entertainment, and music industries, among others. She also supervised multi-agency investigations in collaboration with international and domestic law enforcement partners, including the SEC, FBI, IRS, CFTC, FTC, FDIC, Federal Reserve, and DOJ’s FCPA unit. She has served as lead trial counsel in or supervised well over a dozen criminal jury trials.