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Jessica Lonergan
Of Counsel
Litigation
New York

D212-453-2849

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  • Diverse Litigation Practice

    Jessica represents companies and individual clients in white collar criminal defense cases, internal and government-facing investigations, and compliance and regulatory matters.

  • Experienced Trial Attorney and Investigator

    Jessica served for over 10 years as a federal prosecutor. She led over 175 grand jury investigations and prosecutions. She has conducted ten criminal jury trials and briefed and argued numerous appeals in the Second Circuit Court of Appeals.

  • Thought Leader

    Jessica frequently writes about white collar crime. She has been quoted in high-profile publications including Bloomberg, The Wall Street Journal, Slate, and Law360.

Jessica Lonergan is Of Counsel in the New York office of Wilson Sonsini Goodrich & Rosati. Her practice focuses on representing and defending clients in governmental and internal investigations and criminal and regulatory prosecutions. She regularly assists clients in navigating sensitive and high-stakes matters, both internally and before the Department of Justice, the U.S. Securities and Exchange Commission, and other regulatory bodies, on a wide range of issues, including public corruption, fraud, the Foreign Corrupt Practices Act (FCPA), health care fraud, Bank Secrecy Act violations, money laundering, and False Claims Act violations.

Jessica is an experienced trial lawyer and investigator with a deep understanding of how prosecutors and the Justice Department approach criminal cases. This experience shapes her approach to guiding clients by anticipating and preparing for issues that could arise at trial from the outset of the representation.

Prior to joining the firm, Jessica spent more than 10 years as an Assistant United States Attorney in the Criminal Division of the U.S. Attorney’s Office for the Southern District of New York. In this position, she led more than 175 grand jury investigations and prosecutions involving bribery, Foreign Corrupt Practices Act violations, bank and wire fraud, frauds against the government, tax evasion, labor union fraud, racketeering, money laundering, and narcotics trafficking. In addition, Jessica conducted nine criminal jury trials and briefed and argued numerous successful appeals in the Second Circuit Court of Appeals. She has been quoted in high-profile publications, including Bloomberg, The Wall Street Journal, Slate, and Law360.

Previously, Jessica served as a law clerk to the Honorable Julio M. Fuentes in the U.S. Court of Appeals for the Third Circuit. She also clerked for the Honorable Jan E. DuBois in the U.S. District Court for the Eastern District of Pennsylvania. Jessica is a member of the Federal Bar Council’s Federal Criminal Practice Committee and the New York City Bar’s White Collar Crime Committee.

Experience

Jessica Lonergan is Of Counsel in the New York office of Wilson Sonsini Goodrich & Rosati. Her practice focuses on representing and defending clients in governmental and internal investigations and criminal and regulatory prosecutions. She regularly assists clients in navigating sensitive and high-stakes matters, both internally and before the Department of Justice, the U.S. Securities and Exchange Commission, and other regulatory bodies, on a wide range of issues, including public corruption, fraud, the Foreign Corrupt Practices Act (FCPA), health care fraud, Bank Secrecy Act violations, money laundering, and False Claims Act violations.

Jessica is an experienced trial lawyer and investigator with a deep understanding of how prosecutors and the Justice Department approach criminal cases. This experience shapes her approach to guiding clients by anticipating and preparing for issues that could arise at trial from the outset of the representation.

Prior to joining the firm, Jessica spent more than 10 years as an Assistant United States Attorney in the Criminal Division of the U.S. Attorney’s Office for the Southern District of New York. In this position, she led more than 175 grand jury investigations and prosecutions involving bribery, Foreign Corrupt Practices Act violations, bank and wire fraud, frauds against the government, tax evasion, labor union fraud, racketeering, money laundering, and narcotics trafficking. In addition, Jessica conducted nine criminal jury trials and briefed and argued numerous successful appeals in the Second Circuit Court of Appeals. She has been quoted in high-profile publications, including Bloomberg, The Wall Street Journal, Slate, and Law360.

Previously, Jessica served as a law clerk to the Honorable Julio M. Fuentes in the U.S. Court of Appeals for the Third Circuit. She also clerked for the Honorable Jan E. DuBois in the U.S. District Court for the Eastern District of Pennsylvania. Jessica is a member of the Federal Bar Council’s Federal Criminal Practice Committee and the New York City Bar’s White Collar Crime Committee.

Focus Areas
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DOJ Raises Expectations on AI, Data Analytics, and More in New Guidance on Corporate Compliance
On September 23, 2024, the Department of Justice (DOJ) updated its Evaluation of Corporate Compliance Programs policy (ECCP), which outlines the key factors prosecutors consider when evaluating the effectiveness of a corporation’s compliance program in connection with charging decisions and resolutions.
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Client Highlights
Wilson Sonsini-Advised Art Institute of Chicago Prevails in Ownership Dispute over Egon Schiele Drawing
On February 28, 2024, Judge John Koeltl of the federal district court in Manhattan dismissed an attempt to challenge the Art Institute of Chicago’s legal ownership of an Egon Schiele drawing, “Russian War Prisoner.” In the latest memorandum, Koeltl upheld his prior decision to dismiss the case brought by the heirs of a Fritz Grünbaum, who alleged that the drawing was stolen from the Austrian Jewish performer by Nazis during World War II.
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