Brendan F. Quigley


New York

P: +1.212.408.2520
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Brendan Quigley

Brendan Quigley represents clients in both government and internal investigations and complex commercial disputes. He is an experienced, first-chair trial lawyer, having tried a dozen jury cases to verdict while an Assistant U.S. Attorney in the Southern District of New York, including multiple securities fraud trials and complex cases involving classified information.

Before becoming a lawyer, Brendan served for four years as a combat-arms officer in the U.S. Marine Corps, where he first developed the rigor, attention to detail, and tenacity that he uses to help get the best results for clients today.

Since joining Baker Botts, Brendan has represented both individuals and companies in the fintech, energy, engineering, financial services, and technology sectors. His investigations and white-collar defense experience includes multiple matters before various branches of the U.S. Department of Justice, the New York Attorney General, and foreign regulators. He also counsels clients on regulatory and compliance issues related to Anti-Money Laundering (AML) and sanctions, the False Claims Act, and the Foreign Corrupt Practices Act.

In the commercial disputes area, he has represented both plaintiffs and defendants, and appeared in matters in federal district courts, federal bankruptcy courts, and New York State courts and in arbitration proceedings. Drawing on his experience as a prosecutor, these matters have often involved allegations of fraud and/or corruption.

Immediately prior to joining Baker Botts, Brendan spent almost seven years as an Assistant United States Attorney in the Southern District of New York (SDNY), becoming a senior member of the Office's Securities and Commodities Fraud Unit and one of its most seasoned trial lawyers.

Brendan also served for several years in SDNY's Terrorism and International Narcotics Unit, where he gained extensive experience investigating and litigating matters involving sanctions and export control, cybercrime, money laundering, and espionage, including numerous matters involving classified information and litigation under the Foreign Intelligence Surveillance Act and the Classified Information Procedures Act.

Earlier in his legal career, Brendan spent a year clerking for the Honorable Joseph F. Bianco, then a U.S. District Judge in the Eastern District of New York, now of the Second Circuit.

Between 2001 and 2005, Brendan served as an officer in the U.S. Marine Corps. He completed two tours of combat duty in Iraq and was honorably discharged with the rank of Captain.

Related Experience

Government Investigations/White-Collar Defense

  • Representation of business executive originally charged with money laundering in the Southern District of New York. Client pled to a lesser offense and, despite a 30-37 months’ Guidelines range, received a sentence of only two months.
  • Counseling multiple clients on AML and sanctions related issues, in particular in connection with Russian sanctions following Ukraine invasion.
  • Representation of multiple executives at investment banks in connection with investigations by the Securities and Exchange Commission.
  • Representation of Fortune 50 company in False Claims Act investigation by the Department of Justice.
  • Representation of military and law enforcement contractor in False Claims Act investigation by the Department of Justice.
  • Representation of pharmaceutical company in False Claims Act investigation by the Department of Justice.
  • Representations of multiple individuals and entities in securities fraud, FCPA, and public corruption investigations and prosecutions by the U.S. Attorney's Offices for the Southern District of New York and Eastern District of New York, DOJ's Fraud Section, and/or foreign authorities.
  • Co-author of amicus brief in the U.S. Court of Appeals for the 11th Circuit, raising constitutional issues concerning the government’s breaches of the attorney-client privilege while conducting a search of defendant’s office. Amicus brief later cited in presidential commutation of defendant’s sentence.

Commercial Disputes

  • Representation of a fintech company in Securities Act claim filed in New York County Supreme Court. Delivered oral argument and was granted dismissal with prejudice.
  • Representation of fintech company in pending class action in the Southern District of New York.
  • Representation of large insurance company in multiple commercial litigations in the Southern District of New York.
  • Representation of energy company in fraud and breach of contract action in the Eastern District of New York.
  • Representation of a global engineering firm in a pending lawsuit under the Anti-Terrorism Act in the District of Columbia
  • Representation of multiple clients in connection with adversary proceedings in federal bankruptcy court.
  • Representation of clients in arbitrations before the American Arbitration Association and the London Court of International Arbitration.

Significant Securities Fraud Prosecutions (prior to joining Baker Botts)

  • Multi-defendant RICO and securities fraud prosecution arising out of the world's largest private equity insolvency (United States v. Naqvi, et al.)
  • Prosecution and trial of radio talk-show host for securities fraud and wire fraud (United States v. Carton)
  • Prosecution and trial of multiple defendants for securities fraud and investment adviser fraud (United States v. Galanis, et al.)
  • Prosecution of defendant for running nine-figure Ponzi scheme involving investments related to the purchase and resale of event tickets (United States v. Meli)
  • Prosecution of former Chief Financial Officer of publicly traded company for lying to auditors (United States v. Jacoby)
  • Prosecution of multiple defendants for insider trading

Other Significant Prosecutions (prior to joining Baker Botts)

  • Prosecution and high-profile trial of members of the Venezuelan first family for narcotics trafficking (United States v. Flores)
  • Prosecution of employee of Russian state-owned bank, for acting as a Russian intelligence officer in the United States (United States v. Buryakov)
  • Counsel in the district court and the Second Circuit for case involving constitutional challenges to the Sex Offender Registration and Notification Act; conviction affirmed by the Supreme Court of the United States in a 5-3 decision in June 2019 (United States v. Gundy)
  • First ISIS-related prosecution and trial in the SDNY which involved extensive litigation under the Classified Information Procedures Act (CIPA) and Foreign Intelligence Surveillance Act (FISA) (United States v. Gammal)


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