Lindsey Sullivan


  • JD, cum laude, Northwestern University Pritzker School of Law, 2011; notes editor, Northwestern University Law Review; Jessup International Moot Court
  • Bachelor of Commerce, with Distinction, McGill University, 2006


  • Illinois, 2011
  • New York, 2013

Court Admissions

  • U.S. District Court for the Southern District of New York, 2015
  • Honorable Marvin E. Aspen, U.S. District Court for the Northern District of Illinois (2011 - 2012)
  • A Better Chicago, Impact Council (present)
  • America SCORES Chicago, Executive Board (present)

Lindsey Sullivan


Lindsey Sullivan is counsel in the Litigation and Enforcement practice group. Lindsey focuses her practice on defending clients in investigations and enforcement actions before the Securities & Exchange Commission. She routinely advises private equity firms, hedge funds, and other investment advisers regarding their obligations under the federal securities laws, often in connection with SEC examinations. Lindsey also advises clients in a broad array of industries in connection with government and internal investigations involving the FCPA, the U.K. Bribery Act, and other international risk issues. 

In addition, Lindsey has significant experience representing clients in complex commercial disputes and has assisted companies in responding to a wide range of legal issues resulting from data security breaches, including responding to regulators and class action plaintiffs, as well as overseeing forensic investigations and preservation efforts. 

Prior to joining the firm, Lindsey served as a law clerk to the Hon. Marvin E. Aspen of the United States District Court for the Northern District of Illinois.


  • Counseled numerous investment advisers and fund managers in connection with SEC examinations and enforcement matters, including responses to exams, deficiency letters, and investigative subpoenas.
  • Represented international financial services firms, hedge funds, and individual traders in SEC, CFTC, and CME investigations into trading activities.
  • Represented major chain in defending against all third-party claims arising from a payment card incident. 
  • Represented major retailer in responding to card brand inquiries stemming from a data security breach.
  • Represented investment manager and lenders in RMBS trust actions.
  • Assisted with the creation and execution of preservation and collection strategies following high-profile data breach.
  • Assisted Criminal Justice Act appointed counsel in representation of criminal defendant charged with conspiracy, including at jury trial and appeal to Second Circuit.
  • Represented groups of professional economists and law scholars as amici curiae to Supreme Court in two key immigration cases.


Cookie Settings