Justin S. Weddle


Justin Weddle is a skilled trial lawyer, litigation strategist, counselor, and appellate advocate. When the stakes are high, clients rely on his tenacity and incisive analysis for tailor-made strategies and solutions in both domestic and cross-border criminal, civil, and regulatory matters. As a result, Justin Weddle is a regular participant in the highest-profile investigations, trials, and appeals, such as:

  • LIBOR criminal cases
  • The FIFA corruption case
  • Circuit Court cases on SEC disgorgement and ALJ appointment issues
  • U.S. investigation and litigation relating to Brazil’s Lava Jato investigation
  • The Supreme Court Lucia decision rejecting the SEC’s ALJs as unconstitutional
  • The KPMG-PCAOB leaks criminal jury trial in the Southern District of New York

Justin prosecuted white collar crime for more than 12 years as an Assistant United States Attorney in the Southern District of New York, building and trying complex fraud cases. He served in the Computer, Hacking, and Intellectual Property section, the Major Crimes Unit, the Complex Frauds Unit, and the Securities and Commodities Fraud Task Force. Justin’s government service culminated in his appointment as Deputy Chief of Appeals, supervising briefing and arguments in the U.S. Court of Appeals for the Second Circuit for three years. He has personally conducted thirteen arguments before the Second Circuit.

From 2008 to 2010, Justin served as the U.S. Department of Justice’s Resident Legal Adviser in Bucharest, Romania, focusing on cross-border law enforcement cooperation and information sharing in Southeast Europe. He was the lead U.S. representative at multilateral treaty negotiations to create the Southeast European Law Enforcement Center, an international police and customs cooperation center, and worked closely with EU representatives and European prosecutors.

  • Represented one of the lead trial defendants in a federal criminal prosecution and four-week jury trial in the Southern District of New York alleging fraud charges based on the alleged leak of PCAOB inspection information to KPMG.


  • Columbia University School of Law, J.D. 1995
    Managing Editor, Columbia Law Review
    Kent Scholar, Stone Scholar
  • Haverford College, B.A. 1992

Bar Admissions

  • New York
  • Massachusetts
  • U.S. District Courts: Southern District of New York, Eastern District of New York, and District of Massachusetts
  • U.S. Courts of Appeals: First, Second, Third, Tenth, Eleventh, and D.C. Circuits
  • U.S. Supreme Court


  • Recognized by Super Lawyers as a Top Rated White Collar Crimes Attorney in New York, NY, since 2017
  • Listed in Who’s Who Legal, Business Crime Defense for both Corporates and Individuals

Professional Activities

  • NYC Bar Association Federal Courts Committee

    • Chair of the Appeals Subcommittee

Teaching Experience

  • Adjunct Professor of Clinical Law, NYU School of Law, 2012-2014


  • Law Clerk for the Honorable Peter K. Leisure, Southern District of New York, 1995-1996
  • “Prosecutors Should Be Wary Of Overreach
    After Marinello,” Law 360
    Published: March 30, 2018