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John N. Orsini

New York
7 Times Square
New York, NY 10036-6516
Tel: 212.833.1186
Fax: 212.373.7986

John Orsini advises and represents major public companies, private firms, and high-ranking executives in the financial services, technology, and other industries. He represents clients as plaintiffs and defendants in complex business and financial disputes in federal and state courts and before FINRA and other arbitration bodies where he has examined and cross-examined dozens of witnesses at trial and in hearings. His matters involve diverse issues and claims, including breach of contract, breach of fiduciary duty, securities fraud, and business divorces. He has represented a number of companies and individuals in connection with the movement among firms of high-producing financial services professionals and other employees, including in emergency hearings for immediate injunctive relief. He also regularly counsels clients pre-litigation concerning strengths and weaknesses of claims and defenses, and the resulting tactical path forward in difficult circumstances.

Representative Matters

  • Serving as trial counsel in a five-month New Jersey state court jury trial, one of the longest in the court’s history, defending a prominent financial services company against billion-dollar claims of civil racketeering and unfair competition. The court dismissed plaintiff's civil racketeering claims after the close of evidence and the case settled favorably while the jury was deliberating.
  • Acting as trial counsel for one of the world's most prominent inter-dealer brokerage firms in eight consolidated FINRA arbitrations, defending against claims of "raiding," unfair competition, breach of non-competition and non-solicitation agreements, misappropriation of trade secrets, and other business torts. The merits hearings spanned over a year and a half, during which more than 70 witnesses were called to testify. The panel ultimately awarded plaintiffs a fraction of the damages they sought, and awarded significant damages to employees hired by the client.
  • Defending current and former senior public company executives against class action claims of securities fraud and control person liability, including a recent successful motion to dismiss all securities fraud claims against his client and the defeat of class plaintiff's subsequent motion to amend the complaint to reinstate claims.
  • Representing financial services clients in emergency preliminary evidentiary hearing in federal court, at the conclusion of which the court vacated a previously entered TRO against client to enforce post-termination restrictive covenants, denied a preliminary injunction, and later affirmed both decisions on plaintiff's motion for reconsideration.
  • Asserting claims to recover unpaid compensation and severance in a FINRA arbitration on behalf of a former top ranking executive at one of the largest Wall Street investment banks.
  • Representing a well-known toy inventor in litigation over restrictive covenants that were terms of his sale of his company to a leading toy manufacturer.
  • Representing the domestic broker-dealer of operations of a global investment bank in contract and other commercial disputes.
  • Bringing securities fraud and negligence claims on behalf of hedge funds to recover $116 million in losses from Madoff feeder funds' management and their accountants.
  • Representing and counseling a leading provider of enterprise database hosting environments in contract and employment disputes.
  • Representing a leading independent investment bank in fee disputes and other matters.

Outside the Office

Mr. Orsini is a member of the New York City Bar Association's In-House/Outside Litigation Counsel Group.

Fast Facts


Harvard Law School, J.D., cum laude (2002)

Harvard College, A.B., magna cum laude (1998)

Bar Admissions

State of New York

U.S. District Courts for the Southern and Eastern Districts of New York

U.S. Courts of Appeals for the Second and Third Circuits

U.S. Supreme Court


The Honorable Maryanne Trump Barry, U.S. Court of Appeals for the Third Circuit

Honors and Awards

New York Super Lawyers List, 2013-2015

Law Review and Publications

Senior Editor, Harvard Civil Rights-Civil Liberties Law Review

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