About Nathaniel Ament-Stone

Nathaniel Ament-Stone works with a wide variety of clients, primarily in the commodities, financial and manufacturing sectors and also including those in the media, sports, insurance and health care sectors. 

As counsel to companies, individuals, and sovereign states, Nathaniel works with Global 500 clients in billion-dollar market-manipulation and class-action antitrust litigations, and with small businesses and nonprofit organizations in antitrust and other commercial matters. He has represented businesses and individuals in federal and state courts, JAMS and AAA commercial and contract arbitration proceedings, and Federal Trade Commission (FTC) adjudicative proceedings.

Reaching the best outcomes through persuasive and focused advocacy

A strong writer and dogged oral advocate, Nathaniel is experienced in working with plaintiffs and defendants in both bench and jury trials in federal courts, federal-court class actions and appeals, and commercial and contract arbitrations. He frequently handles disputes relating to antitrust, breach of contract, breach of fiduciary duty, fraud, market manipulation, and environmental liabilities.

Nathaniel, who has also submitted amicus briefs to the US Supreme Court, has a particular passion for commercial and antitrust litigation, where he focuses on the goals of each client and unique circumstances each matter brings.

Nathaniel maintains an active pro bono practice, having helped to secure the early release of an incarcerated client as a result of federal civil rights litigation, and a divorce on behalf of a survivor of domestic abuse.

While in law school, Nathaniel served on the University of Chicago Law Review and completed judicial externships for then-Chief Judge Alex Kozinski of the US Court of Appeals for the Ninth Circuit and U.S. District Judge Rebecca Pallmeyer of the Northern District of Illinois.

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Practice Focus

  • Commercial litigation
  • Antitrust litigation
  • Breach of contract
  • AAA arbitrations

News

Publications

Presentations and Events

  • September 21-23, 2020
    2020 Class Action Money & Ethics Conference | An Analysis of the Antitrust Landscape over 10 Years | Speaker
  • May 6, 2019
    2019 Class Action Money & Ethics Conference | Class Certification Update | Speaker
Practices
Industries
Education
  • The University of Chicago Law School, JD
  • The University of Georgia, BA, summa cum laude
Bar Admissions
  • New York
  • California
Court Admissions
  • US Court of Appeals, Second Circuit
  • US Court of International Trade
  • US District Court, District of Colorado
  • US District Court, Eastern District of Michigan
  • US District Court, Eastern District of New York
  • US District Court, Southern District of New York
  • US Bankruptcy Court, Southern District of New York
Recognitions
Recognized or listed in the following:
  • Best Lawyers in America
    Ones to Watch
    Commercial Litigation, 2025
Award Methodologies