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Jon Eisenberg

Fax +1.202.778.9100

Jon Eisenberg is a partner in the firm’s Washington, D.C. office. He focuses on representing financial institutions and individuals in enforcement matters, litigation, and internal investigations.

Professional Background
After leaving the SEC’s Office of General Counsel, Mr. Eisenberg spent roughly half his career in private practice and half in senior in-house positions. He served as General Counsel for UBS Wealth Management Americas, where he headed the legal department responsible for regulatory relationships, litigation, and legal issues involving the broker-dealer and its affiliated bank. Before that, he was General Counsel for Merrill Lynch Global Markets & Investment Banking Litigation and Co-Head of Merrill Lynch Global Litigation, Employment, and Regulatory Affairs. At Merrill Lynch, Mr. Eisenberg helped bring to successful conclusions class actions involving Enron, the bursting of the Internet bubble, alleged manipulation of IPO prices, and execution practices involving Nasdaq market orders. He was a member of the team that developed Merrill Lynch’s successful strategy in the Supreme Court and appellate courts for preempting state law securities class actions, preempting federal antitrust actions involving securities-related activities, preventing so-called “scheme” liability, and establishing the standards for loss causation – decisions that have resulted in the dismissal of billions of dollars of claims. During more than sixteen years in private practice, Mr. Eisenberg has represented firms and individuals in class actions, government investigations, and arbitrations.

  • “Litigation – Individual of the Year Award 2007,” presented by International Law Office.com in conjunction with the Association of Corporate Counsel
Professional/Civic Activities
  • Former Member, Board of Directors of the New York City Bar Justice Center
  • Former Chair, Corporations, Finance, and Securities Law Section of the D.C. Bar
  • Former Chair of the Section Chairs of the D.C. Bar
  • Former Co-Chair, Civil Litigation and SEC Enforcement Subcommittee, American Bar Association Business Law Section
  • Former Member, Amicus Committee, Securities Industry Association (now “SIFMA”)
  • Former Member, Board of Editors, LexisNexis securities law publications
Speaking Engagements
  • Panelist, “From Examination to Enforcement: Examinations and Enforcement Actions Involving Hedge Funds and Private Equity Funds,” Alternative Investment Management Association Hedge Fund Manager Training, New York, NY, January 27, 2016
  • Speaker on panels sponsored by SIFMA, the Investment Company Institute, PLI, ALI-ABA, Glasser Legal Works, and the American Conference Institute.

Mr. Eisenberg is the General Editor of and a contributor to Litigating Securities Class Actions, published by the Matthew Bender division of Lexis/Nexis, as well as the author of Beyond the Basics: Seventy-Five Defenses Securities Litigators Need to Know and dozens of other articles on government enforcement actions and litigation issues.