Skip to main content

Professionals Professionals Section



Bar Admissions

Court Admissions


Expand All >>
Biography Press Room

Ann Ashton is a partner in the Litigation Department, a member of the Securities Litigation Group and head of the Litigation practice in Washington, D.C. Ann has a wide range of experience in complex litigation matters and parallel proceedings, including securities class actions and individual litigation, shareholder derivative litigation, criminal and civil enforcement proceedings before various federal and state entities, corporate internal investigations, ERISA class action litigation and market conduct class actions and individual litigation. Prior to joining Proskauer, she was a partner and co-head of the Securities, M&A and Corporate Governance Litigation Practice Group at Dewey & LeBoeuf.

Ann is part of a team that practices in the intersection where class actions, shareholder derivative suits, SEC enforcement matters and white collar prosecutions meet.

SEC Enforcement and Class Action Experience

  • Royal Dutch/Shell
  • Global Crossing
  • Waste Management
  • Zurich Insurance Group
  • Dollar General Corporation
  • New York Life (class action only)
  • John Hancock (class action only)
  • American General (class action only)
  • Transamerica (class action only)
  • Pacific Mutual (class action only)
  • Manulife Financial (class action only)
  • Vestas Wind Systems A/S (class action only)
  • North Carolina Mutual
  • Knights of Columbus Fraternal
  • Unity Mutual

Shareholder Derivative Litigation

  • Hewlett-Packard
  • Royal Dutch/Shell
  • Brocade Communications Systems, Inc.
  • Halliburton Company
  • Waste Management, Inc.

Commodity Futures Trading Commission Proceedings

  • Royal Dutch/Shell

State Attorneys General Proceedings

  • Zurich Insurance Group
  • American General
  • New York Life Insurance Company

Department of Justice Proceedings

  • Royal Dutch/Shell
  • Global Crossing
  • Property and casualty insurers
  • S&L-related investigations

Ann is the co-author of the articles “Parallel Proceedings: Cram Sheet,” Wolters Kluwer Law & Business (August 26, 2013), “Defending Directors: Cram Sheet,” Wolters Kluwer Law & Business (October 23, 2012), "Delaware Chancery Court issues decision on collateral estoppel in derivative suits," Westlaw Journal Delaware Corporate (June 25, 2012, Vol. 26, Issue 25), “Pills and Peptics: Airgas and Its Impact On Governance in the Boardroom (It’s Not All About Takeovers),” Securities Regulation & Law, BNA, Inc. (March 28, 2011), and "Internal Corporate Investigations and the SEC's Message to Directors in Cooper," University of Cincinnati Law Review (1996).