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Litigation Star


New York

Practice area:


Mary Eaton is co-head of the securities and shareholder litigation practice at Freshfields. Mary has extensive experience in complex commercial litigation, with a focus on securities class actions, shareholder derivative claims and other complex business disputes. Mary regularly represents issuers, boards of directors, board committees and senior management across a broad spectrum of industries (including financial services, private equity, asset management and technology) in a wide variety of disputes in federal and state courts across the country. In addition to her substantial trial experience, Mary regularly counsels clients on litigation avoidance and corporate governance matters. 

Mary received her LL.B. from Queen`s University, following which she clerked for Justice Bertha Wilson of the Supreme Court of Canada. Mary received her J.S.D. and LL.M both from Columbia Law School.

In addition to her recognition by Benchmark Litigation as a “Litigation Star” for Securities Litigation, Mary is perennially ranked among leading litigators by Chambers USA, and is recognized by The Legal 500 US and Best Lawyers in America. In 2019, the American Bar Association awarded Mary the Stonewall Award for her contributions to the advancement of LGBT individuals and issues. 

Mary’s recent representations include: 

  • 3M Company, several officers and directors in securities class action and related shareholder derivative suits based on alleged failure to disclose contingent environmental liabilities. 
  • Citigroup and its directors in several shareholder derivative actions and related securities class actions alleging that the board knowingly allowed the company to maintain insufficient operational controls and to violate the terms of regulatory settlements. 
  • Tyson Foods and its officers and directors in securities class action alleging failure to disclose purportedly insufficient COVID-19 safety protocols at Tyson facilities. 
  • Pinterest and its board of directors in stockholder derivative suit alleging breaches of fiduciary duty arising out of alleged failure by management and Board to prevent discrimination. 
  • AstraZeneca, its CEO, and several other executives in securities class action challenging statements regarding clinical trial of its COVID-19 vaccine. 
  • Energy Recovery in securities class action filed in connection with termination of licensing agreement. 
  • CBS Corporation in securities class actions arising out of #metoo allegations against the Company’s former CEO. 


Updated Sep 2021