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Dana M. Seshens


Co-head of Civil Litigation. Focuses on complex commercial litigation and securities class actions, with considerable experience in trials and arbitrations.

Dana is co-head of our Civil Litigation group. Her practice focuses on complex commercial litigation and securities class actions, with considerable experience representing clients in trials and arbitrations.

She also works on bankruptcy litigation and IP litigation matters.

Dana represents various corporate clients and financial institutions, and has extensive experience across a wide range of civil litigation and advisory matters.

Dana is ranked by Chambers USA for securities litigation and is also a Benchmark Litigation U.S. and New York Star. Crain’s New York Business included Dana on its 2021 list of Notable Women in Law.

Experience highlights

  • Rite Aid in securities litigation relating to its pharmacy benefit management service
  • The founder and CEO of Bumble in shareholder litigation in Delaware Chancery Court
  • Universal Television and Jimmy Fallon in securities and consumer litigation concerning Bored Ape Yacht Club NFTs
  • Comcast in a breach of contract and trade secret misappropriation dispute with MaxLinear
  • IHS Markit in a joint venture dispute in Delaware Chancery Court
  • Kornit Digital in a securities class action
  • Comcast in a breach of contract action brought by Nexstar
  • A leading lithium technology manufacturer in an ICC arbitration
  • Multinational pharmaceutical company in:
    • Trade-secret litigation brought against former employees and founders of a new competitor
    • Litigation alleging trade-secret misappropriation and other claims related to vaccines
  • An innovative real estate firm in litigation concerning tort and competition-based claims in New York Supreme Court, Commercial Division
  • Signify Health in a dispute involving tortious interference and trade-secret misappropriation claims
  • Livent in securities litigation arising out of its IPO
  • Underwriter defendants in securities litigations arising from the IPOs of various companies
  • Verisk and Xactware in contempt proceedings arising out of prior patent litigation
  • Underwriter defendants in two different securities litigations concerning California wildfires and major utility companies
  • A major financial institution in antitrust litigation concerning alleged manipulation of the Canadian Dealer Offered Rate
  • Aetna and its board of directors in:
    • Various securities and shareholder litigation arising from the Aetna-CVS merger, and the proposed acquisitions of Humana and Coventry Health Care
    • Securities and shareholder litigation relating to Aetna’s withdrawal from certain public healthcare exchanges
    • Securities litigation concerning disclosure of political contributions
  • Roche Diagnostics in a contract dispute in Delaware Chancery Court
  • Comcast and affiliates in:
    • Bankruptcy proceedings and related litigation concerning Comcast SportsNet Houston
    • Patent infringement litigation brought by Rovi and Veveo
    • Class action antitrust litigation as trial counsel
  • An affiliate of Universal Parks and Resorts in a real estate dispute
  • Sterling Equities and the owners of the New York Mets in the Madoff liquidation
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Benchmark Litigation – United States and New York, Star

Chambers USA – Litigation: Securities, New York

Crain’s New York Business – “Notable Women in Law,” 2021

Law360 – “Rising Star: Securities,” 2014

Lawdragon – 500 Leading Lawyers in America, 2021

Legal Momentum – The Women’s Legal Defense and Education Fund, “Next Generation Leader,” 2021

J.D., Georgetown University Law Center
  • cum laude
  • Notes Editor, Georgetown Law Journal
B.A., Public Policy Studies, Duke University
  • magna cum laude
Law Clerk, Hon. Carol Bagley Amon, U.S. District Court, E.D. New York, 2002-2003
Professional history
  • Davis Polk since 2003
Qualifications and admissions
  • State of New York
  • U.S. Court of Appeals, Federal Circuit
  • U.S. Court of Appeals, Fifth Circuit
  • U.S. Court of Appeals, Second Circuit
  • U.S. Court of Appeals, Sixth Circuit
  • U.S. Court of Appeals, Third Circuit
  • U.S. District Court, Colorado
  • U.S. District Court, E.D. New York
  • U.S. District Court, S.D. New York
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