Katherine Mackey

Katherine V. Mackey

Katherine Mackey

Katherine V. Mackey

Senior Associate

Katherine V. Mackey focuses her practice on complex litigation matters, including commercial litigation, internal investigations, and appeals. She has represented a variety of companies, including a major automotive manufacturer, a financial services company, and an electronics company.

Prior to joining the firm, Ms. Mackey served as a law clerk for the Honorable John M. Walker, Jr., of the US Court of Appeals for the Second Circuit and was an associate at a New York law firm. While in law school, Ms. Mackey was an intern at the US Attorney's Office for the District of Massachusetts in the Anti-Terrorism Unit.


  • “Reforming 'The Blob': Why California's Latest Approach to Amending CEQA Is a Bad Idea,“ 39 Colum. J. Envtl. L. 357 (2014).

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  • Education

    • JD, Columbia Law School, 2014

      Executive Editor, Columbia Journal of Environmental Law

    • MA, Human Rights, University College London, 2011

    • BA, Classics, Harvard University, 2007

      cum laude

  • Admissions

    • Massachusetts

    • New York

  • Clerkships

    • The Hon. John M. Walker, Jr., US Court of Appeals for the Second Circuit, 2015 - 2016