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John J. Zak

Partner, Securities Regulation & Corporate Compliance Practice Leader

John concentrates his practice in U.S. securities regulation and compliance, mergers and acquisitions, and corporate law and governance. He is active in the firm's U.S.-Canada Practice and regularly counsels Canadians on U.S. securities and corporate law matters. He has extensive experience in public and private securities offerings, including venture capital and private equity transactions and executive compensation arrangements. He also counsels a variety of privately held companies.

John is a co-author of the Practical Law Company module on New York business corporation law.


  • Listed, Best Lawyers in America (Corporate Law)
  • Buffalo Business First/Buffalo Law Journal's Legal Elite of Western New York 2014
  • 2013 Best Lawyers Buffalo Corporate Law “Lawyer of the Year”


Professional Associations

  • Rex Energy Corporation board of directors (Nasdaq: REXX)
  • New York State Bar Association Business Law Section Securities Law Subcommittee
  • American Bar Association Section on Corporation, Banking, and Business Law

Community & Pro Bono

  • Secretary and Executive Committee member, Shea's O'Connell Preservation Guild Ltd. board of trustees (Shea's Performing Arts Center)