Mary K. Marks
  1. Counsel

Ms. Marks is counsel in Davis Polk’s Litigation Department. Her practice focuses on analyzing U.S. and multinational transactions and obtaining clearance under the Hart-Scott-Rodino Act and global merger control laws. She also counsels clients with respect to inadvertent failures to file under the HSR Act.

Of Note

  • Vice-Chair, Antitrust Section, M&A Committee, American Bar Association, 2013-present
  • Executive Committee Member, Section of Antitrust Law, New York State Bar Association, 2011-present
  • Appointed to serve on the Antitrust and Trade Regulation Committee, New York City Bar Association, 2016-2019
  • Moderator, "From Algeria to Zimbabwe: Competition in Africa," ABA Spring Meeting, April 8, 2016
  • Co-Author, U.S. Chapter, Getting the Deal Through – Merger Control, 2016, 2017 and 2018 editions
  • Panelist, “Integration Planning Today: In Bounds, Out of Bounds, and Close Calls,” ABA Seminar, February 23, 2015
  • Moderator, “Efficiencies, the Cheshire Cat of Merger Analysis,” NYSBA Annual Meeting, January 29, 2015
  • Moderator, “Navigating State and Federal Regulators During Your Merger,” NYSBA Annual Meeting, January 30, 2014
  • Panelist, “Antitrust Challenges in Hospital Mergers,” Strafford Webinar, October 2, 2012
  • Panelist, “HSR: 2011 Amendments to the Rules, Forms and Instructions,” Strafford Webinar, September 20, 2011
  • Author, “Premerger Reporting in Non-Merger Scenarios,” Law360, March 22, 2012

Professional History

  • Counsel, Davis Polk, 2015-present
  • Counsel, Greenberg Traurig, 2011-2015
  • Special Counsel, HSR and Merger Control, Schulte Roth & Zabel, 2004-2011
  • Associate, Schulte Roth & Zabel, 1995-2004
  • Associate, Pryor, Cashman, Sherman & Flynn, 1993-1995

Bar Admissions

  • State of New York


  • B.B.A., Accounting and Philosophy, University of Notre Dame, 1990
    • magna cum laude
  • J.D., Georgetown University Law Center, 1993
    • Dean's List
    • Member, Georgetown Journal of Legal Ethics