Mark K. Kessler is of counsel to the firm and practices in the areas of corporate law, securities and investment companies. Mr. Kessler also currently serves as Vice President and Senior Counsel to Toll Brothers, Inc., a national homebuilder, having served as its outside counsel since formation and, in recent years, at its General Counsel.

Mr. Kesslerís areas of practice include public and private financing; corporate governance; investment companies; and mergers and acquisitions. He has been cited in The Best Lawyers in America, the Top 100 Lawyers of Pennsylvania and Chambers USA. He has been named by the National Law Journal as a leading figure in the national securities bar, and has been a frequent lecturer and author of articles on corporate and securities law and legal ethics.

Mr. Kessler is a graduate of the University of Pennsylvania Law School and Brown University. After military service, he clerked for a Justice of the Pennsylvania Supreme Court and served as an Assistant to a Commissioner of the U.S. Securities and Exchange Commission.

Areas of Practice

  • Corporate Law
  • Securities Law
  • Investment Companies
  • Mergers and Acquisitions
  • Public and Private Financing
  • Corporate Governance


  • Pennsylvania
  • Supreme Court of Pennsylvania
  • Supreme Court of the United States


  • University of Pennsylvania Law School, J.D.
  • Brown University, B.A.


  • Duane Morris LLP
    - Of Counsel, 2012-present
  • Toll Brothers, Inc.
    - Vice President and Senior Counsel, 2012-present
    - Senior Vice President, General Counsel and Chief Compliance Officer, 2007-2012
  • WolfBlock LLP
    - Partner, 1985-2007
    - Chair, Corporate Department

Professional Activities

  • Philadelphia Bar Association
    - Section of Business Law, Former Chair
    - Committee on Securities Regulation, Former Chair
  • American Law Institute

Honors and Awards

  • Recipient of Dennis H. Replansky Memorial Award from the Pennsylvania Bar Associationís Section on Business Law, 2007
  • AV Preeminent® Peer Review Rated by Martindale-Hubbell®

Civic and Charitable Activities

  • Big Brothers Big Sisters of America
    - Former President and member of the Board of Directors
    - Recipient of the Charles G. Berwind Lifetime Achievement Award
  • Arcadia University
    - Board of Trustees
  • Albert Einstein Medical Center
    - Former Board Member
  • Federation of Jewish Agencies of Greater Philadelphia
    - Former Board Member
  • Society Hill Civic Association
    - Former Board Member
  • Jewish Family Service of Philadelphia
    - Former President and Board Member