Mary P. Hansen


  • Mary P. Hansen
  • Phone: +1 215 979 1110
    Fax: +1 215 689 2731

    Import to Address Book

  • Duane Morris LLP
    30 South 17th Street
    Philadelphia, PA 19103-4196

Mary P. Hansen defends clients in connection with investigations and litigation involving state and federal financial regulatory agencies, including the SEC, the Commodity Futures Trading Commission (CFTC), the Financial Industry Regulatory Authority (FINRA), the National Futures Association (NFA) and the Department of Justice (DOJ). Ms. Hansen  counsels investment advisers, broker-dealers, financial services industry clients, and public and private companies in federal and state regulatory investigations and leads internal corporate investigations involving potential violations of federal securities law and other executive or employee misconduct. She also counsels clients with respect to compliance policies, procedures and strategies.

Ms. Hansen previously served as supervisor in the U.S. Securities and Exchange Commission’s (SEC) Division of Enforcement. Prior to entering private practice, she served as law clerk to the Hon. Raymond J. Dearie of the U.S. District Court for the Eastern District of New York.

Ms. Hansen is a 1998 magna cum laude graduate of St. John’s University School of Law, where she was a member of the American Bankruptcy Institute Law Review, and a graduate of the State University of New York at Albany.

Areas of Practice

  • White-Collar Criminal Defense and Investigations

  • Securities Litigation

  • Regulatory Investigations

  • Internal Corporate Investigations

  • Broker-Dealers


  • Pennsylvania
  • New Jersey
  • New York


  • St. John's University School of Law, J.D., magna cum laude, 1998
    - Staff Member, American Bankruptcy Institute Law Review
  • State University of New York at Albany, B.A., 1986


  • Duane Morris LLP
    - Partner, 2020-present
  • Faegre Drinker Biddle & Reath LLP
    - Partner, 2013-2020
  • U.S. Securities & Exchange Commission
    - Assistant Director, 2010-2013
    - Branch Chief, 2007-2010
    - Senior Counsel/Staff Attorney, 2004-2007
  • Dechert LLP
    - Associate, 2001-2004
  • Milbank Tweed Hadley & McCloy LLP
    - Associate, 2000-2001
  • Morvillo Abramowitz Grand Jason & Silberberg PC
    - Associate, 1999-2000
  • U.S. District Court for the Eastern District of New York
    - Law Clerk to the Hon. Raymond J. Dearie, 1998-1999
  • Prudential Securities
    - Associate Vice President, 1993-1995
    - Assistant Vice President, Assistant to Regional Manager, 1991-1993
    - Operations Manager, 1989-1991
    - Internal Auditor, 1986-1989

Professional Activities

  • Irish American Business Chamber & Network
    - Membership Committee
  • Women’s White Collar Defense Association
    - Sponsorship Committee

Honors and Awards

  • Philadelphia Business Journal Best of the Bar Award, 2018

  • National Law Review Go-To Thought Leader, December 2019

  • Top Irish Legal 100, October 2019

Civic and Charitable Activities

  • St. Baldrick’s Foundation
    - Council of Counsels