David C. Mahaffey

David C. Mahaffey


Sullivan & Worcester LLP

Recognized since 2009

Washington, District of Columbia

Practice Areas

Mutual Funds Law

Securities Regulation

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David is the managing partner of the Washington, D.C. office, as well as the co-leader of the Investment Management Group. Prior to joining Sullivan & Worcester, David was Special Counsel in the Washington, D.C. office of Gibson, Dunn & Crutcher. He previously served as Assistant General Counsel for Legislation and Investment Company and Adviser Regulation at the Securities and Exchange Commission and as Counsel to SEC Commissioner Aulana Peters.

Contact & Links
Location
  • 1666 K Street, NW
    Washington, DC 20006
Education
  • Harvard University, J.D., graduated 1982
  • Princeton University, B.A., graduated 1979
Bar Admissions
  • District of Columbia, The District of Columbia Bar
Affiliations
  • Princeton University - Medieval Studies Advisory Council
Court Admissions
  • U.S. District Court, District of Columbia
  • U.S. Court of Appeals for the District of Columbia Circuit

Sullivan & Worcester LLP
Headquarters: Boston, Massachusetts

34 The Best Lawyers in America® awards

8 Best Lawyers: Ones to Watch® in America awards

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Recognized in The Best Lawyers in America® 2024 for work in:
  • Mutual Funds Law
  • Securities Regulation
Awards:
  • Chambers Global, Ranked in Investment Funds (2021-2023)

  • Chambers USA, Ranked in Investment Funds (Nationwide) (2015-2022)
  • The Legal 500 U.S. (2012-2022)
  • Best Lawyers in America® (2009-2023)

  • Washington, D.C. Super Lawyers, Securities/Corporate Finance (2014-2017)
  • Martindale-Hubbell featured AV® Peer Review Rated

Additional Areas of Practice:
  • Securities / Capital Markets Law

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Publications

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