Damien Marshall

Damien has extensive experience representing clients on a broad range of litigation and regulatory matters with particular emphasis on defending financial institutions and technology companies in class action and MDL proceedings.

Damien regularly practices before federal and state courts throughout the nation. His clients include large global financial institutions, as well as technology companies, Fintech companies, hedge funds and private equity funds.

Regardless of the client or forum, Damien focuses on achieving his client’s legal and business goals in an efficient and effective manner. Damien is recognized by The Legal500 for his general litigation practice. In addition to his dispute resolution practice, Damien provides risk analysis and advice to clients regarding potential exposures and risk mitigation strategies.


  • Defense of HSBC in a series of civil litigations and government investigations relating to its RMBS issuance business
  • The successful representation of American Express in its antitrust case against Visa and MasterCard, in which American Express recovered a record-breaking $4 billion
  • Successful defense of DraftKings in a class action challenging the use of the college athlete statistics in daily fantasy sports contests
  • Leading defense of DraftKings in MDL proceedings challenging the legality of daily fantasy sports
  • Leading defense of HSBC in MDL proceedings alleging antitrust and Commodity Exchange Act violations involving the precious metals markets
  • Leading defense of Ripple Labs in a federal securities class action alleging sale of an unregistered security


J.D., Georgetown University, magna cum laude, Order of the Coif
B.A., University of California-Los Angeles, magna cum laude

New York

Law Clerk, Hon. Rosemary Barkett, U.S. Court of Appeals for the Eleventh Circuit
Law Clerk, Hon. Donald M. Middlebrooks, U.S. District Court for the Southern District of Florida

Member, Georgetown University Law Alumni Board
Member, UCLA New York Regional Alumni Committee 

Recognized in Commercial Litigation by The Legal 500
Named to New York Metro Super Lawyers

March 3, 2022
Sequential Brands Consummates Sale of Assets in Chapter 11 Cases

October 6, 2022 • Source: The American Lawyer
The American Lawyer profiles King & Spalding’s success in building a preeminent global litigation practice and growing its New York presence

January 20, 2022 • Source: Law360 and Bloomberg Law
Damien Marshall and Leigh Nathanson advise DraftKings in a settlement


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