Dennis F.Murphy Jr. (D.J.)


San Francisco + 1.415.875.5886

D.J. Murphy's practice focuses on complex commercial and class action litigation. He represents clients in state and federal courts and has defended a variety of clients in securities class actions, merger litigation, and unfair competition and consumer fraud matters. His experience also includes representing companies in high-stakes internal investigations and government enforcement proceedings before the Securities and Exchange Commission (SEC) and Department of Justice (DOJ).

D.J.'s experience extends to all aspects of litigation, including pleading attacks, discovery and related motion practice, class certification and summary judgment motions, and trial. He has represented clients in many industries, from automotive and consumer product to fintech and crypto. He also counsels clients on antitrust and products liability matters and has successfully negotiated withdrawals of notices of violation during prelitigation stages.

D.J. maintains an active pro bono practice, including representing clients in asylum proceedings and veterans seeking relief before the Army Discharge Review Board.

D.J. is a member of the Bar Association of San Francisco. Prior to joining Jones Day, he worked as a litigation associate for two international law firms.


  • HDR Global Trading obtains dismissal with prejudice in 33-count lawsuitJones Day client HDR Global Trading Limited ("HDR"), the Seychelles-incorporated owner and operator of the BitMEX cryptocurrency derivatives trading platform, obtained dismissal with prejudice of a 33-count lawsuit alleging violations of the Commodity Exchange Act, RICO, and various California statutory and common law claims.