David K. Momborquette - McDermott Will & Emery


David K. Momborquette focuses his practice on complex commercial litigation, regulatory matters and internal investigations, primarily for clients in the financial services industry, including hedge funds, private equity funds, venture capital funds and interdealer brokers. He has extensive experience representing entities and individuals in both private securities litigation and securities regulatory and other related matters, including investigations by the Securities and Exchange Commission, Financial Industry Regulatory Authority, US Attorneys’ offices, New York Stock Exchange, state attorneys general offices and state securities regulators.

David also has litigated numerous cases in federal and state courts throughout the United States and before arbitration panels from the commencement of claims through trials and appeals in matters involving allegations of insider trading, violations of the federal securities laws, market manipulation, breach of fiduciary duty, common law fraud, employee raiding, trademark violations, misappropriation of trade secrets and other business torts.

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  • Represented a chairman in securities class action, two separate private actions, as well as certain government inquiries and companies’ bankruptcy all arising out of accounting irregularities at the company*
  • Represented a limited partnership and certain individuals in securities class actions arising from roll-up of real estate limited partnerships*
  • Represented a major interdealer brokerage firm in various arbitrations and civil litigations arising out of a global corporate raid by a competitor, including a four-and-a-half month jury trial*

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  • American Bar Association, member
  • New York City Bar Association, member


Boston University School of Law, JD, 1990
Boston University, College of Liberal Arts, BA, 1986

New York

Courts / Agencies
US Court of Appeals for the Second Circuit
US District Court for the Southern District of New York
US District Court for the Eastern District of New York