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Paul W. Ryan

Founding Partner

Paul is a tireless advocate who provides clients with sophisticated and results-oriented counsel. To every client matter, he brings decades of experience as a Securities and Exchange Commission (SEC) enforcement lawyer and as a defense lawyer with significant expertise representing individuals, corporations, and trading firms in criminal, government enforcement, and civil matters. He has represented dozens of clients accused of insider trading and defeated the SEC in a high-profile insider trading trial. In its coverage of that case, the New York Times noted that the win on appeal “marked a rare loss” for the SEC. Media outlets like CNBC frequently call on Paul to discuss breaking legal developments.

As an SEC Senior Counsel, Paul conducted dozens of investigations, including numerous parallel investigations with prosecutors from the U.S. Attorney’s Offices for the Southern and Eastern Districts of New York. He served as the lead attorney in matters involving complex securities fraud, accounting fraud, insider trading, fraudulent securities offerings, mutual fund market-timing, late trading, and non-compliance with disclosure rules.

Before co-founding Serpe Ryan LLP, Paul served as in-house counsel at Pfizer where he advised the marketing teams for global commercial products. Prior to his tenure at the SEC, Paul also worked in the litigation departments of two of New York’s top law firms and served as a law clerk for the Honorable I. Leo Glasser in the United States District Court for the Eastern District of New York.


  • New York Metro Super Lawyer since 2015
  • Two-time recipient of the SEC Director’s award for Outstanding Contribution to Enforcement

Professional Associations

  • The New York State Bar Association’s Committee on White Collar Criminal Litigation
  • Federal Bar Council
  • New York City Bar Association

Publications and Lectures

  • Contributing Author: SEC Compliance and Enforcement Answer Book
  • Presenter: Recent Developments in Insider Trading Law (2016)
  • Presenter: SEC Administrative Proceedings: Winning on the SEC’s Home Court (2016)


  • J.D., New York University School of Law, cum laude, Staff Editor for the New York University Law Review
  • B.A., Georgetown University, cum laude


  • The Honorable I. Leo Glasser, United States District Court, E.D.N.Y.


  • New York
  • U.S. District Court for the Southern District of New York
  • U.S. District Court for the Eastern District of New York
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Paul W. Ryan


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