Stephen T. Heiser


Stephen Heiser is Counsel to Moses Ziegelman Richards & Notaro, LLP. Stephen’s practice is primarily focused on complex commercial litigation, securities-related litigation and governmental investigations. He has extensive experience in all phases of civil litigation, and he has represented numerous companies and individuals in connection with grand jury investigations, SEC enforcement actions and other matters brought by state and federal regulators. He has represented clients in a variety of other areas including transactional and corporate law, international trust disputes, employment law and matrimonial law.

Stephen’s notable representations include:

  • representing a client in a multi-billion dollar family and trust dispute with proceedings in the United States and Bermuda
  • obtaining dismissal of a breach of contract and fraud claim against a publicly traded investment bank
  • representing a multi-billion dollar hedge fund in a series of state and federal investigations and related litigations
  • defending a country and its head of state in a breach of contract lawsuit filed in California
  • representing the portfolio manager of a hedge fund in connection with an SEC enforcement action and related litigations
  • obtaining a favorable settlement on behalf of a publicly traded gold mining company in litigation with a New York-based hedge fund
  • representing a hedge fund in a securities fraud lawsuit against several leading private equity firms and international telecommunications companies
  • representing a well-known media personality in connection with divorce proceedings

Outside the office Stephen is a musician and songwriter, he enjoys outdoor sports including softball and biking and he has attended games at 33 major league baseball stadiums (and counting), mostly with his father William.


State of New York
State of California
United States District Court for the Southern District of New York
United States District Court for the Eastern District of New York


American Bar Association
New York State Bar Association


Northwestern University School of Law (J.D. 2003)
George Washington University (B.A. 1999)