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About Nathaniel Z. Marmur

Nathaniel Z. Marmur focuses on federal and state criminal cases, complex civil litigation, and appeals. He handles criminal investigations and prosecutions, representing clients in matters involving charges of fraud, insider trading and other violations of the securities laws, Medicare/Medicaid and health care fraud,TARP fraud, criminal trademark counterfeiting, antitrust violations, money laundering, commercial and public bribery, customs violations, and tax evasion.


Mr. Marmur is known as one of New York's top appellate lawyers. He has successfully argued cases before the U.S. Court of Appeals for the Second Circuit, the New York Court of Appeals (the State's highest court), and the Appellate Division, First and Second Departments. He has personally argued six cases before the Court of Appeals, including People v. Kozlowski, billed as the largest grand larceny case in State history, and Taub v. Altman, which limited the geographic reach of the Manhattan District Attorney's Office in the prosecution of tax and fraud cases. He was the lead author of the amicus brief in Smith v. Tormey, in which the Court of Appeals strengthened the rights of court-appointed lawyers to recover fees. And in January 2015, Mr. Marmur won a unanimous decison from the Court of Appeals in Matter of 155 W. 21st Street v. McMullan, which reversed a sanctions decision against a Park Avenue law firm.  Mr. Marmur has also co-authored several other briefs before the Court of Appeals, including one on behalf of Governor Pataki in his successful battle against the Legislature over the Executive’s budget powers (Pataki v. New York State Assembly).


Mr. Marmur's appeals have had an important influence on the development of criminal law in this State. Two of his cases (Taub and People v. Kozlow) have exposed statutory flaws that prompted the legislature to amend its criminal statutes. Kozlow also resulted in a change in the official commentary to New York’s bail-pending-appeal provision that recognizes the validity of bail even if the defendant has received a probationary sentence.


Mr. Marmur's regulatory experience includes the representation of professionals, including doctors, lawyers, and accountants, in matters before the New York State Office of Professional Misconduct, the Departmental Disciplinary Committees, the New York State Department of Education, the Attorney General's Medicaid Fraud Control Unit, the SEC and the NASD, and numerous other state and municipal agencies. His civil litigation experience encompasses the representation of plaintiffs and defendants in cases involving breach of contract, business fraud, insurance coverage, RICO, defamation, conversion, the UCC, partnership disputes, and negligence. 


Following his graduation from law school, Mr. Marmur was a corporate finance associate at a large, international law firm.  He then spent 17 years at Stillman & Friedman, P.C., one of New York City's top white collar criminal boutiques.



Fordham University School of Law (J.D. 1994, cum laude)

Member, Order of the Coif

Colgate University (B.A. 1990)


Judicial Clerkships

Hon. Jerome Turner, U.S. District Court for the Western District of Tennessee, 1995-1996

Hon. Ellsworth Van Graafeiland, U.S. Court of Appeals for the Second Circuit, 1996-1997



Named to Super Lawyers, 2008-2020


Bar Admissions

New York

New Jersey

U.S. Court of Appeals for the Second Circuit

U.S. District Courts for the Southern and Eastern Districts of New York

U.S. District Court for the District of New Jersey

U.S. District Court for the Western District of Tennessee




(212) 257-4894


500 Fifth Ave 40th Floor

New York, NY 10110




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