Mark S. Arisohn focuses his practice on securities class action litigation.

For the past 33 years, Mr. Arisohn specialized in complex criminal and civil litigation with an emphasis on white collar criminal matters. He has appeared in the state and federal courts nationwide, and appeared before the United States Supreme Court in the landmark insider trading case of Chiarella v. United States.

Mr. Arisohn brings his extensive trial experience to the prosecution of securities class actions. He has defended individuals and corporations accused of bank fraud, mail and wire fraud, securities fraud and RICO violations. He has represented public officials, individuals and companies in the construction and securities industries as well as professionals accused of regulatory offenses and professional misconduct. He also has appeared as trial counsel for both plaintiffs and defendants in civil fraud matters and corporate and business commercial matters, including shareholder litigation, breach of contract claims, and cases involving such business torts as unfair competition and misappropriation of trade secrets.

A prominent trial lawyer, Mr. Arisohn has also authored numerous articles including "Electronic Eavesdropping," New York Criminal Practice, LEXIS - Matthew Bender, 2005; "Criminal Evidence," New York Criminal Practice, Matthew Bender, 1986; and "Evidence," New York Criminal Practice, Matthew Bender, 1987. He was a contributing author of Business Crime, Matthew Bender, 1981.

Mr. Arisohn is an active member of the Association of the Bar of the City of New York and has served on its Judiciary Committee, the Committee on Criminal Courts, Law and Procedure, the Committee on Superior Courts and the Committee on Professional Discipline. He serves as a mediator for the Complaint Mediation Panel of the Association of the Bar of the City of New York and as a hearing examiner for the New York State Commission on Judicial Conduct.

He earned his B.S. and M.S. degrees from Cornell University in 1968 and 1969 and received his J.D. from Columbia University School of Law in 1972.

Mr. Arisohn is admitted to practice in New York and the District of Columbia as well as the following federal courts: the United States Supreme Court; the United States Court of Appeals for the Second Circuit; and the United States District Courts for the Southern, Eastern and Northern Districts of New York; the Northern District of Texas; and the Northern District of California.