Mark S. Arisohn

Partner

Overview

Mark S. Arisohn concentrates his practice on prosecuting complex securities fraud cases on behalf of institutional investors. Mark is an accomplished litigator, with nearly 40 years of extensive trial experience in jury and non-jury matters in the state and federal courts nationwide. He has also argued in the New York Court of Appeals, the United States Court of Appeals for the Second Circuit and appeared before the United States Supreme Court in the landmark insider trading case of Chiarella v. United States.

Mark's wide-ranging practice has included prosecuting and defending individuals and corporations in cases involving securities fraud, mail and wire fraud, bank 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 commercial matters, including shareholder litigation, business torts, unfair competition and misappropriation of trade secrets. 

Most recently, Mark was lead trial counsel in a securities class action against BankAtlantic Bancorp, Inc. and several of its highest officers. After a four-week trial in federal court, the jury found BankAtlantic and its two senior officers liable for securities fraud. This was only the tenth securities fraud class action to go to trial since passage of the Private Securities Litigation Reform Act in 1995 and is the first securities class action case arising out of the financial crisis to go to jury verdict. Litigation on aspects of the case is ongoing before the Eleventh Circuit Court of Appeals.

During his impressive career as a trial lawyer, Mark 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. 

Mark 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 where he mediates attorney client disputes and as a hearing officer for the New York State Commission on Judicial Conduct where he presides over misconduct cases brought against judges. 

Recently, Mark was named to the recommended list in the field of Securities Litigation by The Legal 500 and recognized by Benchmark Plaintiff as a Local Securities Litigation Star. He has also received a rating of AV Preeminent from publishers of the Martindale-Hubbell directory.