Mark S. Arisohn, a trial lawyer since 1973, concentrates his practice on prosecuting complex securities fraud cases on behalf of institutional investors. 

For the past 37 years, Mr. Arisohn's extensive trial experience in jury and non-jury matters has been 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.

Most recently, Mr. Arisohn 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 the federal court in Miami, the jury found BankAtlantic and its two senior officers liable for securities fraud because they intentionally lied about and failed to disclose the extent of the bank's lending risk. This was only the 10th 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. Following the trial, The AmLaw Litigation Daily named Mr. Arisohn "Litigator of the Week." On April 25, 2011, Judge Ungaro vacated the jury's verdict. Lead Counsel is looking forward to a favorable review of the issues by the appellate court.

Mr. Arisohn's areas of practice have been wide-ranging, including 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 business commercial matters, including shareholder litigation, business torts, 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 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.

Mr. Arisohn has received a rating of AV from the publishers of the Martindale-Hubbell directory.