Christopher Viapiano

Christopher Viapiano is a partner in Sullivan & Cromwell’s Litigation Group, Co-Head of the Firm’s Securities Litigation Practice and a member of the Criminal Defense & Investigations Group. Mr. Viapiano represents financial institutions and other leading companies in securities and shareholder derivative litigation, antitrust and commodities litigation, books and records demands and litigation, criminal and regulatory enforcement matters, and corporate internal investigations. He has represented clients under investigation by the Department of Justice, the Securities and Exchange Commission, the Commodity Futures Trading Commission, the Consumer Financial Protection Bureau, the Office of the Comptroller of the Currency, the Federal Reserve, and state attorneys general. Mr. Viapiano clerked for the Honorable Donald F. Parsons, Jr. of the Delaware Court of Chancery (2005-2006).

Mr. Viapiano is recognized by Chambers USA in District of Columbia Securities Litigation and District of Columbia White-Collar Crime & Government Investigations Litigation and has been named a “Top 500 Leading Litigator in America” by Lawdragon. He was also named a Client Service All-Star by BTI in 2019 and 2022.