John Clarke represents clients in complex litigation and internal investigations involving financial institutions, securities and financial instruments, structured transactions, accounting issues and corporate governance disputes.

He also represents clients in a variety of litigation matters involving the antitrust and bankruptcy laws. He has significant experience in litigation involving failed bank receiverships and holding company bankruptcy cases. He is a frequent speaker and writer on issues involving financial institutions, corporate governance and the federal securities laws. He is the current chairman of the Banking Law Committee of the Association of the Bar of the City of New York.