Mr. Dunne is a member of Davis Polk & Wardwell’s Litigation Department and the firm’s Management Committee. He represents clients in a wide variety of criminal, civil and regulatory matters, including grand jury inquiries, internal investigations, enforcement actions by state and federal agencies, and complex commercial disputes. Most of the cases that he handles involve “parallel proceedings”: competing actions and investigations that must be defended simultaneously in multiple forums. His white collar criminal and regulatory matters have involved allegations of securities fraud, insider trading, foreign corrupt practices, money laundering and other financial crimes. He also has extensive experience advising companies, boards and audit committees on compliance and corporate governance issues.

Mr. Dunne’s current assignments include representing a major European bank in an international investigation of Iranian sanctions violations, a hedge fund in the New York Attorney General’s inquiry into “pay to play” practices at the State Comptroller’s office; and a Wall Street investment bank in connection with the subprime crisis. His recent FCPA matters have included assignments in Pakistan, Indonesia and the Dominican Republic.

Mr. Dunne also represented Marsh & McLennan in connection with the investigations of potential conflicts in the insurance industry, as well as the $850 million settlement reached with New York Attorney General Eliot Spitzer and the New York State Insurance Department. He represented Credit Suisse First Boston in the multiple investigations of “analyst independence” conducted by the SEC, the Department of Justice, the New York Stock Exchange, the NASD and the fifty state securities regulators, and in connection with the obstruction of justice trials of former banker Frank Quattrone. He represented ImClone in the criminal, Congressional and regulatory investigations of alleged insider trading by Samuel Waksal and Martha Stewart, and a senior executive of WorldCom in the Justice Department’s investigation of accounting fraud at that company.

Last year, Mr. Dunne obtained a jury verdict of acquittal in the murder trial of his pro bono client Lonnie Jones, clearing him of all charges and securing his release from prison, where he had been wrongly held for more than five years.

Mr. Dunne joined Davis Polk in 1987 and became a partner in 1993. He graduated from Oberlin College in 1980 and in 1984 received his J.D. from Harvard Law School. He was a prosecutor in the Manhattan District Attorney’s office from 1984 to 1987.

He is a member of the New York City Bar, where he is chair of the Judiciary Committee, and where he has also served as Vice President and member of the Executive Committee. He is also chair of Chief Judge Judith Kaye’s Special Commission on the Future of the New York State Courts. He served on Chief Judge Kaye’s Commission on the Future of Indigent Defense Services, and was chief counsel to the New York State Commission on Drugs and the Courts. He is a director of the National Center for Law and Economic Justice, and has been a trustee of the Federal Bar Council and a director of the Fund for Modern Courts, where he chaired the Fund’s Task Force on Judicial Selection. He has also served as a director of the Legal Aid Society, where he sat on the board’s Executive Committee. In 2008, he was presented by the Fund for Modern Courts with the John J. McCloy Award for outstanding contributions to the administration of justice in New York State.

Mr. Dunne is listed as a leading lawyer in Chambers USA: America’s Leading Lawyers for Business, American Lawyer Media’s Corporate Counsel: Best Lawyers Annual Guide to Criminal Defense Law, and several other legal industry publications.