Dennis M. Walsh

Senior Managing Director

Dennis M. Walsh is an experienced litigator and former prosecutor with deep experience in monitoring and compliance matters as well as complex investigations. 

Previously, Mr. Walsh practiced law at large New York City firms, as well as his own, handling a range of commercial litigation, criminal defense, investigations, monitoring and compliance review cases.  Among other matters, he was retained to assist in monitoring international corporations in the automotive, energy, financial and technology sectors. He has had extensive interaction with in-house counsel and compliance officers and has written detailed reports presented to regulators, courts and the Department of Justice. His cases have involved a range of issues involving contracts, product liability and negligence, competitive intelligence, securities, natural gas and oil trading regulations, banking regulations and compliance, construction, labor, and criminal issues. He also conducted an extensive multi-city investigation of Medicare billing practices on behalf of a national hospital corporation.

Mr. Walsh served as the Review Officer in United States v. District Council of Carpenters in the Southern District of New York. He was responsible for enforcing a Consent Decree and other orders of the District Court in a long-standing civil RICO matter, and was given broad authority to monitor, investigate and reform the administration and governance of the New York City District Council of Carpenters, its Taft-Hartley Benefit Funds (with a combined value of $5 billion) and its eight affiliated local unions, with more than 20,000 members. He filed nine lengthy reports with the District Court and his efforts have been the subject of articles in The New York Times, New York Daily News, the New York Post and Crain’s.

Mr. Walsh was a member of the Guidepost monitoring team that worked to ensure that the New York City Housing Authority complied with a federal agreement to correct chronically poor housing conditions, and was in charge of the monitor’s lead-based paint and mold mitigation and remediation work streams, among other oversight responsibilities. He also led a team investigating the trademark infringement of non-fungible tokens for a major internet-based media company.

Mr. Walsh served as an Assistant Deputy Attorney General with the New York State Attorney General’s Organized Crime Task Force, where he investigated La Cosa Nostra racketeering involving labor unions. He worked closely with many law enforcement agencies, including the New York Police Department, the FBI and the United States Department of Labor’s Office of the Inspector General. He also served as a Special Assistant United States Attorney in both the Southern and Eastern Districts of New York.

Mr. Walsh received the Louis J. Lefkowitz Memorial Award for outstanding performance on behalf of the Office of the New York Attorney General and people of the State of New York.


  • State of New York Admissions
  • Southern and Eastern Districts of New York Admissions


  • Juris Doctor, The Benjamin N. Cardozo School of Law
  • Baccalaureatus Artium, Fairfield University


  • Federal Bar Council
  • New York State Bar Association

Media + Events

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April 23, 2019

Guidepost Solutions Welcomes Three Seasoned Compliance Professionals

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