Our People

Brent S. Tantillo

Washington D.C.
(786) 506.2991


State Bar of Washington D.C.
United States Court of Appeals for the District of Columbia


General Corporate & Commercial
Real Estate
Family Office & Multi-Family Office Practice
False Claims Act/Qui Tam Whistleblower
Investigation, White Collar and Fraud


Internet Crimes Against Children- Attorney General, Eric Holder
U.S. Attorney’s Office Team Award- Exceptional Performance

Professional Land Management, University of Houston


J.D., University of Houston Law Center

B.B.A., Finance, The University of Texas at Austin




Brent S. Tantillo is a partner in the Washington D.C. office. Mr. Tantillo focuses his practice on Business Law & Commercial Litigation, White Collar Criminal Defense, Whistleblower Representation, including qui tam actions, and Real Estate Law Litigation. 

For the past several years, Mr. Tantillo has guided companies and individuals through "bet the firm," high-stakes litigations mostly in federal court. He also has extensive experience assisting hedge funds, family offices, real estate investment trusts and small and medium-sized companies with all aspects of their corporate needs from incorporation to compliance to litigation. As a former federal prosecutor, Mr. Tantillo also has extensive experience handling disputes relating to health care fraud, money laundering, the Bank Secrecy Act, RICO, and the False Claims Act. He also provides clients with risk management and compliance advice.

Prior to joining CKR, Mr. Tantillo was the Managing Shareholder of Tantillo Law, PLLC located in New York City and Washington, DC, an internationally recognized full-service litigation law firm. Mr. Tantillo guided his clients through high-stakes lawsuits, often involving government and internal investigations, whistleblower actions, and other federal regulatory matters.

Mr. Tantillo spent 10 years at the United States Department of Justice, serving as an Assistant United States Attorney in the Southern District of Florida from 2006 to 2016. He led the Southern District of Florida's Human Trafficking Task Force from 2006 to 2010, where he coordinated the efforts of more than 40 non-governmental organizations and law enforcement agencies in rooting out human slavery. Mr. Tantillo also prosecuted cases involving public corruption, organized crime, and drug and sex trafficking.

Mr. Tantillo also served as Counsel & Legislative Assistant in the United States House of Representatives from 2005 to 2006, where he drafted legislation on tax, banking, energy, environmental, and judiciary issues. Previously, Mr. Tantillo served as Deputy Director of the Projects for Civil Justice Reform and International Religious Liberty at Hudson Institute, where he directed a national effort to revise rules of professional conduct to prevent attorneys from overcharging their clients and to ensure the enforcement of existing fiduciary standards. He also has played a key role in the drafting of three landmark pieces of legislation of international import: The North Korean Freedom Act, ADVANCE Democracy Act, and the Trafficking Victims Protection Reauthorization Act.