David A. Koenigsberg

More About David A. Koenigsberg

David Koenigsberg is the False Claims Act practice leader at Menz Bonner Komar & Koenigsberg LLP and during his career has represented relator-whistleblowers and the United States in cases that have resulted in government recoveries of over a billion dollars. David has been practicing law for over 36 years and has been litigating False Claims Act cases for over 28 years, the last 20 years of which has been in private practice where he has focused his practice on representing relators in whistleblower litigation, including Federal False Claims Act litigation. 

During his career, David has recovered over one billion dollars ($1,000,000,000) in false claims acts cases in which he has represented whistleblowers and the United States and various state and local governments. As a partner at our firm, David has successfully represented relator-whistleblowers in cases that have resulted in government recoveries of over $960 million. Prior to entering private practice, David was the Chief of the Affirmative Civil Enforcement Unit of the United States Attorney’s Office for the Southern District of New York where he represented the United States in False Claims Act cases that resulted in government recoveries of over $200 million. 

Most recently, David secured a $330 million settlement in a first-of-its kind tax fraud whistleblower case against Sprint Communications, Inc. The $330 million recovery is not only the largest ever recovered by the New York Attorney General in an action filed under the New York False Claims Act, but is also the largest recovery ever by a single state in an action brought under a state false claims act. The firm’s client received a $62.7 million relator share from the settlement. Under both state and federal False Claims Act law, relators – the whistleblower who brings information to the government about the fraud on the government – is entitled to a share of the proceeds that the government recovers.