John Galligan

Cozen O'Connor PC

$ $$$

Broadway 45
New York 10006 NY US

John B. Galligan is head of the New York subrogation group. He litigates a variety of civil cases in state and federal court while focusing his practice in the areas of catastrophic property damage claims, products liability and commercial litigation. John is an experienced trial attorney who has also successfully represented clients before the New York Supreme Court Appellate Division, Second Judicial Department.

He has handled a number of high profile and significant matters against manufacturers, governmental entities and utilities. John is currently representing a number of subrogating carriers as a member of the plaintiffs’ steering committee in multi-million dollar litigation arising out of a 2007 steam pipe explosion in New York City.

He is also representing multiple subrogation clients related to claims arising out of a tragic gas explosion in Harlem on March 12, 2014 and an extensive water main rupture in the Greenwich Village section of New York City on January 15, 2014.

John has written articles and lectured to clients and organizations addressing a wide range of subrogation and litigation topics. He has also worked on a number of pro bono matters, including procurement of reparations for Holocaust survivors and the handling of uncontested divorces.

John received his Bachelor of Arts from American University. He earned his law degree, summa cum laude, at American University’s Washington College of Law, where he was a member of the American University Law Review.

During his third year in law school, John worked for the United States Attorney’s Office for the District of Columbia where he wrote appellate briefs and argued before the District of Columbia Court of Appeals.


  • American University, Washington College of Law, J.D., summa cum laude, 1996
  • American University, B.A., 1992



  • U.S. District Court — Eastern District of New York
  • U.S. District Court — Northern District of New York
  • U.S. District Court — Southern District of New York


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Broadway 45
New York 10006 NY US
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Lina Stillman

Broadway 42
New York 10006 NY US