American Watcher Institute
Marc Agnifilo

Marc Agnifilo

Partner · Agnifilo Intrater LLP

Marc Agnifilo is a New York criminal defense attorney representing Luigi Mangione. A former state and federal prosecutor, he practices at Agnifilo Intrater LLP.

Defense Attorney

Positions

  • ?–present

  • Defense counsel — Luigi Mangione

    NY state and federal SDNY cases

    ?–present

Media

  • Marc Agnifilo
    Editor-provided

Cases

As party

  • People v. Mangione (NY) — New York State prosecution of Luigi Mangione over the December 4, 2024 shooting of Brian Thompson. On September 16, 2025, Justice Gregory Carro dismissed the two terrorism counts — including the lone first-degree murder charge — as legally insufficient; second-degree murder is now the top of nine remaining counts. Trial set for September 8, 2026 before Justice Carro.
  • US v. Mangione (SDNY) — Federal prosecution of Luigi Mangione in the Southern District of New York on charges of interstate stalking, electronic-communications stalking, murder through use of a firearm with a silencer, and a related firearms offense, arising from the December 4, 2024 shooting of UnitedHealthcare CEO Brian Thompson. Jury selection / trial set for October 13, 2026.

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