One of three prosecutions
United States v. Mangione
United States v. Mangione is the federal prosecution of Luigi Mangione over the December 2024 killing of UnitedHealthcare chief executive Brian Thompson in Manhattan. Mangione pleaded guilty before Judge Margaret M. Garnett on August 14, 2026 to the two federal counts that remained after a January ruling. Sentencing is scheduled for December 18, 2026 at 11:00 a.m.
Case at a glance
On August 14, 2026, Mangione pleaded guilty to one count of interstate stalking resulting in death and one count of cyberstalking through use of interstate facilities resulting in death. The U.S. Attorney's Office says each count carries a maximum potential sentence of life in prison.
The docket sets sentencing for December 18 at 11:00 a.m., with the defense sentencing submission due December 4 and the government's due December 11. The court ordered a presentence investigation and report, required defense counsel to be present for any presentence interview, and continued detention.
In two opinions issued January 30, 2026, the court dismissed the two counts that had carried death-penalty eligibility, holding that stalking is not a "crime of violence" under the statute, and declined to suppress the backpack evidence from the Altoona arrest.
The government told the court on February 27, 2026 that it would not appeal the dismissal, and a March 3 order noted the case was no longer capital. The federal trial dates set in June were superseded by the guilty pleas.
The federal counts as charged in December 2024, the rulings that narrowed them, and the August 2026 guilty pleas.
Interstate stalking resulting in death; cyberstalking through use of interstate facilities resulting in death
Mangione pleaded guilty to both remaining federal counts on August 14, 2026. The U.S. Attorney's Office says each count carries a maximum potential sentence of life in prison.
Guilty plea entered · August 14, 2026
Murder through use of a firearm, and a related firearms count
Dismissed by the court's January 30, 2026 opinion, which held that stalking is not a "crime of violence" under the statute. These were the counts that had made the case eligible for the death penalty (per the April 1, 2025 directive).
Dismissed by court order · January 30, 2026
Stalking and firearm-related allegations
The original federal complaint allegations, as announced by the U.S. Attorney in December 2024.
As originally filed · December 19, 2024
Dates on the federal docket, listed with the order that set each one.
The main federal records, from the charging complaint to the January 2026 opinions, June scheduling order, and August 2026 guilty-plea announcement. Each entry links to its cited source.
A charging document that begins a criminal case by stating the alleged offenses; in many courts it precedes an indictment.
A court's written explanation of its reasoning and its ruling on an issue.
A request to exclude certain evidence from trial, and the court's decision on it.
An order setting deadlines or dates for the steps in a case.
A written directive issued by a judge.
An official public statement from a prosecutor's or agency's office announcing an action in the case (a press release, not a court filing).
The federal records on this page come from these sources.
Charging records and the August 14, 2026 guilty-plea announcement published by the U.S. Attorney's Office for the Southern District of New York.
Opinions and orders published by the federal court itself.
Federal Bureau of Prisons inmate locator
Official federal inmate locator for register-number and custody-location information.
CourtListener federal docket · unofficial
A free public copy of the federal docket, including the August 14, 2026 change-of-plea minutes, presentence-report referral, and sentencing schedule. Useful for browsing; the court of record is the SDNY itself.
Defense team's document site · unofficial
Maintained by Mangione's defense team. A useful document index, labeled unofficial here because it is published by a party to the case; it hosts the signed August 17 order setting the dismissal-motion briefing schedule and December 10 court date.
News reports · unofficial
Used when a courtroom development is public but no document is posted online. Most common in the New York case, whose courts do not maintain an open filing docket.