'On the morning of Dec. 4, 2024, I shot Mr. Thompson': Luigi Mangione pleads guilty to federal stalking charges in UnitedHealthcare CEO's murder

Luigi Mangione has pleaded guilty in federal court to stalking charges related to the killing of UnitedHealthcare CEO Brian Thompson. The plea, entered on August 14, 2026, comes weeks before Mangione's state-level murder trial and could pave the way for a double jeopardy defense. Mangione admitted to traveling to New York with the intent to shoot Thompson, stating in court, "On the morning of Dec. 4, 2024, I shot Mr. Thompson in Manhattan."

The Background You Need

Brian Thompson, the CEO of UnitedHealthcare, was shot and killed on December 4, 2024, outside a Hilton hotel in Manhattan. Prosecutors allege that Luigi Mangione, 28, was the assailant, a hooded figure captured on surveillance video approaching Thompson from behind and firing a handgun. The motive appears to be linked to Thompson's role at UnitedHealthcare. Mangione had reportedly researched an upcoming investor conference hosted by the company, even calling UnitedHealthcare posing as an investor to gather information. His defense team may leverage this federal guilty plea to argue double jeopardy in the upcoming state murder trial, a legal principle that prevents an individual from being tried twice for the same crime.

How the Plea Works

By pleading guilty to federal stalking charges, Luigi Mangione has formally admitted to specific actions that led to Brian Thompson's death. This admission establishes a factual basis for the federal court's jurisdiction and his culpability. The federal charge stems from the stalking aspect of the crime, which involved researching Thompson's whereabouts and activities, including the investor conference. The plea means Mangione accepts responsibility for these actions under federal law. The maximum sentence he faces in this federal case is life in prison. This federal conviction can then be presented in his state-level murder trial, where his defense may argue that prosecuting him again for the same underlying events would violate the constitutional protection against double jeopardy.

Who is Affected and How

Luigi Mangione, the defendant, faces a potential life sentence in federal prison, though the exact sentencing will depend on further legal proceedings and judicial discretion. UnitedHealthcare and its employees are directly affected by the loss of their CEO, Brian Thompson, and the company has issued statements expressing gratitude for the legal process moving towards justice for Thompson and his family. Brian Thompson's family and loved ones are experiencing profound grief and are seeking accountability for the "premeditated attack." They are awaiting the outcomes of both the federal sentencing and the state murder trial to ensure justice is fully served. The legal system is also affected, as the double jeopardy claim, if pursued and successful, could alter the course of the state prosecution.

What Happens Next

Following this federal guilty plea, the immediate next step involves sentencing in the federal case. Mangione has admitted to stalking, and the court will determine his sentence, which could be up to life in prison. Concurrently, the state-level murder trial in New York is still pending. Mangione's defense team is likely to use this federal conviction as grounds to argue double jeopardy, potentially seeking to have the state charges dismissed. For this defense to succeed, Mangione's legal team would need to demonstrate that the federal stalking charge and the state murder charge are based on the same offense, which can be a complex legal argument. If the double jeopardy claim is unsuccessful, Mangione will proceed to trial in New York on murder and other charges. The family of Brian Thompson has stated they will continue to seek justice in all remaining proceedings.