Luigi Mangione pleads guilty to federal stalking charges in killing of UnitedHealthcare CEO

Luigi Mangione pleaded guilty on August 14, 2026, in Manhattan federal court to federal stalking charges in the killing of UnitedHealthcare CEO Brian Thompson, reversing his earlier not-guilty plea. Federal prosecutors offered him no deal, and sentencing is set for December 18, 2026, when prosecutors will seek life in prison. The parallel New York state murder case may be affected by a double-jeopardy argument from his lawyers.

• Pleaded guilty in US District Court, Southern District of New York
• No plea deal with federal prosecutors
• Sentencing set for December 18, 2026; prosecutors seek life imprisonment
• Defense may seek to dismiss the state case on double-jeopardy grounds