Luigi Nicholas Mangione

OVERVIEW & LEGAL HISTORY SUMMARY

Luigi Nicholas Mangione (born May 6, 1998) is a Towson, Maryland native, former software engineer, and University of Pennsylvania graduate (BSE/MSE). Prior to December 2024, Mangione resided in Honolulu, Hawaii, and traveled extensively in Asia while suffering from severe chronic back pain attributed to L5–S1 spondylolisthesis. In late November 2024, Mangione traveled from Georgia to New York City using a fraudulent New Jersey driver's license under the name 'Mark Rosario' and checked into an Upper West Side hostel. On December 4, 2024, Mangione positioned himself outside the New York Hilton Midtown hotel and fatally shot UnitedHealthcare CEO Brian Thompson in the back and leg with a 3D-printed 9mm pistol equipped with a silencer. Shell casings recovered at the crime scene bore the words 'DENY', 'DEPOSE', and 'DELAY', referencing health insurance claim denial practices. Following a five-day multistate manhunt, law enforcement officers arrested Mangione on December 9, 2024, at a McDonald's in Altoona, Pennsylvania. Officers recovered the 3D-printed firearm, silencer, fake ID, and a handwritten document expressing hostility toward the health insurance industry. On December 19, 2024, federal prosecutors in the Southern District of New York unsealed a criminal complaint charging Mangione with interstate stalking and firearms violations. Although U.S. Attorney General Pam Bondi directed prosecutors to seek the death penalty in April 2025, U.S. District Judge Margaret Garnett dismissed the capital firearms charges on January 30, 2026, under the categorical approach, removing death penalty eligibility. On August 14, 2026, Mangione entered a formal guilty plea before Judge Garnett in SDNY to two federal counts of interstate stalking resulting in death under 18 U.S.C. §§ 2261A(1)(A) and 2261A(2). During allocution, Mangione admitted to stalking and shooting Thompson due to grievances against the health insurance system. He remains incarcerated at MDC Brooklyn awaiting sentencing on December 18, 2026, where he faces up to life imprisonment. Concurrent New York state murder charges remain indefinitely postponed pending a double jeopardy motion under CPL § 40.20, and Pennsylvania state charges are on inactive hold.