Luigi Mangione is an American man who rose to public attention after being accused of fatally shooting UnitedHealthcare CEO Brian Thompson in New York City on December 4, 2024. He was arrested five days later in Altoona, Pennsylvania, after a nationwide manhunt and charged in state and federal courts with multiple offenses related to the killing and weapons possession[2][1]. Born in Towson, Maryland, Mangione was academically high-achieving: he graduated valedictorian from the Gilman School in 2016 and earned both bachelor’s and master’s degrees in computer science (with related studies in engineering and mathematics) from the University of Pennsylvania in 2020[1][2]. While at Penn he co‑founded a video-game development club and was active in student technology activities; his early work experience included internships and roles in software and data engineering at firms such as Firaxis and TrueCar[3][5]. Reporting on his background has described periods of intellectual interest in critique of modern technology and society, including reading extremist writings, and a handwritten note found with him at arrest that criticized the healthcare industry and claimed sole responsibility for the attack[1][3][4]. Authorities reported he was carrying a partially 3D‑printed firearm and ammunition when taken into custody[1][3]. Legally, Mangione has faced an array of charges: state indictments including murder and federal charges that at one point included allegations tied to terrorism, with federal prosecutors seeking the death penalty; some terror-related charges were later dismissed by a New York judge in September 2025, though other murder charges remain[2]. He has been held in federal detention awaiting further proceedings[1][2]. Coverage of Mangione emphasizes his prior academic and technical accomplishments alongside the serious criminal allegations and their legal developments; reporting continues as courts proceed and as prosecutors and defense prepare for trial[3][2].