Mangione marked his 27th birthday with a list of "27 Things I'm Grateful For" that he sent to various people who have been writing to him in jail and that is now circulating online.

Luigi Mangione has written a letter from prison as he awaits trial for the killing of UnitedHealthcare CEO Brian Thompson.

Shares of UnitedHealth Group Inc. took a deep dive Tuesday, after the health insurer said it no longer backed its full-year financial outlook, as medical costs continued to rise more than expected.

Karen Read denies noticing confrontation between boyfriend and ATF agent hours before his deathDIGGING UP THE PAST: Key ...

Pages from the alleged CEO killer’s journal appear to signal that he considered a different target before deciding it would ...

Prosecutors say, to Mangione, Thompson and UnitedHealthcare were symbols of the healthcare industry and what the 27-year-old ...

Prosecutors say in the months before Mangione allegedly shot and killed Brian Thompson, he revealed a motive for murdering ...

Manhattan prosecutors said of Luigi Mangione’s handwritten diary entries, “If ever there were an open-and-shut case pointing ...

Prosecutors referenced alleged diary entries they say Mangione wrote in the months leading up to the shooting of UnitedHealthcare CEO Brian Thompson.

Luigi Mangione wrote about plans to kill UnitedHealthcare CEO Brian Thompson in his diary months before Thompson was gunned down in New York City last year, state prosecutors alleged in a court filing ...

Prosecutors say a handwritten diary makes clear Mangione deliberately gunned down UnitedHealthcare CEO Brian Thompson to “send a message” and “trigger widespread action.” ...