News & Your Opinion Halo Mon ,12 2424 7 hours ago Last Updated : 03:00 PM Luigi Mangione pleads not guilty to state murder and other charges in the killing of UnitedHealthcare’s CEO The suspect in the UnitedHealthcare CEO shooting has pleaded not guilty on state charges. HALO NEWSLETTER Keep reading HALO with a Free Subscription unlock this story instantly and join members and pros reading HALO daily -It's Free SIGN UP LOGIN