NEW YORK — Brian Thompson, the CEO of UnitedHealthcare, was fatally shot outside a hotel in midtown Manhattan where he was scheduled to speak at an investor meeting Wednesday morning, according to a person briefed on the investigation. The person spoke on the condition of anonymity because they were not authorized to speak on the investigation. [time-brightcove not-tgx=”true”] Police did not release the victim’s name, but said a 50-year-old was shot around 6:45 a.m.