Otto died on 9 March 2015; he was to be publicly announced as the winner of the 2015 Pritzker Prize on 23 March but his death meant the committee announced his award on 10 March.
Otto faleceu o 9 de marzo de 2015; ía ser anunciado como gañador do premio Pritzker 2015 o 23 de marzo, mais o seu pasamento supuxo que se anunciase o premio o día 10 dese mes.