From the web site of the Knights of Malta: 

<<Members of the First Class are Knights of Justice, or Professed Knights, and the Professed Conventual Chaplains, who have made vows of “poverty, chastity and obedience aspiring to perfection according to the Gospel”. They are religious according to Canon Law but are not obliged to live in community.>>

https://www.orderofmalta.int/sovereign-order-of-malta/knights-of-malta/
Please feel free to share this information as you see fit. :)