Don't think it was confirmed specifically, but I think Lauri was probably positive as well given the window and missed games.
Other teams around the league, one way or another, have said specifically whether certain players tested positive. I wonder if they talk to the players before hand or if that information is leaked? Haven't looked into each press release.
It's kinda interesting that the exact results of Kev's and Marrkk's tests haven't been announced/leaked. As the years go by, it seems like internal Cavs information is held closer to the chest than it once was.
Probably in no small part due to the absence of LeBron and the attention he brought.