More precisely the percentage was 3.6, which is not great, but not terrible. I've been told it's the equivalent of a few pay raises.
Criminal violations are not supposed to be protected by the corporate veil.
And they aren't, at least in the US. Just look at Martin Shkreli actually serving 5 years in prison for securities fraud and personally repaying ~$70mil.
P.S. none of this is related to the Daraprim controversy btw. Thought to mention because I have been seeing that misconception quite a bit online.