I've looked hard and long at Enta and everything looks phenomenal as far as a up and coming bio holding.
I never pulled the trigger because I could never understand why the company was taken public at such a trivial price. The previous investors are all well heeled (including Abbvie) so I saw no reason for them to need the cash. In hindsight they haven't sold.
Enanta's balance sheet wasn't lacking and any future success will pay them handsomely in milestones.
On the plus side the insiders have made nice initial purchases which confirms their belief but I can't get past the original venture groups.
It could be that they simply wanted to unload some risk or the future royalty situation isn't what we think it is.