I know. Makes you wonder a bit. Everything else is dong well this week.
I've not liked the regular small selling of all insiders (except the Bakers). I take consolation in the normally very large GHDX positions they are selling from. Even still, some of the board members selling don't own all that much.
In the past year this sort of slide has happened when the Bakers took some time off. Then the stock came back and the subsequent SEC filings revealed they owned another 2% of the company.
Volume has been meager with this slide. Hanging in, looong. :-)
(biotech portfolio: long TSRX, CBST, DSCO, and GHDX)