I'm sure most of what is available are the 67 million shares. Pretty obvious. The guy now has the opportunity to turn $1.3 million into around $2.5 or $3 million in a couple weeks. Not bad.
The person who holds until it's worthless is also wrong. Everybody makes a bad investment decision every now and then. But hanging on because of false hope isn't wise. If you only have a couple thousand invested, like I did, and you lose it, it's not a big deal. But continuing to buy shares when no new data or a solid clinical trial date are announced is taking on risk foolishly.