That's the long-term bet. Right now risk is greatly reduced becaause both Phase1 Clinical Trials had positive primary outcomes.
So, this means later stage Phase 2 clinical trials are highly likely. Generally progressing to P2 means higher share prices, or at least share price support.
No clinical trial can fail at the present, so reduced risk.
Once P2 clinical trials are well underway, I agree that at that point risk increases. My investment thesis is it will likely be possible to take some money off the TPIV table at higher share prices up till that point. Right now looks like too low. JMO that we are seeing a capitulation low. I could be wrong. (I note the chart just turned green)
Of course in hindsight it would have been great to have sold some higher.