The cfo leaving shouldn't bother you because there weren't any revenues to screw around with.<
DNDN doesn’t have any material revenues either, and yet the announcement of the CFO’s departure there was a harbinger of poor performance for the stock.
I wouldn't sell a stock just because the cfo leaves. As with any piece of news it is one more thing to put into the equation of whether to buy or sell
The less the chance there is that the cfo conducted financial shananigans, the less importantance I would put on his leaving.
In this case the company has an early stage product with a lot of cash on the books. Not much for a cfo to do