In that case when are insider buys ever a positive signal?
In a business that actually sells a product, it can mean the organic business of the firm is doing well. You can buy when you know sales and profits will rise.
For a deal driven business like ADXS, it means those "term sheets" Ken was promoting were all smoke and mirrors to sucker investors. Nothing with a reasonable prospect of closing in the near term.
That said, if they were in discussions and had a deal hammered out and waiting to be finalized pending trial results, they could buy and I would expect them to buy BIG.
Since they are making chicken feed buys, it is just more smoke and mirrors to sucker investors and the deal bag is empty.