True - they are bonus shares.
However - if I read the 8K correctly - they are bonus shares that (mostly) haven't been awarded yet as the milestones to be reached for most, if not all of them, have not been reached yet.
So - it is (indeed) potential dilution. However, it is dilution that only comes when the specified milestones are met.
The closest one of those milestones appears to be getting enrollment in the current H&N Canncer trial to 350 patients. And that one triggers 25% of the shares to be awarded.
So - it is dilution that comes at times where the company has achieved goals that will also have potentially increased shareprices for the rest of us out here in retail.