Good post, and I'm glad you reposted here. This is a concern, though I believe there is plenty of cash in the coffers, plus that credit line, to cover operating expenses for a very long time. But we are burning money, while we wait for something to pan out.
My only question to you in the context of this specific post is how do you "mix" the need for cash and a secondary offering as you suggest with the fact that PTSC is, has been, and will be buying back shares? Buy back so they can sell at a probable lower price? It just seems rather counter-intuitive.
SGE