Nothing to puzzle about, few willing to sell at these prices and few willing to pay the price the existing stock holders are asking for.
Zero chance of dilution from the company, nothing trading now except stock already on the market.
We all know there are about a half dozen possible PRs to hit in the next 6 months. Even if we get only half (worst case) our price is destined to go up (probably double), if we get 75% or more of these announced our price will soar.
I don't blame the folks who haven't been watching this stock for a few years to not 'believe' all the good things being said because all OTC boards have people posting claims of great news coming. But in our case it is true and current shareholders are believers. The proof is in the existing stock price and low volume.