Private PlacementsThey couldn't stick a million $ into this thing without the stock price shooting well over a dollar. They wanted in, they know it's undervalued, so they did it private placement.
If they chose to, they could invest 5 Mil, the first 4 private, and then the last mil to skyrocket the price, and now they're holding what's likely worth at LEAST tens of millions in stock. It would likely bring some notice from the big boys on top of that, raising it further, and allowing them to cash out at those much higher prices, as there would be interest to sustain it.