Drilling, page-13

Looking at the selling and buying pattern one can definitely say there is manipulation. If you are desperate to dump the stock in huge volume then the share price will crash and thus even if you want to you can't coz it will book a huge loss on your portfolio. If you want to buy at market price then there is not much volume available and that drives up the price. Unfortunately for long term holders there is not much demands for this stock and so the price stuck where it is and stay at the mercy of the sellers or short traders. Best way to accumulate this stock cheaply (if you have the ball and money) is to stick in a buy order at the same price on the sell side and wait for the short sellers to do their trades.
I doubt Kerogen is losing fate and dumping the stock becoz if they the sp will crash. But maybe it is them or others bigger holders tried to hold down the price for their own agendas.