"why would anyone sell at these levels"
In my case, it was to preserve capital, retain free shares, and make cash available to buy in lower should the opportunity arise. Meanwhile I was able to leave most of the shares on the table should good news appear suddenly.
I seldom flip, and tend to look for genuine enterprise value represented by undervalued stock, i.e. investing on fundamentals, then let time work its magic. That said, I bought in dangerously close to the bottom a few weeks ago and was able to take all my initial cash off the table and still leave most of my position in place by selling enough to cover my cost. I will be very surprised if the good news comes soon enough to keep the jackals away, and the MMs would be happy to suck up transaction fees for every sucker they can get to sell. It is in the interest of many parties to beat the PPS down like a monkey with a wooden drum. It is the churn that matters to the MMs, so if there is no reason to raise the PPS, they will just make money by stomping the price back down into the dirt.
I believe in MMTC, having done considerable research and also being fortunate to benefit from all the fine DD here. Many thanks to all that dig, inform, infer, and share. This is a great technology and I hope it will empower a great company to make great profits. I have a target PPS to reacquire my other shares if trends suggest that I should do so. Meanwhile, I am now officially "longer" than my previous long position, as I no longer fear losing my investment capital. I didn't sell when I had a 12-bagger on the line for most of my shares, so unless I see clear signs of pending malfeasance, my position is riding into the sky with the looming demand for the MIT-1000.
(But I STILL want to know why they need a 400% increase in the A/S. I've seen many a promising company killed by dilution.)