If news of the kind to push the stock price to a level to economically force the warrant holders to exercise is coming, then that news will hit sometime tomorrow - could be after the close, but almost surely will be tomorrow.
I have no idea whether that will happen or not, but that was what was reported last week on this board, arising out of a conversation the poster had with RN. Of course, perhaps RN felt the news that already has been released would have been sufficient to do the trick - that's not impossible, but I'd rate it unlikely. And it's also possible that NOT was promised assay results in time for an NR tomorrow and that hasn't happened (assuming E2 assays were to be the catalyst).
If not for the reported RN comments, I would think if things look real good, that it may have been in everyone's (except the warrant holders) best interest for the stock to hold above $6 for ten consecutive days, resulting in the acceleration of the exercise date to a time prior to the expiration of trading restrictions on the common stock, and then have those warrants expire unexercised, no more to overhang the share price with dilution at a figure that is too great a bargain. If NOT needs the money, there's hardly a soul on this board who doesn't believe we'll be able to raise the same amount of money for half the number of shares issued in a few months.
And consider this, when RN says not to worry, that there will be news out prior to April 10 that will make the decision to exercise academic for the warrant holders (paraphrasing to the best of my recollection), wouldn't that, in effect, be telling people to buy stock for under $6 before the 10th, cuz news is coming that will kick us to $6 or more? RN's gotta watch what he says!
So tomorrow, and at the absolute latest Thursday morning, should prove illuminating and instructive. I'd love to wake to a halt tomorrow!