" could it be that they dont want this stock to move, or an offer to be made until they get their tax deduction for the flow thru shares, which they have to hold for a year before they can sell to get the 50% deduction"

I'm not up on the math concerning this, but I would wonder if that amount would be significant enough or of any concern if they were considering an early sell. If they were planning for continued exploration for some time to come the money would certainly be a consideration and keeping things quiet is certainly a factor in avoiding unwanted attention.