The investors are "long" because they are now holding restricted shares that can't be sold for a year, for which they paid .90/share.
Wrong. If the “investors” maintain their short positions for the duration of the restricted period, they are flat, not long. It doesn’t make any difference to a short against the box whether the shares are restricted or unrestricted, so your follow-up post was a non sequitur.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”