I agree. We will have a good idea if those shares are changing hands because they are also in cert form.
I just sent an email last week asking about those. I asked who owns them and what were the conditions that needed to be satisfied for the shares to become unrestricted but I have not heard back yet.
And it looks like they cannot sell them until ACDU is current:
"If you want to sell your restricted or control securities to the public, you can follow the applicable conditions set forth in Rule 144. The rule is not the exclusive means for selling restricted or control securities, but provides a "safe harbor" exemption to sellers. The rule's five conditions are summarized below:"
"Adequate Current Information. There must be adequate current information about the issuer of the securities before the sale can be made. This generally means that the issuer has complied with the periodic reporting requirements of the Exchange Act."