Dewey is more than just an anonymous investor in IH. It looks like he is working actively on the case. If he can't contact Penon, someone close to him in IH can. They have his e-mail address and most likely his phone number. Penon should have no problem answering simple questions about the report.
Dewey says he has known Darden for many years. IH is not a public corporation, it is an LLC and he is more than anonymous, the group of investors is not large, I'd think, but we do not know the level of his involvement in activities.
Sure, he knows people who can contact Penon, and he might even be able to, but until we see the Report, questions are premature. Dewey has probably seen it, I think, but I do not expect him to broadcast details, he's just having fun here revealing this or that. I do not think that he represents IH, and if he does in some way, it is certainly not official.