Pietro,
That you can't find Aero without scouring for a 2 year old press release on his site is proof enough to me that he is ONLY doing whatever that contract told him to do, and NOTHING more, because he is paid to do what it is he has done.
He isn't promoting Aero's products on his site.
He isn't promoting Aero like someone who "believes" in the product.
He was paid to throw his picture and likeness on a few things, and to use a couple of quotes that he obviously didn't think enough of to highlight on his site.
And I don't see him announcing some large purchase of shares either. If this was a super investment, he'd love to make the free cash on the run upward.
And he's got the money to take a 5% stake here easily.
He's chosen not to.
I don't wonder why.
IMO/FWIW
"Taking advice from known stock promoters is like telling a pickpocket where you keep your money!!!"