You mean Satoshi has a private group? AFAIK, he doesn't have it and he's total anonymous so how he could have a small group. If there's a group that he's left, it's this forum.

He's gone more than a decade ago and check his profile account to see on how long he's abandoned his account: satoshi
Whoever is the owner of that group, he's not satoshi and will never ever prove that he owns a thing or two. How come that people on that group have 100+ bitcoins then doesn't know that satoshi will never be back.