User blog comment:Cooksey.michael/Community Connect: Our Inaugural San Francisco Admin Gathering Sept 9 - 11/@comment-74.88.49.47-20150816033023/@comment-1038387-20150816190756

I don't think they've released a full ist of attendees, but it's possible a wiki on a popular topic like CoD will have had an invitation.

If you register an account and spend a lot of time helping out, maybe one day you can become an admin, and maybe one day you can be invited for a future meetup.