Some members are listed here: https://wiki.f-si.org/index.php/FSiC2019#Organizing_committee .
Our logo intentionally resembles the FSF logo because we aim to be for silicon what the FSF is for software. We had extensive discussions with Richard Stallman before deciding to create the F-Si.
The F-Si is formally a "Swiss Verein" according to Art. 60-79 of the ZGB (see en.wikipedia.org for legal details and budget checking rules).
The F-Si budget is currently below 10kEur.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko