You can read much more here: https://blog.torproject.org/blog/transparency-openness-and-our-2015-financia...

Also, Linus has published some of our core corporate documents, like the Articles of Organization from founding the organization, our Form 1023 where we applied for non-profit status, and our IRS determination letter where they confirmed it. You can see those here: https://gitweb.torproject.org/company/policies.git/tree/corpdocs

Yay transparency, --Roger