Mozilla files IRS form 990 ("Return of Organization Exempt From Income Tax") annually due to their nonprofit status. This can be found at the bottom of their "State of Mozilla 2018" annual report [1] and contains some details about their financials (as of November, 2019 at least). The linked page itself also contains some information about how Mozilla Corporation and Mozilla Foundation are structured and operate.
If you actually click through Google's result pages, you will find that there are actually only about 87 results. Even if you "repeat the search with the omitted results included" Google returns only about 226 results. Google's estimated result count is routinely off by so much as to make it virtually useless.
> I started a project which called Cosmopolitan which implements the αcτµαlly pδrταblε εxεcµταblε format. I chose the name because I like the idea of having the freedom to write software without restrictions that transcends traditional boundaries.
[1] https://www.mozilla.org/en-US/foundation/annualreport/2018/