https://www.washingtonpost.com/news/the-intersect/wp/2015/12...
At the time they had reported net assets in excess of $77 million. Even by mid-2020, that had increased to $180 million.
https://en.wikipedia.org/wiki/Wikimedia_Foundation#Financial...
The Wikimedia Foundation had an 8-figure surplus in 9 of the last 10 years. The only exception was 2013/2014, where the surplus was "only" $8.3M. That was their "worst year" in the last ten years. The Wikimedia Foundation has beaten its own annual revenue record every year of its existence.