@lanodan yeah by funds I meant more as an "it owns stuff". I think of them as smart contracts without blockchain - they have a statute ("bylaws" in English but almost no other language calls it that) that governs what it can do with the assets it owns. And the foundation itself has no owners.
It can have members but doesn't have to.
Eg. on wikipedia https://en.wikipedia.org/wiki/Foundation_(nonprofit)
the only mentions of members are "may have members" (in common law) and "have [...] nor members" in Finland.