It's surprising how well-documented history can become totally forgotten... Satoshi created the forum on Nov 22, 2009, and was head administrator until almost 2011. Then Sirius was head administrator until 2012, which is when I took over.

Cobra also owns the bitcointalk.org domain name. I consider the forum to be basically owned by or at least dedicated to the Bitcoin community, though; I don't call anyone an owner of the forum.

That wiki article is kind of terrible...

The forum was opened to the public on Nov 22.

- During the school year, I am a full time student. I barely have time to administrate the forum.

- I was made a forum admin in 2011, after Satoshi left. (Silk Road also appeared after Satoshi left.) I didn't have any special access to bitcoin.org until around 2013, and in fact I didn't even have any access to the bitcointalk.org DNS until 2013.

The active administrators are currently:
theymos (me)
Gavin Andresen
sirius

Sirius runs the server.

Bitcoin.org:
 - Cobra has ultimate control over the domain name. I have access to the domain name settings.
 - Cobra runs the server.
 - Will Binns holds the BTC.

Bitcointalk.org:
 - Cobra has ultimate control over the domain name. I have access to the domain name settings.
 - I run the server. Cobra has no access to the database or server.
 - The BTC is held by myself and the treasurers. Cobra has no access.

I am not Cobra. What would even be the point of that?

There was a period where both Sirius and I were active administrators. For convenience, I reckon Jan 1, 2012 as when I became head administrator, though it was actually a gradual transition starting before and ending after that.