Before theymos became sole Admin, someone managed it and his name is Martti Malmi and bitcointalk username or nickname
(Sirius) he is a co-creator of the forum and handed over to Theymos.
There is more information about forum admin history and the forum domain changes are in this topic
There were some forum admins after satoshi: theymos, Gavin Andresen and sirius (Martti Malmi). There was time when both theymos and sirus were forum admins until 2012 when theymos became a head admin after sirius left.
The active administrators are currently:
theymos (me)
Gavin Andresen
sirius
Sirius runs the server.
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...
Of course not, do you really need to ask?
- 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.
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.
The story of how I became head admin is actually pretty boring. Moderators were needed, so I was made a global moderator. Then admins were needed, so I was made an admin. Then over time the other admins slowly lost interest and resigned until I was the only one left. I guess most of the people who were around here to see this have more-or-less left the community now. That's a bit sad.
It's not entirely clear, but for simplicity I usually say that I became head admin at the beginning of 2011, a little over a year after the forum was created.
The forum was originally located at bitcoin.org/smf, then forum.bitcoin.org (hence the redirect), and finally bitcointalk.org. Fun fact: The name "bitcointalk" was invented by Jeff Garzik, and he's the one who bought the domain.