I will add as more information comes available.
Video streaming by Ustream
1:06 PM PT: They are on the roof of a Wells Fargo in the Mission district.
1:11 PM PT: They have established a tent on the bank.
1:12 PM PT: Wells Fargo 16th and Mission
1:29 PM PT: The Occupiers Demands are that they get a meeting with the Wells Fargo CEO by January 19th or EVERY bank in the financial district will be shut down. They want foreclosures based on profit to stop. We have ample evidence the banks have not dealt with the foreclosure crisis in good faith.
1:35 PM PT: Police are amassing on the roof via a fire department ladder.
1:43 PM PT: The Occupiers are coming down the ladder on their own volition and being arrested and placed in a paddy wagon.
1:45 PM PT: A Tweet bassed on an exchange on the livestream:
#SFPD officer Aloise shoves @pixplz. Badge #1303. Bystander says "He's been very handsy today."
1:48 PM PT: Occupiers on the ground are now engaging in a sit in on Hoff St.
1:55 PM PT: Occupiers moving to 7th and Valencia to Occupy the police station.