The chief executives of the nine largest banks in the United States trooped into a gilded conference room at the Treasury Department at 3 p.m. Monday. To their astonishment, they were each handed a one-page document that said they agreed to sell shares to the government, then Treasury Secretary Henry M. Paulson Jr. said they must sign it before they left.

Financial Crisis

The chairman of JPMorgan Chase , Jamie Dimon, was receptive, saying he thought the deal looked pretty good once he ran the numbers through his head. The chairman of Wells Fargo , Richard M. Kovacevich, protested strongly that, unlike his New York rivals, his bank was not in trouble because of investments in exotic mortgages, and did not need a bailout, according to people briefed on the meeting.