They sell the price at that price to the underwriting investment bank (who takes the risk) and they're done. Then the stocks are out there for people to trade.

They sell the price at that price to the underwriting investment bank (who takes the risk) and they're done. Then the stocks are out there for people to trade. Twitter doesn't get money or lose money from the market price of the stock. They get more money when they issue/sell more stock.