.s . treasury 2019s capital purchase program , we issued 20000 shares of our series b fixed-rate cumulative perpetual preferred stock , $ 100000 liquidation preference per share , and a warrant to purchase 5576208 shares of our common stock at an exercise price of $ 53.80 per share , to treasury , and received aggregate proceeds of $ 2 billion . the aggregate proceeds were allocated to the preferred stock and the warrant based on their relative fair values on the date of issuance