. the aggregate purchase price of approximately $ 6156900 included $ 2094800 in cash ; 132038 shares of hologic common stock at an estimated fair value of $ 3671500 ; 16465 of fully vested stock options granted to cytyc employees in exchange for their vested cytyc stock options , with an estimated fair value of approximately $ 241400 ; the fair value of cytyc 2019s outstanding convertible notes assumed in the merger of approximately $ 125000 ; and approximately $ 24200 of direct acquisition costs