X0202 4 2006-05-03 0 0000859737 HOLOGIC INC HOLX5/3/06 0001218713 CASCELLA ROBERT 35 CROSBY DRIVE BEDFORD MA 01730 0 1 0 0 President & COO Restricted Stock Unit Award (Right to Receive) 46.38 2006-05-03 4 A 0 10781 0 A 2008-12-31 2008-12-31 Common Stock 10781 10781 D The restricted stock unit award converts to shares of common stock on a 1-for-1 basis. The restricted stock units have been granted under Hologic's Amended and Restated 1999 Equity Incentive Plan. The restricted stock units will become 100% vested on December 31, 2008 (the "Restrictions Lapse Date") only if the reporting person remains employed by the Company in the positions set forth in the reporting person's retention and severance agreement at all times prior to Restrictions Lapse Date. Robert Cascella 2006-05-03