X0306 4 2014-09-09 0000859737 HOLOGIC INC HOLX 0001190290 ULLIAN ELAINE 35 CROSBY DRIVE BEDFORD MA 01730 1 Common Stock 2014-09-09 4 P 0 7900 25.36 A 7900 D The transaction reported herein reflects an aggregate of purchases at prices ranging from $25.355 and $25.36, inclusive. The Reporting Person further undertakes to provide upon request by the Commission staff, the Issuer, or a security holder of the Issuer, full disclosure with respect to the number of shares purchased at each separate price. /s/ Mark J. Casey, Attorney-In-Fact for Elaine Ullian 2014-09-09