HOLOGIC INC

Ticker: HOLX CUSIP: 436440101 Class: COM

ESSEX INVESTMENT MANAGEMENT CO LLC's Holding History (CIK: 0000201772)

Note: Option positions (PUT/CALL) are excluded.

Q3 2013

Shares 61,895 Value ($000) $1,278 Avg Close $21.29 Range $18.46 - $23.24

Q2 2013

Shares 82,108 Value ($000) $1,585 Avg Close $20.89 Range $18.90 - $22.97

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2013	61,895	$1,278	$21.29	$18.46 - $23.24
Q2 2013	82,108	$1,585	$20.89	$18.90 - $22.97