MASONITE INTL CORP NEW

CUSIP: 575385109 Class: Foreign Stock

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

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

Q2 2015
Shares 3,600 Value ($000) $252 Avg Close — Range —
Q1 2015
Shares 3,527 Value ($000) $237 Avg Close — Range —