FORTERRA INC

CUSIP: 34960W106 Class: COM

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

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

Q1 2017
Shares 11,679 Value ($000) $228 Avg Close — Range —
Q4 2016
Shares 15,866 Value ($000) $344 Avg Close — Range —