SUMMIT MATLS INC

CUSIP: 86614U100 Class: Common Stock

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

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

Q2 2018
Shares 60,060 Value ($000) $1,577 Avg Close — Range —
Q1 2018
Shares 55,852 Value ($000) $1,691 Avg Close — Range —
Q4 2017
Shares 90,213 Value ($000) $2,836 Avg Close — Range —
Q3 2017
Shares 89,227 Value ($000) $2,858 Avg Close — Range —
Q2 2017
Shares 93,550 Value ($000) $2,701 Avg Close — Range —
Q1 2017
Shares 97,048 Value ($000) $2,398 Avg Close — Range —
Q4 2016
Shares 100,465 Value ($000) $2,390 Avg Close — Range —
Q3 2016
Shares 47,967 Value ($000) $890 Avg Close — Range —