PROS HOLDINGS INC

CUSIP: 74346Y103 Class: Common Stock

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

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

Q4 2014
Shares 45,636 Value ($000) $1,254 Avg Close — Range —
Q3 2014
Shares 51,042 Value ($000) $1,286 Avg Close — Range —
Q2 2014
Shares 53,646 Value ($000) $1,418 Avg Close — Range —
Q1 2014
Shares 74,530 Value ($000) $2,348 Avg Close — Range —
Q4 2013
Shares 73,289 Value ($000) $2,924 Avg Close — Range —
Q3 2013
Shares 117,695 Value ($000) $4,024 Avg Close — Range —
Q2 2013
Shares 120,925 Value ($000) $3,622 Avg Close — Range —