IMPERVA INC

CUSIP: 45321L100 Class: COM

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q4 2016
Shares 27,292 Value ($000) $1,048 Avg Close — Range —
Q3 2016
Shares 45,658 Value ($000) $2,452 Avg Close — Range —
Q2 2014
Shares 51,327 Value ($000) $1,344 Avg Close — Range —