IMPERVA INC

CUSIP: 45321L100 Class: COM

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2017
Shares 16,874 Value ($000) $807 Avg Close — Range —
Q4 2016
Shares 4,007 Value ($000) $154 Avg Close — Range —
Q2 2016
Shares 8,639 Value ($000) $372 Avg Close — Range —
Q3 2014
Shares 2,371 Value ($000) $68 Avg Close — Range —
Q2 2014
Shares 46,014 Value ($000) $1,205 Avg Close — Range —
Q4 2013
Shares 864 Value ($000) $42 Avg Close — Range —
Q3 2013
Shares 16,497 Value ($000) $693 Avg Close — Range —
Q2 2013
Shares 19,277 Value ($000) $868 Avg Close — Range —