IMPERVA INC

CUSIP: 45321L100 Class: COM

FIRST TRUST ADVISORS LP's Holding History (CIK: 0001125816)

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

Q4 2018
Shares 404,601 Value ($000) $22,532 Avg Close — Range —
Q3 2018
Shares 395,374 Value ($000) $18,365 Avg Close — Range —
Q2 2018
Shares 477,533 Value ($000) $23,041 Avg Close — Range —
Q1 2018
Shares 255,601 Value ($000) $11,068 Avg Close — Range —
Q4 2017
Shares 232,706 Value ($000) $9,238 Avg Close — Range —
Q3 2017
Shares 236,485 Value ($000) $10,263 Avg Close — Range —
Q2 2017
Shares 160,572 Value ($000) $7,683 Avg Close — Range —
Q1 2017
Shares 154,591 Value ($000) $6,346 Avg Close — Range —
Q4 2016
Shares 114,328 Value ($000) $4,390 Avg Close — Range —
Q3 2016
Shares 65,026 Value ($000) $3,493 Avg Close — Range —
Q2 2016
Shares 78,315 Value ($000) $3,368 Avg Close — Range —
Q1 2016
Shares 57,846 Value ($000) $2,921 Avg Close — Range —
Q4 2015
Shares 44,469 Value ($000) $2,815 Avg Close — Range —
Q3 2015
Shares 41,536 Value ($000) $2,720 Avg Close — Range —