IMPERVA INC

CUSIP: 45321L100 Class: COM

ALLIANCEBERNSTEIN L.P.'s Holding History (CIK: 0001109448)

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

Q4 2018
Shares 50,607 Value ($000) $2,818 Avg Close — Range —
Q3 2018
Shares 55,050 Value ($000) $2,557 Avg Close — Range —
Q2 2018
Shares 56,150 Value ($000) $2,709 Avg Close — Range —
Q1 2018
Shares 53,550 Value ($000) $2,319 Avg Close — Range —
Q4 2017
Shares 53,550 Value ($000) $2,126 Avg Close — Range —
Q3 2017
Shares 55,950 Value ($000) $2,428 Avg Close — Range —
Q2 2017
Shares 55,950 Value ($000) $2,677 Avg Close — Range —
Q1 2017
Shares 47,850 Value ($000) $1,964 Avg Close — Range —
Q4 2016
Shares 47,850 Value ($000) $1,837 Avg Close — Range —
Q3 2016
Shares 47,850 Value ($000) $2,570 Avg Close — Range —
Q2 2016
Shares 50,400 Value ($000) $2,168 Avg Close — Range —
Q1 2016
Shares 483,791 Value ($000) $24,431 Avg Close — Range —
Q4 2015
Shares 329,421 Value ($000) $20,856 Avg Close — Range —
Q3 2015
Shares 312,961 Value ($000) $20,493 Avg Close — Range —
Q2 2015
Shares 318,070 Value ($000) $21,533 Avg Close — Range —
Q1 2015
Shares 356,180 Value ($000) $15,209 Avg Close — Range —
Q4 2014
Shares 78,230 Value ($000) $3,867 Avg Close — Range —
Q3 2014
Shares 35,600 Value ($000) $1,023 Avg Close — Range —
Q2 2014
Shares 28,900 Value ($000) $757 Avg Close — Range —
Q1 2014
Shares 37,300 Value ($000) $2,078 Avg Close — Range —
Q4 2013
Shares 37,300 Value ($000) $1,795 Avg Close — Range —
Q3 2013
Shares 39,753 Value ($000) $1,670 Avg Close — Range —
Q2 2013
Shares 36,470 Value ($000) $1,643 Avg Close — Range —