IMPERVA INC

CUSIP: 45321L100 Class: COM

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2018
Shares 648 Value ($000) $36 Avg Close — Range —
Q2 2018
Shares 14,398 Value ($000) $695 Avg Close — Range —
Q1 2018
Shares 34,397 Value ($000) $1,489 Avg Close — Range —
Q3 2016
Shares 107,046 Value ($000) $5,749 Avg Close — Range —
Q4 2015
Shares 12,118 Value ($000) $767 Avg Close — Range —
Q3 2014
Shares 19,603 Value ($000) $563 Avg Close — Range —