IMPERVA INC

CUSIP: 45321L100 Class: COM

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q3 2017
Shares 52,500 Value ($000) $2,279 Avg Close — Range —
Q2 2017
Shares 52,500 Value ($000) $2,512 Avg Close — Range —
Q1 2017
Shares 60,000 Value ($000) $2,463 Avg Close — Range —
Q4 2016
Shares 40,000 Value ($000) $1,536 Avg Close — Range —
Q3 2016
Shares 30,000 Value ($000) $1,611 Avg Close — Range —
Q2 2016
Shares 30,000 Value ($000) $1,290 Avg Close — Range —
Q1 2016
Shares 25,000 Value ($000) $1,263 Avg Close — Range —
Q4 2015
Shares 20,000 Value ($000) $1,266 Avg Close — Range —