IMPERVA INC

CUSIP: 45321L100 Class: COM

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q2 2018
Shares 94,593 Value ($000) $4,564 Avg Close — Range —
Q1 2018
Shares 172,352 Value ($000) $7,463 Avg Close — Range —
Q4 2017
Shares 168,702 Value ($000) $6,697 Avg Close — Range —
Q3 2017
Shares 157,419 Value ($000) $6,832 Avg Close — Range —
Q3 2016
Shares 23,401 Value ($000) $1,257 Avg Close — Range —
Q4 2015
Shares 47,959 Value ($000) $3,036 Avg Close — Range —