IMPERVA INC

CUSIP: 45321L100 Class: COM

Campbell & CO Investment Adviser LLC's Holding History (CIK: 0001353570)

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

Q1 2018
Shares 5,147 Value ($000) $223 Avg Close — Range —
Q4 2017
Shares 10,129 Value ($000) $402 Avg Close — Range —