IMPERVA INC

CUSIP: 45321L100 Class: COM

BOKF, NA's Holding History (CIK: 0000009634)

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

Q4 2018
Shares 5,716 Value ($000) $319 Avg Close — Range —
Q3 2018
Shares 6,309 Value ($000) $293 Avg Close — Range —