IMPERVA INC

CUSIP: 45321L100 Class: COM

BAMCO INC /NY/'s Holding History (CIK: 0001017918)

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

Q1 2014
Shares 143,690 Value ($000) $8,004 Avg Close — Range —
Q4 2013
Shares 163,820 Value ($000) $7,885 Avg Close — Range —
Q3 2013
Shares 102,500 Value ($000) $4,307 Avg Close — Range —
Q2 2013
Shares 123,309 Value ($000) $5,554 Avg Close — Range —