IMPERVA INC

CUSIP: 45321L100 Class: COM

ALPINE ASSOCIATES MANAGEMENT INC.'s Holding History (CIK: 0001396835)

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

Q4 2018
Shares 950,465 Value ($000) $52,931 Avg Close — Range —
Q4 2017
Shares 355,600 Value ($000) $14,117 Avg Close — Range —
Q3 2017
Shares 330,200 Value ($000) $14,331 Avg Close — Range —
Q1 2017
Shares 819,894 Value ($000) $33,656 Avg Close — Range —
Q4 2016
Shares 569,543 Value ($000) $21,871 Avg Close — Range —