IMPERVA INC

CUSIP: 45321L100 Class: COM

NEXT CENTURY GROWTH INVESTORS LLC's Holding History (CIK: 0001134007)

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

Q1 2016
Shares 122,493 Value ($000) $6,185 Avg Close — Range —
Q4 2015
Shares 371,810 Value ($000) $23,539 Avg Close — Range —
Q3 2015
Shares 336,373 Value ($000) $22,025 Avg Close — Range —
Q2 2015
Shares 126,371 Value ($000) $8,555 Avg Close — Range —
Q1 2014
Shares 766,042 Value ($000) $42,668 Avg Close — Range —
Q4 2013
Shares 634,412 Value ($000) $30,534 Avg Close — Range —
Q3 2013
Shares 1,120,461 Value ($000) $47,081 Avg Close — Range —
Q2 2013
Shares 1,202,018 Value ($000) $54,138 Avg Close — Range —