IMPERVA INC

CUSIP: 45321L100 Class: COM

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q4 2018
Shares 5,632 Value ($000) $314 Avg Close — Range —
Q3 2018
Shares 5,072 Value ($000) $236 Avg Close — Range —
Q3 2017
Shares 7,067 Value ($000) $307 Avg Close — Range —
Q2 2017
Shares 4,658 Value ($000) $223 Avg Close — Range —
Q3 2016
Shares 3,880 Value ($000) $208 Avg Close — Range —
Q4 2015
Shares 5,623 Value ($000) $356 Avg Close — Range —
Q3 2015
Shares 5,869 Value ($000) $384 Avg Close — Range —
Q2 2015
Shares 4,515 Value ($000) $306 Avg Close — Range —
Q1 2014
Shares 5,550 Value ($000) $309 Avg Close — Range —
Q4 2013
Shares 6,622 Value ($000) $319 Avg Close — Range —
Q3 2013
Shares 5,597 Value ($000) $235 Avg Close — Range —
Q2 2013
Shares 5,657 Value ($000) $255 Avg Close — Range —