IMPERVA INC

CUSIP: 45321L100 Class: COM

Swiss National Bank's Holding History (CIK: 0001582202)

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

Q4 2018
Shares 55,739 Value ($000) $3,102 Avg Close — Range —
Q3 2018
Shares 54,239 Value ($000) $2,517 Avg Close — Range —
Q2 2018
Shares 54,239 Value ($000) $2,617 Avg Close — Range —
Q1 2018
Shares 50,139 Value ($000) $2,171 Avg Close — Range —
Q4 2017
Shares 48,239 Value ($000) $1,915 Avg Close — Range —
Q3 2017
Shares 48,239 Value ($000) $2,094 Avg Close — Range —
Q2 2017
Shares 48,239 Value ($000) $2,308 Avg Close — Range —
Q1 2017
Shares 48,239 Value ($000) $1,980 Avg Close — Range —
Q4 2016
Shares 48,239 Value ($000) $1,852 Avg Close — Range —
Q3 2016
Shares 46,039 Value ($000) $2,473 Avg Close — Range —
Q2 2016
Shares 47,939 Value ($000) $2,062 Avg Close — Range —
Q1 2016
Shares 46,539 Value ($000) $2,268 Avg Close — Range —
Q4 2015
Shares 37,239 Value ($000) $2,358 Avg Close — Range —
Q3 2015
Shares 36,539 Value ($000) $2,393 Avg Close — Range —
Q2 2015
Shares 31,539 Value ($000) $2,135 Avg Close — Range —
Q1 2015
Shares 31,039 Value ($000) $1,325 Avg Close — Range —
Q4 2014
Shares 21,100 Value ($000) $1,043 Avg Close — Range —
Q3 2014
Shares 20,700 Value ($000) $595 Avg Close — Range —
Q2 2014
Shares 20,700 Value ($000) $542 Avg Close — Range —
Q1 2014
Shares 18,000 Value ($000) $1,003 Avg Close — Range —
Q4 2013
Shares 13,700 Value ($000) $659 Avg Close — Range —
Q3 2013
Shares 13,700 Value ($000) $576 Avg Close — Range —
Q2 2013
Shares 14,300 Value ($000) $644 Avg Close — Range —