IMPERVA INC

CUSIP: 45321L100 Class: COM

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2018
Shares 55,331 Value ($000) $3,081 Avg Close Range
Q3 2018
Shares 53,309 Value ($000) $2,476 Avg Close Range
Q2 2018
Shares 53,328 Value ($000) $2,573 Avg Close Range
Q1 2018
Shares 51,818 Value ($000) $2,244 Avg Close Range
Q4 2017
Shares 53,665 Value ($000) $2,131 Avg Close Range
Q3 2017
Shares 53,596 Value ($000) $2,326 Avg Close Range
Q2 2017
Shares 59,306 Value ($000) $2,838 Avg Close Range
Q1 2017
Shares 56,434 Value ($000) $2,317 Avg Close Range
Q4 2016
Shares 59,134 Value ($000) $2,271 Avg Close Range
Q3 2016
Shares 60,734 Value ($000) $3,262 Avg Close Range
Q2 2016
Shares 60,134 Value ($000) $2,586 Avg Close Range
Q1 2016
Shares 59,583 Value ($000) $3,009 Avg Close Range
Q4 2015
Shares 49,174 Value ($000) $3,113 Avg Close Range
Q3 2015
Shares 48,474 Value ($000) $3,174 Avg Close Range
Q2 2015
Shares 48,474 Value ($000) $3,282 Avg Close Range
Q1 2015
Shares 46,990 Value ($000) $2,006 Avg Close Range
Q4 2014
Shares 40,990 Value ($000) $2,026 Avg Close Range
Q3 2014
Shares 40,816 Value ($000) $1,173 Avg Close Range
Q2 2014
Shares 40,384 Value ($000) $1,057 Avg Close Range
Q1 2014
Shares 36,684 Value ($000) $2,043 Avg Close Range
Q4 2013
Shares 36,584 Value ($000) $1,761 Avg Close Range
Q3 2013
Shares 36,284 Value ($000) $1,525 Avg Close Range
Q2 2013
Shares 35,186 Value ($000) $1,585 Avg Close Range
Q1 2013
Shares 17,984 Value ($000) $692 Avg Close Range