NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

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

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

Q4 2018
Shares 103,218 Value ($000) $2,954 Avg Close — Range —
Q3 2018
Shares 139,215 Value ($000) $3,883 Avg Close — Range —
Q2 2018
Shares 100,642 Value ($000) $2,808 Avg Close — Range —
Q1 2018
Shares 98,770 Value ($000) $2,455 Avg Close — Range —
Q4 2017
Shares 102,377 Value ($000) $2,481 Avg Close — Range —
Q3 2017
Shares 103,980 Value ($000) $2,870 Avg Close — Range —
Q2 2017
Shares 115,094 Value ($000) $2,885 Avg Close — Range —
Q1 2017
Shares 125,415 Value ($000) $3,365 Avg Close — Range —
Q4 2016
Shares 131,315 Value ($000) $3,442 Avg Close — Range —
Q3 2016
Shares 134,815 Value ($000) $3,369 Avg Close — Range —
Q2 2016
Shares 133,515 Value ($000) $2,895 Avg Close — Range —
Q1 2016
Shares 133,976 Value ($000) $2,008 Avg Close — Range —
Q4 2015
Shares 117,165 Value ($000) $2,567 Avg Close — Range —
Q3 2015
Shares 115,296 Value ($000) $1,818 Avg Close — Range —
Q2 2015
Shares 115,496 Value ($000) $1,650 Avg Close — Range —
Q1 2015
Shares 111,999 Value ($000) $1,938 Avg Close — Range —
Q4 2014
Shares 113,899 Value ($000) $2,042 Avg Close — Range —
Q3 2014
Shares 113,414 Value ($000) $1,489 Avg Close — Range —
Q2 2014
Shares 112,170 Value ($000) $1,612 Avg Close — Range —
Q1 2014
Shares 108,570 Value ($000) $1,383 Avg Close — Range —
Q4 2013
Shares 108,070 Value ($000) $1,081 Avg Close — Range —
Q3 2013
Shares 107,470 Value ($000) $1,414 Avg Close — Range —
Q2 2013
Shares 104,096 Value ($000) $1,486 Avg Close — Range —
Q1 2013
Shares 89,849 Value ($000) $1,013 Avg Close — Range —