NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

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

Q4 2018
Shares 115,705 Value ($000) $3,311 Avg Close — Range —
Q3 2018
Shares 115,260 Value ($000) $3,215 Avg Close — Range —
Q2 2018
Shares 111,945 Value ($000) $3,123 Avg Close — Range —
Q1 2018
Shares 112,609 Value ($000) $2,799 Avg Close — Range —
Q4 2017
Shares 111,744 Value ($000) $2,708 Avg Close — Range —
Q3 2017
Shares 192,933 Value ($000) $5,325 Avg Close — Range —
Q2 2017
Shares 598,671 Value ($000) $15,009 Avg Close — Range —
Q1 2017
Shares 772,334 Value ($000) $21,346 Avg Close — Range —
Q4 2016
Shares 831,476 Value ($000) $21,793 Avg Close — Range —
Q3 2016
Shares 857,861 Value ($000) $21,438 Avg Close — Range —
Q2 2016
Shares 1,186,242 Value ($000) $19,598 Avg Close — Range —
Q1 2016
Shares 928,080 Value ($000) $13,911 Avg Close — Range —
Q4 2015
Shares 847,875 Value ($000) $18,576 Avg Close — Range —
Q3 2015
Shares 833,098 Value ($000) $13,137 Avg Close — Range —
Q2 2015
Shares 1,465,214 Value ($000) $20,930 Avg Close — Range —
Q1 2015
Shares 1,565,758 Value ($000) $27,087 Avg Close — Range —
Q4 2014
Shares 2,650,064 Value ($000) $47,516 Avg Close — Range —
Q3 2014
Shares 3,632,201 Value ($000) $47,690 Avg Close — Range —
Q2 2014
Shares 3,685,063 Value ($000) $52,954 Avg Close — Range —
Q1 2014
Shares 4,040,088 Value ($000) $51,470 Avg Close — Range —
Q4 2013
Shares 3,834,430 Value ($000) $38,344 Avg Close — Range —
Q3 2013
Shares 3,417,280 Value ($000) $44,971 Avg Close — Range —
Q2 2013
Shares 3,577,244 Value ($000) $51,083 Avg Close — Range —