NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q1 2018
Shares 304,027 Value ($000) $7,558 Avg Close — Range —
Q4 2017
Shares 427,908 Value ($000) $10,368 Avg Close — Range —
Q3 2017
Shares 497,710 Value ($000) $13,737 Avg Close — Range —
Q2 2017
Shares 920,998 Value ($000) $23,089 Avg Close — Range —
Q1 2017
Shares 590,275 Value ($000) $15,837 Avg Close — Range —
Q4 2016
Shares 842,552 Value ($000) $22,083 Avg Close — Range —
Q3 2016
Shares 974,417 Value ($000) $24,351 Avg Close — Range —
Q2 2016
Shares 1,017,605 Value ($000) $22,062 Avg Close — Range —
Q1 2016
Shares 918,396 Value ($000) $13,767 Avg Close — Range —
Q4 2015
Shares 1,359,898 Value ($000) $29,796 Avg Close — Range —
Q3 2015
Shares 1,369,584 Value ($000) $21,598 Avg Close — Range —
Q2 2015
Shares 1,249,709 Value ($000) $17,852,093 Avg Close — Range —
Q1 2015
Shares 809,858 Value ($000) $14,010,544 Avg Close — Range —
Q4 2014
Shares 793,409 Value ($000) $14,225,823 Avg Close — Range —
Q3 2014
Shares 91,841 Value ($000) $1,206 Avg Close — Range —
Q2 2014
Shares 94,371 Value ($000) $1,356 Avg Close — Range —
Q1 2014
Shares 1,600,226 Value ($000) $20,386,879 Avg Close — Range —
Q4 2013
Shares 1,863,086 Value ($000) $18,630,860 Avg Close — Range —
Q3 2013
Shares 1,881,416 Value ($000) $24,759,434 Avg Close — Range —
Q2 2013
Shares 2,068,866 Value ($000) $29,543,406 Avg Close — Range —