NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

Calamos Advisors LLC's Holding History (CIK: 0001316507)

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

Q1 2016
Shares 21,550 Value ($000) $323 Avg Close — Range —
Q4 2015
Shares 25,200 Value ($000) $552 Avg Close — Range —
Q3 2015
Shares 32,700 Value ($000) $516 Avg Close — Range —
Q2 2015
Shares 17,700 Value ($000) $253 Avg Close — Range —
Q1 2015
Shares 230,332 Value ($000) $3,985 Avg Close — Range —
Q4 2014
Shares 230,332 Value ($000) $4,130 Avg Close — Range —