NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

GSA CAPITAL PARTNERS LLP's Holding History (CIK: 0001362033)

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

Q3 2018
Shares 10,612 Value ($000) $296 Avg Close — Range —
Q4 2017
Shares 28,300 Value ($000) $686 Avg Close — Range —
Q1 2017
Shares 98,200 Value ($000) $2,635 Avg Close — Range —
Q4 2016
Shares 71,670 Value ($000) $1,878 Avg Close — Range —
Q3 2016
Shares 65,236 Value ($000) $1,630 Avg Close — Range —
Q2 2016
Shares 40,426 Value ($000) $876 Avg Close — Range —
Q1 2016
Shares 20,380 Value ($000) $305 Avg Close — Range —
Q2 2015
Shares 12,111 Value ($000) $173 Avg Close — Range —