NXSTAGE MEDICAL INC

CUSIP: 67072V103 Class: COMMON STOCK

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q2 2018
Shares 409,468 Value ($000) $11,424 Avg Close — Range —
Q1 2018
Shares 460,373 Value ($000) $11,445 Avg Close — Range —
Q4 2017
Shares 315,758 Value ($000) $7,651 Avg Close — Range —
Q3 2017
Shares 215,758 Value ($000) $5,955 Avg Close — Range —