NANOSTRING TECHNOLOGIES INC

CUSIP: 63009R109 Class: Common Stock

ARDSLEY ADVISORY PARTNERS LP's Holding History (CIK: 0000900529)

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

Q4 2014
Shares 25,000 Value ($000) $348 Avg Close — Range —
Q3 2014
Shares 15,000 Value ($000) $164 Avg Close — Range —