HORIZON PHARMA INC

CUSIP: 44047T109 Class: COM

CASTLEARK MANAGEMENT LLC's Holding History (CIK: 0001106832)

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

Q3 2014
Shares 710,928 Value ($000) $10,749 Avg Close — Range —
Q2 2014
Shares 667,503 Value ($000) $10,560 Avg Close — Range —
Q1 2014
Shares 710,928 Value ($000) $10,749 Avg Close — Range —
Q4 2013
Shares 500,258 Value ($000) $3,812 Avg Close — Range —