HORIZON PHARMA INC

CUSIP: 44047T109 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q2 2014
Shares 663,842 Value ($000) $10,502 Avg Close — Range —
Q1 2014
Shares 76,512 Value ($000) $1,157 Avg Close — Range —
Q4 2013
Shares 23,857 Value ($000) $182 Avg Close — Range —