HORIZON PHARMA INC

CUSIP: 44047T109 Class: COM

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q2 2014
Shares 190,470 Value ($000) $3,013 Avg Close — Range —
Q1 2014
Shares 198,470 Value ($000) $3,001 Avg Close — Range —
Q4 2013
Shares 197,703 Value ($000) $1,506 Avg Close — Range —
Q3 2013
Shares 193,438 Value ($000) $654 Avg Close — Range —
Q2 2013
Shares 188,750 Value ($000) $464 Avg Close — Range —