OREXIGEN THERAPEUTICS INC

CUSIP: 686164104 Class: COMMON STOCK

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

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

Q2 2014
Shares 374,114 Value ($000) $2,312 Avg Close — Range —
Q1 2014
Shares 384,279 Value ($000) $2,498 Avg Close — Range —
Q3 2013
Shares 422,511 Value ($000) $2,590 Avg Close — Range —
Q2 2013
Shares 332,141 Value ($000) $1,941 Avg Close — Range —