AMBIT BIOSCIENCES CORP

CUSIP: 02318X100 Class: COM

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

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

Q2 2014
Shares 40,000 Value ($000) $276 Avg Close — Range —
Q1 2014
Shares 57,708 Value ($000) $526 Avg Close — Range —
Q4 2013
Shares 60,000 Value ($000) $579 Avg Close — Range —