BONANZA CREEK ENERGY INC

CUSIP: 097793103 Class: COMMON STOCK

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

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

Q3 2014
Shares 73,833 Value ($000) $4,201 Avg Close — Range —
Q2 2014
Shares 39,807 Value ($000) $2,277 Avg Close — Range —
Q1 2014
Shares 22,247 Value ($000) $988 Avg Close — Range —
Q4 2013
Shares 154,225 Value ($000) $6,704 Avg Close — Range —
Q3 2013
Shares 281,114 Value ($000) $13,567 Avg Close — Range —
Q2 2013
Shares 369,917 Value ($000) $13,117 Avg Close — Range —