RECEPTOS INC

CUSIP: 756207106 Class: COMMON STOCK

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

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

Q2 2015
Shares 75,193 Value ($000) $14,290 Avg Close — Range —
Q1 2015
Shares 69,247 Value ($000) $11,418 Avg Close — Range —
Q4 2014
Shares 76,232 Value ($000) $9,339 Avg Close — Range —
Q3 2014
Shares 131,397 Value ($000) $8,161 Avg Close — Range —
Q2 2014
Shares 192,456 Value ($000) $8,199 Avg Close — Range —
Q1 2014
Shares 86,846 Value ($000) $3,642 Avg Close — Range —
Q4 2013
Shares 61,996 Value ($000) $1,797 Avg Close — Range —
Q3 2013
Shares 77,362 Value ($000) $2,009 Avg Close — Range —
Q2 2013
Shares 62,492 Value ($000) $1,243 Avg Close — Range —