RECEPTOS INC

CUSIP: 756207106 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q2 2015
Shares 3,583 Value ($000) $681 Avg Close — Range —
Q1 2015
Shares 3,848 Value ($000) $635 Avg Close — Range —
Q4 2014
Shares 10,435 Value ($000) $1,278 Avg Close — Range —
Q3 2014
Shares 18,705 Value ($000) $1,162 Avg Close — Range —
Q2 2014
Shares 13,005 Value ($000) $554 Avg Close — Range —