RECEPTOS INC

CUSIP: 756207106 Class: COMMON STOCK

Atika Capital Management LLC's Holding History (CIK: 0001599731)

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

Q2 2015
Shares 50,000 Value ($000) $9,503 Avg Close — Range —
Q1 2015
Shares 37,000 Value ($000) $6,101 Avg Close — Range —
Q4 2014
Shares 51,500 Value ($000) $6,309 Avg Close — Range —
Q3 2014
Shares 24,500 Value ($000) $1,522 Avg Close — Range —