AVEXIS INC

CUSIP: 05366U100 Class: Common equity shares

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

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

Q1 2018
Shares 40,000 Value ($000) $4,943 Avg Close — Range —
Q4 2017
Shares 40,300 Value ($000) $4,460 Avg Close — Range —
Q3 2017
Shares 41,000 Value ($000) $3,966 Avg Close — Range —
Q2 2017
Shares 36,500 Value ($000) $2,999 Avg Close — Range —