AVEXIS INC

CUSIP: 05366U100 Class: Common equity shares

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q1 2018
Shares 174,810 Value ($000) $21,603 Avg Close — Range —
Q4 2017
Shares 401,350 Value ($000) $44,417 Avg Close — Range —
Q3 2017
Shares 409,000 Value ($000) $39,563 Avg Close — Range —