AVEXIS INC

CUSIP: 05366U100 Class: Common equity shares

RA CAPITAL MANAGEMENT, L.P.'s Holding History (CIK: 0001346824)

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

Q1 2018
Shares 1,028,289 Value ($000) $127,076 Avg Close — Range —
Q4 2017
Shares 1,171,278 Value ($000) $129,625 Avg Close — Range —
Q3 2017
Shares 1,238,181 Value ($000) $119,769 Avg Close — Range —
Q2 2017
Shares 1,310,046 Value ($000) $107,633 Avg Close — Range —
Q1 2017
Shares 1,625,211 Value ($000) $123,565 Avg Close — Range —
Q4 2016
Shares 1,890,796 Value ($000) $90,248 Avg Close — Range —
Q3 2016
Shares 1,732,274 Value ($000) $71,387 Avg Close — Range —
Q2 2016
Shares 1,339,382 Value ($000) $50,923 Avg Close — Range —
Q1 2016
Shares 1,361,582 Value ($000) $37,089 Avg Close — Range —