X0306 4 2018-03-13 0 0001652923 AveXis, Inc. AVXS 0001289098 Kearney Terrence C C/O AVEXIS, INC. 2275 HALF DAY ROAD, SUITE 200 BANNOCKBURN IL 60015 1 0 0 0 Common Stock 2018-03-13 4 A 0 1106 0.00 A 1106 D Stock Option (Right to Buy) 133.80 2018-03-13 4 A 0 2905 0.00 A 2028-03-13 Common Stock 2905 2905 D These shares are represented by restricted stock units. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. The shares underlying this restricted stock award will vest on March 13, 2019, subject to the Reporting Person's continuous service with the Issuer on such date. This option shall vest and become exercisable on March 13, 2019, subject to the Reporting Person's continuous service with the Issuer on such date. /s/ Madison Jones, Attorney-in-Fact 2018-03-30