X0306 4 2016-02-26 0 0001631650 Aimmune Therapeutics, Inc. AIMT 0001648886 Elfont Robert Myles C/O AIMMUNE THERAPEUTICS, INC. 8000 MARINA BOULEVARD, SUITE 300 BRISBANE CA 94005-1884 0 1 0 0 Chief Medical Officer Common Stock, $0.0001 par value 299002 D Stock Option (right to buy) 16.93 2016-02-26 4 A 0 80000 0.00 A 2026-02-26 Common Stock 80000 80000 D A portion of these shares is subject to a right of repurchase held by the Issuer. The shares subject to the option will vest and become exercisable as to one-forty-eighth (1/48th) of the total number of shares subject to the option in successive, equal monthly installments measured from February 26, 2016, subject to the Reporting Person's continued service relationship with the Issuer on each such vesting date. /s/ Warren L. DeSouza, as Attorney-in-Fact for Robert Myles Elfont 2016-02-26