X0306 4 2017-02-24 0 0001631650 Aimmune Therapeutics, Inc. AIMT 0001664251 Barrowcliffe Susan E. AIMMUNE THERAPEUTICS, INC. 8000 MARINA BOULEVARD, SUITE 300 BRISBANE CA 94005-1884 0 1 0 0 General Manager, Europe Stock Option (right to buy) 19.63 2017-02-24 4 A 0 90000 0.00 A 2027-02-24 Common Stock 90000 90000 D 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 24, 2017, 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 Susan E. Barrowcliffe 2017-02-24