X0306 4 2017-05-25 0 0001631650 Aimmune Therapeutics, Inc. AIMT 0001643766 Behar Gregory C/O AIMMUNE THERAPEUTICS, INC. 8000 MARINA BOULEVARD, SUITE 300 BRISBANE CA 94005-1884 1 0 0 0 Stock Option (right to buy) 18.26 2017-05-25 4 A 0 17500 0.00 A 2027-05-25 Common Stock 17500 17500 D The shares subject to the option will vest and become exercisable as to 100% of the total number of shares subject to the option on the earlier of (i) the first anniversary of the grant date or (ii) the date of the 2018 Annual Meeting of the Issuer's stockholders, assuming continuous service as a director until such vesting date. /s/ Douglas T. Sheehy, as Attorney-in-Fact for Gregory Behar 2017-05-30