X0306 4 2019-05-23 0 0001631650 Aimmune Therapeutics, Inc. AIMT 0001648895 Seltzer Stacey Denenberg C/O AIMMUNE THERAPEUTICS, INC. 8000 MARINA BOULEVARD, SUITE 300 BRISBANE CA 94005-1884 1 0 0 0 Common Stock, $0.0001 par value 2019-05-23 4 A 0 6442 0.00 A 10221 D Stock Option (right to buy) 19.90 2019-05-23 4 A 0 11432 0.00 A 2029-05-23 Common Stock 11432 11432 D These shares represent restricted stock units ("RSUs") and will be settled in common stock upon vesting. The RSUs vest on the earlier of (i) the first anniversary of the grant date or (ii) the date of the 2020 Annual Meeting of the Issuer's stockholders, assuming continuous service as a director until such vesting date. 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 2020 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 Stacey D. Seltzer 2019-05-28