X0306 4 2017-02-24 0 0001631650 Aimmune Therapeutics, Inc. AIMT 0001488637 Sheehy Douglas T. AIMMUNE THERAPEUTICS, INC. 8000 MARINA BOULEVARD, SUITE 300 BRISBANE CA 94005-1884 0 1 0 0 See Remarks Common Stock, $0.0001 par value 12000 D 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 Restricted stock units ("RSUs") scheduled to vest in full on April 4, 2017, subject to the continuous employment of the Reporting Person. Each restricted stock unit entitles the Reporting Person to receive one share of the common stock of the Issuer upon vesting. 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. General Counsel and Corporate Secretary /s/ Warren L. DeSouza, as Attorney in Fact for Douglas T. Sheehy 2017-02-24