Sec Form 4 Filing - ENRIGHT PATRICK G @ Aimmune Therapeutics, Inc. - 2017-05-25

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person ENRIGHT PATRICK G 2. Issuer Name and Ticker or Trading Symbol Aimmune Therapeutics, Inc. [ AIMT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O LONGITUDE CAPITAL PARTNERS II, LLC, 800 EL CAMINO REAL, SUITE 220 3. Date of Earliest Transaction (MM/DD/YY) 05/25/2017 (Street) MENLO PARK, CA94025 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, $0.0001 par value 6,013,134 I By: Longitude Venture Partners II, L.P. ( 1 ) Common Stock, $0.0001 par value 7,276 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (right to buy) $ 18.26 05/25/2017 A 17,500 ( 2 ) 05/25/2027 Common Stock 17,500 $ 0 17,500 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ENRIGHT PATRICK G C/O LONGITUDE CAPITAL PARTNERS II, LLC 800 EL CAMINO REAL, SUITE 220 MENLO PARK, CA94025 X Signatures /s/ Douglas T. Sheehy, as Attorney-in-Fact for Patrick G. Enright 05/30/2017 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares are held by Longitude Venture Partners II, L.P. ("Longitude Venture II"). Longitude Capital Partners II, LLC ("Longitude Capital II") is the general partner of Longitude Venture II and may be deemed to have sole voting, investment and dispositive power over the shares held by Longitude Venture II. Patrick G. Enright is a managing member of Longitude Capital II and in his capacity as such may be deemed to exercise shared voting and investment power over the shares held by Longitude Venture II. Mr. Enright disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. ( 2 )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.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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