Sec Form 4 Filing - ENRIGHT PATRICK G @ Aimmune Therapeutics, Inc. - 2020-10-10

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, 2740 SAND HILL ROAD, SECOND FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 10/10/2020 (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 10/10/2020 U 70,561 D $ 34.5 0 D Common Stock, $0.0001 par value 10/10/2020 U 91,697 D $ 34.5 0 I By: LCP2 ( 1 ) Common Stock, $0.0001 par value 10/13/2020 D 7,840 ( 2 ) ( 3 ) D $ 34.5 0 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) $ 0.14 10/13/2020 D 65,849 ( 4 ) ( 4 ) Common Stock 65,849 $ 34.36 0 D Stock Option (right to buy) $ 6.29 10/13/2020 D 52,421 ( 4 ) ( 4 ) Common Stock 52,421 $ 28.21 0 D Stock Option (right to buy) $ 15.4 10/13/2020 D 19,755 ( 4 ) ( 4 ) Common Stock 19,755 $ 19.1 0 D Stock Option (right to buy) $ 18.26 10/13/2020 D 17,500 ( 4 ) ( 4 ) Common Stock 17,500 $ 16.24 0 D Stock Option (right to buy) $ 32.79 10/13/2020 D 7,500 ( 4 ) ( 4 ) Common Stock 7,500 $ 1.71 0 D Stock Option (right to buy) $ 19.9 10/13/2020 D 11,432 ( 4 ) ( 4 ) Common Stock 11,432 $ 14.6 0 D Stock Option (right to buy) $ 17.11 10/13/2020 D 15,398 ( 4 ) ( 4 ) Common Stock 15,398 $ 17.39 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other ENRIGHT PATRICK G C/O LONGITUDE CAPITAL PARTNERS II, LLC 2740 SAND HILL ROAD, SECOND FLOOR MENLO PARK, CA94025 X Signatures /s/ Patrick G. Enright 10/14/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Reflects shares held by Longitude Capital Partners II, LLC ("LCP2"). The Reporting Person is a managing member of LCP2 and in his capacity as such may be deemed to share voting and investment power over the shares held by LCP2. The Reporting Person disclaims beneficial ownership over these securities and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose, except to the extent of his pecuniary interest therein. ( 2 )Disposed of to SPN MergerSub, Inc. ("Merger Sub"), which, pursuant to the Agreement and Plan of Merger, dated August 29, 2020, by and between the Issuer, Societes des Produits Nestle S.A., ("Nestle"), and Merger Sub (the "Merger Agreement"), commenced a tender offer to acquire any and all of the outstanding shares of the Issuer's common stock (other than those shares owned by Nestle and its affiliates) at a purchase price of $34.50 per share (the "Offer Price"). ( 3 )Pursuant to the Merger Agreement, each Issuer restricted stock unit ("RSU") that was outstanding immediately prior to the date and time at which the Merger became effective (the "Effective Time") vested in full, terminated, and was converted into the right to receive a cash payment equal to (i) the Offer Price multiplied by (ii) the number of shares of common stock subject to the RSU. ( 4 )Pursuant to the Merger Agreement, at the Effective Time, each stock option outstanding and unexercised immediately prior to the Effective Time vested in full, terminated and was converted into the right to receive a cash payment equal to the product of (i) the number of shares of common stock that were subject to such stock option immediately prior to the Effective Time and (ii) the excess, if any, of the Offer Price over the per share exercise price of such stock option.

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