Sec Form 4 Filing - Jerel Davis @ ADURO BIOTECH, INC. - 2020-10-05

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 Jerel Davis 2. Issuer Name and Ticker or Trading Symbol ADURO BIOTECH, INC. [ KDNY] 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 CHINOOK THERAPEUTICS, INC., 1600 FAIRVIEW AVE. E. 3. Date of Earliest Transaction (MM/DD/YY) 10/05/2020 (Street) SEATTLE, WA98102 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 10/05/2020 A 730,470 A 730,470 D Common Stock 10/05/2020 A 4,733,023 ( 2 ) A 4,733,023 I See footnote ( 2 ) ( 3 ) Common Stock 10/05/2020 A 722,247 ( 2 ) A 722,247 I See footnote ( 2 ) ( 4 ) Common Stock 10/05/2020 A 2,433,099 ( 2 ) A 2,433,099 I See footnote ( 2 ) ( 5 )

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) $ 14.77 10/06/2020 A 23,522 ( 6 ) 10/05/2030 Common Stock 23,522 $ 0 23,522 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Jerel Davis C/O CHINOOK THERAPEUTICS, INC. 1600 FAIRVIEW AVE. E. SEATTLE, WA98102 X Signatures /s/ Kirk Schumacher, Attorney-in-Fact 10/07/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares reported represent the number of shares of Issuer common stock received by the Reporting Person on the Effective Date in connection with merger of Chinook Therapeutics U.S., Inc. ("Private Chinook") into the Issuer. ( 2 )The Reporting Person is a managing director or a director of the ultimate general partner or general partner of Versant Venture Capital VII, L.P. ("Versant VII"), Versant Voyageurs I Parallel, L.P. ("Versant I Parallel"), and Versant Voyageurs I, L.P. ("Versant Voyageurs I"). This report shall not be deemed an admission that any of the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Exchange Act, or for any other purpose. ( 3 )These securities are held of record by Versant VII. Versant Ventures VII GP, L.P. ("Versant Ventures VII GP") is the general partner of Versant VII, and Versant Ventures VII GP-GP, LLC ("Versant Ventures VII GP-GP") is the general partner of Versant Ventures VII GP. Jerel Davis is a managing director of Versant Ventures VII GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant VII; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Jerel Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. ( 4 )These securities are held of record by Versant I Parallel. Versant Voyageurs I GP, L.P. ("Versant Voyageurs I GP") is the general partner of Versant I Parallel. Versant Ventures VI GP, L.P. ("Versant Ventures VI GP-GP") is the general partner of Versant Voyageurs I GP LP. Versant Ventures VI GP-GP is the general partner of Versant Ventures VI GP. Jerel Davis is a managing director of Versant Ventures VI GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant I Parallel; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Jerel Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. ( 5 )These securities are held of record by Versant Voyageurs I. Versant Voyageurs I GP Company is the general partner of Versant Voyageurs I. Jerel Davis is a director of Versant Voyageurs I GP Company and may be deemed to share voting and dispositive power over the shares held by Versant Voyageurs I; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Jerel Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. ( 6 )The stock option vests as of 1/36 of the total shares monthly beginning on November 6, 2020 until fully vested, subject to the ReportingPerson's provision of service to the Issuer on each 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).

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