Sec Form 4 Filing - DOBMEIER ERIC @ CHINOOK THERAPEUTICS, INC. - 2023-08-11

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 DOBMEIER ERIC 2. Issuer Name and Ticker or Trading Symbol CHINOOK THERAPEUTICS, INC. [ KDNY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President, CEO (Last) (First) (Middle) C/O CHINOOK THERAPEUTICS, INC., 400 FAIRVIEW AVE. NO., 9TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 08/11/2023 (Street) SEATTLE, WA98109 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 08/11/2023 D 301,138 D 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) $ 0.35 08/11/2023 D 353,358 ( 2 ) 06/05/2029 Common Stock 353,358 $ 39.65 0 D Stock Option (Right to Buy) $ 0.42 08/11/2023 D 313,555 ( 3 ) 03/17/2030 Common Stock 313,555 $ 39.58 0 D Stock Option (Right to Buy) $ 14.77 08/11/2023 D 271,647 ( 4 ) 10/05/2030 Common Stock 271,647 $ 25.23 0 D Stock Option (Right to Buy) $ 15.14 08/11/2023 D 178,600 ( 5 ) 02/09/2031 Common Stock 178,600 $ 24.86 0 D Stock Option (Right to Buy) $ 12.9 08/11/2023 D 300,000 ( 6 ) 01/30/2032 Common Stock 300,000 $ 27.1 0 D Stock Option (Right to Buy) $ 25.27 08/11/2023 D 255,150 ( 7 ) 01/30/2033 Common Stock 255,150 $ 14.73 0 D Restricted Stock Units ( 8 ) 08/11/2023 D 30,797 ( 9 ) ( 9 ) Common Stock 30,797 ( 9 ) 0 D Restricted Stock Units ( 8 ) 08/11/2023 D 20,248 ( 10 ) ( 10 ) Common Stock 20,248 ( 10 ) 0 D Restricted Stock Units ( 8 ) 08/11/2023 D 50,001 ( 11 ) ( 11 ) Common Stock 50,001 ( 11 ) 0 D Restricted Stock Units ( 8 ) 08/11/2023 D 64,050 ( 12 ) ( 12 ) ( 12 ) Common Stock 64,050 ( 12 ) 0 D Restricted Stock Units ( 8 ) 08/11/2023 D 11,300 ( 13 ) ( 13 ) Common Stock 11,300 ( 13 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other DOBMEIER ERIC C/O CHINOOK THERAPEUTICS, INC. 400 FAIRVIEW AVE. NO., 9TH FLOOR SEATTLE, WA98109 X President, CEO Signatures /s/ Kirk Schumacher, Attorney-in-Fact 08/11/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The reported securities were disposed of pursuant to the Merger Agreement (defined in the Remarks below). Upon effectiveness of the Merger (defined in the Remarks below), in exchange for each share of the Issuer's Common Stock, the reporting person received: (i) $40.00 in cash, without interest and less applicable withholding taxes; and (ii) one contractual contingent value right (each, a "CVR"), entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement (the "Contingent Value Rights Agreement") entered into concurrent with completion of the Merger. ( 2 )This stock option award, which provided for 25% of the award to vest on April 1, 2020 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 3 )This stock option award, which provided for 25% of the award to vest on March 6, 2021 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 4 )This stock option award, which provided for 25% of the award to vest on October 6, 2021 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 5 )This stock option award, which provided for 25% of the award to vest on February 10, 2022 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 6 )This stock option award, which provided for 25% of the award to vest on January 31, 2023 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 7 )This stock option award, which provided for 25% of the award to vest on January 31, 2024 and ratable vesting in 36 additional monthly installments thereafter, became fully vested and was canceled upon effectiveness of the Merger, and was converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such option, (i) a cash payment representing the excess, if any, of the per share merger consideration ($40.00 per share) over the per share exercise price for such option, without interest, and (ii) one CVR, entitling the reporting person to additional cash payments upon the achievement of certain future business milestones pursuant to the Contingent Value Rights Agreement entered into concurrent with the completion of the Merger, in each case subject to applicable withholding taxes. ( 8 )When granted, each restricted stock unit ("RSU") represented a contingent right to receive one share of the Issuer's Common Stock upon settlement. ( 9 )When granted, the RSU award provided for ratable vesting in annual installments of one-third beginning on October 6, 2021. Pursuant to the Merger Agreement, at the effective time of the Merger, the RSU award was cancelled and converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such RSU, (i) a cash payment equal to $40.00 (without interest and subject to any applicable tax withholding), and (ii) one CVR. ( 10 )When granted, the RSU award provided for ratable vesting in annual installments of one-third beginning on February 10, 2022. Pursuant to the Merger Agreement, at the effective time of the Merger, the RSU award was cancelled and converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such RSU, (i) a cash payment equal to $40.00 (without interest and subject to any applicable tax withholding), and (ii) one CVR. ( 11 )When granted, the RSU award provided for ratable vesting in annual installments of one-third beginning on January 31, 2023. Pursuant to the Merger Agreement, at the effective time of the Merger, the RSU award was cancelled and converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such RSU, (i) a cash payment equal to $40.00 (without interest and subject to any applicable tax withholding), and (ii) one CVR. ( 12 )When granted, the RSU award provided for ratable vesting in annual installments of one-third beginning on January 31, 2024. Pursuant to the Merger Agreement, at the effective time of the Merger, the RSU award was cancelled and converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such RSU, (i) a cash payment equal to $40.00 (without interest and subject to any applicable tax withholding), and (ii) one CVR. ( 13 )When granted, the RSU award provided for the vesting of restricted stock units for shares of the Issuer's Common Stock contingent upon the achievement of certain performance-based vesting conditions. Pursuant to the Merger Agreement, at the effective time of the Merger, the performance-based RSU award was cancelled and converted into the right to receive, with respect to each share of the Issuer's Common Stock underlying such RSU, (i) a cash payment equal to $40.00 (without interest and subject to any applicable tax withholding), and (ii) one CVR.

Remarks: The reported securities were disposed of by the reporting person pursuant to the terms of the Agreement and Plan of Merger (the "Merger Agreement"), dated as of June 11, 2023, by and among Novartis AG, a company organized under the laws of Switzerland ("Parent"), Cherry Merger Sub Inc., a Delaware corporation and an indirect wholly owned subsidiary of Parent ("Merger Sub"), and the Issuer, which was previously disclosed by the Issuer on its Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission on June 12, 2023 (File No. 001-37345). In connection with the closing of the transactions contemplated by the Merger Agreement, on August 11, 2023, Merger Sub merged (the "Merger") with and into the Issuer, with the Issuer surviving as a wholly-owned subsidiary of Parent.

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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