FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person *
Kauffman Michael

(Last) (First) (Middle)
C/O KEZAR LIFE SCIENCES, INC.
4000 SHORELINE COURT, SUITE 300

(Street)
SOUTH SAN FRANCISCO CA 94080

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Kezar Life Sciences, Inc. [ KZR ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X Director 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 05/11/2026   U (1) (2)   6,369 D (1) 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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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) $ 59.1 05/11/2026   D     389   (3) 04/15/2028 Common Stock 389 $ 0 0 D  
Stock Option (right to buy) $ 26.4 05/11/2026   D     3,500   (3) 06/14/2033 Common Stock 3,500 $ 0 0 D  
Stock Option (right to buy) $ 6.7 05/11/2026   D     5,000   (4) 06/19/2034 Common Stock 5,000 $ 0 0 D  
Stock Option (right to buy) $ 4.46 05/11/2026   D     5,000   (4) 06/17/2035 Common Stock 5,000 $ 0 0 D  
Stock Option (right to buy) $ 22.8 05/11/2026   D     889   (3) 06/24/2029 Common Stock 889 $ 0 0 D  
Stock Option (right to buy) $ 22.8 05/11/2026   D     889   (3) 06/23/2030 Common Stock 889 $ 0 0 D  
Stock Option (right to buy) $ 22.8 05/11/2026   D     2,600   (3) 06/27/2031 Common Stock 2,600 $ 0 0 D  
Stock Option (right to buy) $ 22.8 05/11/2026   D     2,600   (3) 06/15/2032 Common Stock 2,600 $ 0 0 D  
Explanation of Responses:
1. In connection with the terms of an Agreement and Plan of Merger, dated as of March 30, 2026 (the "Merger Agreement"), by and among the Issuer, Aurinia Pharma U.S., Inc. ("Parent") and Parent's direct wholly owned subsidiary, Aurinia Merger Sub, Inc., ("Purchaser"), Purchaser completed a tender offer for shares of the Issuer's Common Stock. In exchange for each share, tendering stockholders received: (i) $6.955 per share in cash, without interest and less any applicable tax withholding (the "Cash Consideration"); plus (ii) one non-tradable contingent value right (each, a "CVR"), which represents the right to receive certain payments in cash in accordance with the terms and subject to the conditions of a contingent value rights agreement (the "CVR Agreement")
2. (continued from footnote 1) without interest and less any applicable tax withholding, upon the achievement of specified milestones in accordance with the terms and subject to the conditions of a CVR Agreement with Broadridge Corporate Issuer Solutions, LLC, as the rights agent. After completion of the tender offer, pursuant to the terms of the Merger Agreement, Purchaser merged with and into the Issuer (the "Merger"), effective as of May 11, 2026, with the Issuer continuing as the surviving entity and a wholly owned subsidiary of Parent (the "Effective Time").
3. Pursuant to the terms of the Merger Agreement, each option to acquire shares of Issuer common stock (the "Company Stock Options") that had a per share exercise price equal to or greater than the Cash Amount (an "Out-of-the-Money Option"), was automatically cancelled and ceased to exist at the Effective Time, and no consideration was delivered in exchange for such Out-of-the-Money Option.
4. Pursuant to the terms of the Merger Agreement, each Company Stock Option that had a per share exercise price less than the Cash Amount (an "In-the-Money Option") was automatically cancelled and converted at the Effective Time into the right to receive (A) an amount in cash, without interest, equal to the product obtained by multiplying (x) the excess of the Cash Amount over the exercise price per share underlying such Company Stock Option at the Effective Time by (y) the number of shares underlying such In-the-Money Option, subject to the terms and conditions specified in the Merger Agreement and (B) one CVR in respect of each share underlying such In-the-Money Option.
/s/ Marc Belsky, Attorney-in-Fact 05/11/2026
** Signature of Reporting Person Date
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