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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Kayyem Jon Faiz
  2. Issuer Name and Ticker or Trading Symbol
Inhibrx Biosciences, Inc. [INXB] 		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 INHIBRX BIOSCIENCES, INC., 11025 NORTH TORREY PINES ROAD, SUITE 140		 3. Date of Earliest Transaction (Month/Day/Year)
05/29/2024
(Street)

LA JOLLA, CA 92037		 4. If Amendment, Date 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
(City)
(State)
(Zip)
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 05/29/2024   A   806,075 A (1) 806,075 I By The Jon F. Kayyem and Paige Gates-Kayyem Family Trust (2)
Common Stock 05/29/2024   A   6,250 A (1) 6,250 I By Child A (3)
Common Stock 05/29/2024   A   6,250 A (1) 6,250 I By Child B (4)

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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 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) $ 15.86 05/30/2024(5)   A   30,000     (6) 05/30/2034 Common Stock 30,000 $ 0 30,000 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Kayyem Jon Faiz
C/O INHIBRX BIOSCIENCES, INC.
11025 NORTH TORREY PINES ROAD, SUITE 140
LA JOLLA, CA 92037		   X      

Signatures

 /s/ Kelly D. Deck, Chief Financial Officer of Inhibrx Biosciences, Inc., as attorney-in-fact   05/30/2024
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) The transactions reported herein are the result of the consummation on May 29, 2024 of the distribution by Inhibrx, Inc. of 92% of the issued and outstanding shares of common stock of its subsidiary, Inhibrx Biosciences, Inc. (the "Issuer"), to holders of shares of Inhibrx, Inc.'s common stock as of the distribution record date of May 17, 2024, on a pro rata basis, at a ratio of one share of the Company's common stock for every four shares of Inhibrx, Inc.'s issued and outstanding common stock held on the distribution record date. These transactions are voluntarily reported notwithstanding the exemption provided by Rule 16a-9.
(2) These securities are directly owned by The Jon F. Kayyem and Paige Gates-Kayyem Family Trust. Jon Faiz Kayyem is the trustee of The Jon F. Kayyem and Paige Gates-Kayyem Family Trust and he disclaims beneficial ownership of these securities, except to the extent of any indirect pecuniary interest in his distributive shares therein.
(3) These securities are held in a custodial account managed by the reporting person for the benefit of the reporting person's minor child, Child A. The reporting person disclaims beneficial ownership of these securities, except to the extent of any indirect pecuniary interest in his distributive shares therein.
(4) These securities are held in a custodial account managed by the reporting person for the benefit of the reporting person's minor child, Child B. The reporting person disclaims beneficial ownership of these securities, except to the extent of any indirect pecuniary interest in his distributive shares therein.
(5) This stock option was granted following the consummation of the merger of Inhibrx, Inc. with a wholly owned indirect subsidiary of Sanofi.
(6) This stock option will be fully exercisable on May 30, 2025, subject to the reporting person?s continued service through such date.

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