Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

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 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 * Magnetar Financial LLC 2. Issuer Name and Ticker or Trading Symbol CoreWeave, Inc. [CRWV] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 1603 ORRINGTON AVENUE, 13TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 09/10/2025 (Street) EVANSTON, IL 60201 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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

Call option (obligation to sell)

$200

09/10/2025

S/K(1)

177,116

06/18/2026

06/18/2026

Class A Common Stock

177,116

$1,948,276

177,116

I

Footnotes(2)(3)(4)(5)

Put option (right to sell)

$82.5

09/10/2025

P/K(1)

177,116

06/18/2026

06/18/2026

Class A Common Stock

177,116

$2,302,508

177,116

I

Footnotes(2)(3)(4)(5)

Call option (obligation to sell)

$200

09/10/2025

S/K(1)

109,158

06/18/2026

06/18/2026

Class A Common Stock

109,158

$1,200,738

109,158

I

Footnotes(2)(3)(4)(6)

Put option (right to sell)

$82.5

09/10/2025

P/K(1)

109,158

06/18/2026

06/18/2026

Class A Common Stock

109,158

$1,419,054

109,158

I

Footnotes(2)(3)(4)(6)

Call option (obligation to sell)

$200

09/10/2025

S/K(1)

87,934

06/18/2026

06/18/2026

Class A Common Stock

87,934

$967,274

87,934

I

Footnotes(2)(3)(4)(7)

Put option (right to sell)

$82.5

09/10/2025

P/K(1)

87,934

06/18/2026

06/18/2026

Class A Common Stock

87,934

$1,143,142

87,934

I

Footnotes(2)(3)(4)(7)

Call option (obligation to sell)

$200

09/10/2025

S/K(1)

18,424

06/18/2026

06/18/2026

Class A Common Stock

18,424

$202,664

18,424

I

Footnotes(2)(3)(4)(8)

Put option (right to sell)

$82.5

09/10/2025

P/K(1)

18,424

06/18/2026

06/18/2026

Class A Common Stock

18,424

$239,512

18,424

I

Footnotes(2)(3)(4)(8)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Magnetar Financial LLC 1603 ORRINGTON AVENUE 13TH FLOOR EVANSTON, IL 60201		X
Magnetar Capital Partners LP 1603 ORRINGTON AVENUE 13TH FLOOR EVANSTON, IL 60201		X
Supernova Management LLC 1603 ORRINGTON AVENUE 13TH FLOOR EVANSTON, IL 60201		X
Snyderman David J. 1603 ORRINGTON AVENUE 13TH FLOOR EVANSTON, IL 60201		X

Signatures

/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP, which is in turn the Sole Member of Magnetar Financial LLC		09/11/2025
**Signature of Reporting Person		Date
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP		09/11/2025
**Signature of Reporting Person		Date
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC		09/11/2025
**Signature of Reporting Person		Date
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman		09/11/2025
**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 entity holding the underlying shares of Class A common stock (the "Common Stock") of CoreWeave, Inc. entered into a collar arrangement pursuant to which such entity wrote a covered call option and purchased a put option. Only one of the options can be in-the-money on the expiration date, at which time the in-the-money option will be exercised and settled in shares and the other option will expire. If neither option is in-the-money on the expiration date, both options will expire.
(2)	Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC and the general partner of Magnetar Structured Credit Fund, LP (collectively, the "Magnetar Funds").
(3)	Magnetar Capital Partners LP ("Magnetar Capital Partners") is the sole member and parent holding company of Magnetar Financial. Supernova Management LLC ("Supernova Management") is the general partner of Magnetar Capital Partners. The manager of Supernova Management is David J. Snyderman, a citizen of the United States of America.
(4)	Each of the Magnetar Funds, Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaims beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein.
(5)	These securities are held directly by Magnetar Structured Credit Fund, LP.
(6)	These securities are held directly by Magnetar Xing He Master Fund Ltd.
(7)	These securities are held directly by Purpose Alternative Credit Fund - F LLC.
(8)	These securities are held directly by Purpose Alternative Credit Fund - T LLC.

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