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) 10/09/2025 (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

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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
Forward sale contract (obligation to sell)	(1)(2)(18)	10/09/2025		J/K		24,297		(1)(2)(18)	(1)(2)(18)	Class A Common Stock	24,297	(1)(2)(18)	24,297	I	Footnotes(3)(4)(5)(6)
Forward sale contract (obligation to sell)	(1)(2)(19)	10/09/2025		J/K		110,400		(1)(2)(19)	(1)(2)(19)	Class A Common Stock	110,400	(1)(2)(19)	110,400	I	Footnotes(3)(4)(5)(7)
Forward sale contract (obligation to sell)	(1)(2)(20)	10/09/2025		J/K		14,474		(1)(2)(20)	(1)(2)(20)	Class A Common Stock	14,474	(1)(2)(20)	14,474	I	Footnotes(3)(4)(5)(8)
Forward sale contract (obligation to sell)	(1)(2)(21)	10/09/2025		J/K		1,496		(1)(2)(21)	(1)(2)(21)	Class A Common Stock	1,496	(1)(2)(21)	1,496	I	Footnotes(3)(4)(5)(9)
Forward sale contract (obligation to sell)	(1)(2)(22)	10/09/2025		J/K		32,265		(1)(2)(22)	(1)(2)(22)	Class A Common Stock	32,265	(1)(2)(22)	32,265	I	Footnotes(3)(4)(5)(10)
Forward sale contract (obligation to sell)	(1)(2)(23)	10/09/2025		J/K		44,296		(1)(2)(23)	(1)(2)(23)	Class A Common Stock	44,296	(1)(2)(23)	44,296	I	Footnotes(3)(4)(5)(11)
Forward sale contract (obligation to sell)	(1)(2)(24)	10/09/2025		J/K		55,525		(1)(2)(24)	(1)(2)(24)	Class A Common Stock	55,525	(1)(2)(24)	55,525	I	Footnotes(3)(4)(5)(12)
Forward sale contract (obligation to sell)	(1)(2)(25)	10/09/2025		J/K		12,545		(1)(2)(25)	(1)(2)(25)	Class A Common Stock	12,545	(1)(2)(25)	12,545	I	Footnotes(3)(4)(5)(13)
Forward sale contract (obligation to sell)	(1)(2)(26)	10/09/2025		J/K		47,231		(1)(2)(26)	(1)(2)(26)	Class A Common Stock	47,231	(1)(2)(26)	47,231	I	Footnotes(3)(4)(5)(14)
Forward sale contract (obligation to sell)	(1)(2)(27)	10/09/2025		J/K		29,109		(1)(2)(27)	(1)(2)(27)	Class A Common Stock	29,109	(1)(2)(27)	29,109	I	Footnotes(3)(4)(5)(15)
Forward sale contract (obligation to sell)	(1)(2)(28)	10/09/2025		J/K		23,449		(1)(2)(28)	(1)(2)(28)	Class A Common Stock	23,449	(1)(2)(28)	23,449	I	Footnotes(3)(4)(5)(16)
Forward sale contract (obligation to sell)	(1)(2)(29)	10/09/2025		J/K		4,913		(1)(2)(29)	(1)(2)(29)	Class A Common Stock	4,913	(1)(2)(29)	4,913	I	Footnotes(3)(4)(5)(17)

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		10/10/2025
**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		10/10/2025
**Signature of Reporting Person		Date
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC		10/10/2025
**Signature of Reporting Person		Date
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman		10/10/2025
**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 indicated number of shares of Class A common stock (the "Common Stock") of CoreWeave Inc. (the "Issuer") entered into a variable pre-paid forward sale contract with a third party counterparty. The contract obligates the entity to deliver to the counterparty up to the indicated number of shares on June 19, 2026 (the "Settlement Date"). The entity pledged the indicated number of shares, as reported in Column 5 (the "Pledged Shares"), to the counterparty to secure its obligations under the contract and retained voting and dividend rights in the Pledged Securities during the term of the pledge.
(2)	The number of shares deliverable to the counterparty on the Settlement Date is to be determined as follows: (a) if the price at the Nasdaq closing time on June 18, 2026 (the "Settlement Price") is less than or equal to $120.00 (the "Floor Price"), the entity will deliver all Pledged Shares; (b) if the Settlement Price is between the Floor Price and $190.00 (the "Cap Price"), the entity will deliver a number of shares having a value (based on the Settlement Price) equal to the number of Pledged Shares multiplied by the Floor Price; and (c) if the Settlement Price is greater than the Cap Price, the entity will deliver a number of shares having a value (based on the Settlement Price) equal to the number of Pledged Shares multiplied by the sum of the Settlement Price and the difference between Cap Price and the Floor Price.
(3)	Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
(4)	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 administrative manager of Supernova Management is David J. Snyderman, a citizen of the United States of America.
(5)	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.
(6)	These securities are held directly by CW Opportunity 2 LP.
(7)	These securities are held directly by CW Opportunity LLC.
(8)	These securities are held directly by Magnetar Alpha Star Fund LLC.
(9)	These securities are held directly by Magnetar Capital Master Fund, Ltd.
(10)	These securities are held directly by Magnetar Constellation Master Fund, Ltd.
(11)	These securities are held directly by Magnetar Lake Credit Fund LLC.
(12)	These securities are held directly by Magnetar Longhorn Fund LP.
(13)	These securities are held directly by Magnetar SC Fund Ltd.
(14)	These securities are held directly by Magnetar Structured Credit Fund, LP.
(15)	These securities are held directly by Magnetar Xing He Master Fund Ltd.
(16)	These securities are held directly by Purpose Alternative Credit Fund - F LLC.
(17)	These securities are held directly by Purpose Alternative Credit Fund - T LLC.
(18)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $2,815,527.81 on or about the date of entry into the contract.
(19)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $12,793,113.15 on or about the date of entry into the contract.
(20)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $1,677,242.03 on or about the date of entry into the contract.
(21)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $173,355.95 on or about the date of entry into the contract.
(22)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $3,738,856.85 on or about the date of entry into the contract.
(23)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $5,133,004.90 on or about the date of entry into the contract.
(24)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $6,434,217.47 on or about the date of entry into the contract.
(25)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $1,453,710.19 on or about the date of entry into the contract.
(26)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $5,473,111.66 on or about the date of entry into the contract.
(27)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $3,373,140.68 on or about the date of entry into the contract.
(28)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $2,717,261.87 on or about the date of entry into the contract.
(29)	In exchange for assuming the obligation referenced in footnotes 1 and 2, the entity received a cash payment from the counterparty in an aggregate amount of $569,316.71 on or about the date of entry into the contract.

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