[Form 4] CoreWeave, Inc. Insider Trading Activity

Rhea-AI Filing Summary

CoreWeave, Inc. large shareholder entities affiliated with Magnetar Financial LLC reported exercising derivative rights to purchase a total of 375,000 shares of Class A Common Stock at an exercise price of $40.00 per share on March 19, 2026.

The derivative securities, described as rights to purchase Class A shares, were exercised through multiple Magnetar-managed investment funds, and the corresponding non-derivative share positions were updated. Following these transactions, individual Magnetar funds continued to hold sizable indirect positions, including 22,100,199 shares in one fund as of that date.

Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman each report these holdings indirectly and disclaim beneficial ownership of CoreWeave shares except to the extent of their pecuniary interest, indicating the shares are held directly by various Magnetar-sponsored funds and vehicles.

SEC Form 4

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

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

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 for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Magnetar Financial LLC

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON ILLINOIS 60201

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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
Class A Common Stock	03/19/2026		X		179,250	A	$40	8,726,113	I	Footnotes(1)(2)(3)(4)
Class A Common Stock	03/19/2026		X		16,500	A	$40	8,898,243	I	Footnotes(1)(2)(3)(5)
Class A Common Stock	03/19/2026		X		51,375	A	$40	2,993,770	I	Footnotes(1)(2)(3)(6)
Class A Common Stock	03/19/2026		X		8,250	A	$40	862,025	I	Footnotes(1)(2)(3)(7)
Class A Common Stock	03/19/2026		X		119,625	A	$40	6,316,786	I	Footnotes(1)(2)(3)(8)
Class A Common Stock								5,502,483	I	Footnotes(1)(2)(3)(9)
Class A Common Stock								22,100,199	I	Footnotes(1)(2)(3)(10)
Class A Common Stock								1,973,782	I	Footnotes(1)(2)(3)(11)
Class A Common Stock								1,561,485	I	Footnotes(1)(2)(3)(12)
Class A Common Stock								299,512	I	Footnotes(1)(2)(3)(13)
Class A Common Stock								5,001,372	I	Footnotes(1)(2)(3)(14)
Class A Common Stock								1,175,441	I	Footnotes(1)(2)(3)(15)
Class A Common Stock								3,155,183	I	Footnotes(1)(2)(3)(16)

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
Right to Purchase	$40	03/19/2026		X			179,250	03/27/2025	03/27/2026	Class A Common Stock	179,250	$0	0	I	Footnotes(1)(2)(3)(4)
Right to Purchase	$40	03/19/2026		X			16,500	03/27/2025	03/27/2026	Class A Common Stock	16,500	$0	0	I	Footnotes(1)(2)(3)(5)
Right to Purchase	$40	03/19/2026		X			51,375	03/27/2025	03/27/2026	Class A Common Stock	51,375	$0	0	I	Footnotes(1)(2)(3)(6)
Right to Purchase	$40	03/19/2026		X			8,250	03/27/2025	03/27/2026	Class A Common Stock	8,250	$0	0	I	Footnotes(1)(2)(3)(7)
Right to Purchase	$40	03/19/2026		X			119,625	03/27/2025	03/27/2026	Class A Common Stock	119,625	$0	0	I	Footnotes(1)(2)(3)(8)

1. Name and Address of Reporting Person^*

Magnetar Financial LLC

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON ILLINOIS 60201

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Magnetar Capital Partners LP

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON ILLINOIS 60201

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Supernova Management LLC

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON ILLINOIS 60201

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Snyderman David J.

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON ILLINOIS 60201

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund 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").

2. 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.

3. 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.

4. These securities are held directly by Magnetar Structured Credit Fund, LP.

5. These securities are held directly by Magnetar Longhorn Fund LP.

6. These securities are held directly by Purpose Alternative Credit Fund - F LLC.

7. These securities are held directly by Purpose Alternative Credit Fund - T LLC.

8. These securities are held directly by Magnetar Lake Credit Fund LLC.

9. These securities are held directly by CW Opportunity 2 LP.

10. These securities are held directly by CW Opportunity LLC.

11. These securities are held directly by Longhorn Special Opportunities Fund LP.

12. These securities are held directly by Magnetar Alpha Star Fund LLC.

13. These securities are held directly by Magnetar Capital Master Fund, Ltd.

14. These securities are held directly by Magnetar Constellation Master Fund, Ltd.

15. These securities are held directly by Magnetar SC Fund Ltd.

16. These securities are held directly by Magnetar Xing He Master Fund Ltd.

	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative 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	03/20/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC, which is the General Partner of Magnetar Capital Partners LP	03/20/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC	03/20/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	03/20/2026
	** Signature of Reporting Person	Date
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).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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* Form 4: SEC 1474 (03-26)