Other4

CoreWeave, Inc.

Total Value

$765.0M

Filing Date

Sep 18, 2026

1 transactions

Trade Summary

On Sep 18, 2026, Magnetar Financial LLC, 10% Owner, reported $765.0M of CoreWeave, Inc. (CRWV) across 1 transactions. The filing covers company securities and reflects balanced net activity of $0. Reported prices ranged from $75.00 to $180.00. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.

Insider Information

Name: Magnetar Financial LLC
Role: 10% Owner
Location: EVANSTON, IL

Filing Details

Filing Date: Sep 18, 2026
Transaction Date: Sep 18, 2026
Accession Number: 0001104659-26-109005
Form Type: 4

Derivative Transactions

Date	Security	Shares	Exercise Price	Type	Value
Sep 18, 2026	CRWV derivative	881,551	$180.00	Expiration	$158.7M
Sep 18, 2026	CRWV derivative	881,551	$75.00	Expiration	$66.1M
Sep 18, 2026	CRWV derivative	115,575	$180.00	Expiration	$20.8M
Sep 18, 2026	CRWV derivative	115,575	$75.00	Expiration	$8.7M
Sep 18, 2026	CRWV derivative	11,949	$180.00	Expiration	$2.2M
Sep 18, 2026	CRWV derivative	11,949	$75.00	Expiration	$896.2K
Sep 18, 2026	CRWV derivative	257,634	$180.00	Expiration	$46.4M
Sep 18, 2026	CRWV derivative	257,634	$75.00	Expiration	$19.3M
Sep 18, 2026	CRWV derivative	353,703	$180.00	Expiration	$63.7M
Sep 18, 2026	CRWV derivative	353,703	$75.00	Expiration	$26.5M
Sep 18, 2026	CRWV derivative	443,363	$180.00	Expiration	$79.8M
Sep 18, 2026	CRWV derivative	443,363	$75.00	Expiration	$33.3M
Sep 18, 2026	CRWV derivative	100,176	$180.00	Expiration	$18.0M
Sep 18, 2026	CRWV derivative	100,176	$75.00	Expiration	$7.5M
Sep 18, 2026	CRWV derivative	377,144	$180.00	Expiration	$67.9M
Sep 18, 2026	CRWV derivative	377,144	$75.00	Expiration	$28.3M
Sep 18, 2026	CRWV derivative	232,434	$180.00	Expiration	$41.8M
Sep 18, 2026	CRWV derivative	232,434	$75.00	Expiration	$17.4M
Sep 18, 2026	CRWV derivative	187,241	$180.00	Expiration	$33.7M
Sep 18, 2026	CRWV derivative	187,241	$75.00	Expiration	$14.0M
Sep 18, 2026	CRWV derivative	39,230	$180.00	Expiration	$7.1M
Sep 18, 2026	CRWV derivative	39,230	$75.00	Expiration	$2.9M

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Footnotes

(F1)In connection with the expiration of a call option and a put option entered into on August 18, 2025, as part of a collar arrangement, both options expired unexercised and for no value on September 18, 2026, as the closing price of the Class A Common Stock on such date was between the call strike price and the put strike price.
(F2)Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, 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 DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
(F3)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.
(F4)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.
(F5)These securities are held directly by CW Opportunity LLC.
(F6)These securities are held directly by Magnetar Alpha Star Fund LLC.
(F7)These securities are held directly by Magnetar Capital Master Fund, Ltd.
(F8)These securities are held directly by Magnetar Constellation Master Fund, Ltd.
(F9)These securities are held directly by Magnetar Lake Credit Fund LLC.
(F10)These securities are held directly by Magnetar Longhorn Fund LP.
(F11)These securities are held directly by Magnetar SC Fund Ltd.
(F12)These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities).
(F13)These securities are held directly by Magnetar Xing He Master Fund Ltd.
(F14)These securities are held directly by Purpose Alternative Credit Fund - F LLC.
(F15)These securities are held directly by Purpose Alternative Credit Fund - T LLC.
(F16)Expiration of a long derivative security for no value, transaction code "K" only.

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
Estimated average burden
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

60201

(City)

(State)

(Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
09/18/2026

4. If Amendment, Date of 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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			881,551	09/18/2026	09/18/2026	Class A Common Stock	881,551	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			881,551	09/18/2026	09/18/2026	Class A Common Stock	881,551	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			115,575	09/18/2026	09/18/2026	Class A Common Stock	115,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			115,575	09/18/2026	09/18/2026	Class A Common Stock	115,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			11,949	09/18/2026	09/18/2026	Class A Common Stock	11,949	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			11,949	09/18/2026	09/18/2026	Class A Common Stock	11,949	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			257,634	09/18/2026	09/18/2026	Class A Common Stock	257,634	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			257,634	09/18/2026	09/18/2026	Class A Common Stock	257,634	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			353,703	09/18/2026	09/18/2026	Class A Common Stock	353,703	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			353,703	09/18/2026	09/18/2026	Class A Common Stock	353,703	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			443,363	09/18/2026	09/18/2026	Class A Common Stock	443,363	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			443,363	09/18/2026	09/18/2026	Class A Common Stock	443,363	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			100,176	09/18/2026	09/18/2026	Class A Common Stock	100,176	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			100,176	09/18/2026	09/18/2026	Class A Common Stock	100,176	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			377,144	09/18/2026	09/18/2026	Class A Common Stock	377,144	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹²⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			377,144	09/18/2026	09/18/2026	Class A Common Stock	377,144	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹²⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			232,434	09/18/2026	09/18/2026	Class A Common Stock	232,434	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹³⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			232,434	09/18/2026	09/18/2026	Class A Common Stock	232,434	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹³⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			187,241	09/18/2026	09/18/2026	Class A Common Stock	187,241	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁴⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			187,241	09/18/2026	09/18/2026	Class A Common Stock	187,241	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁴⁾
Call option (obligation to sell)	$180	09/18/2026		E/K⁽¹⁾			39,230	09/18/2026	09/18/2026	Class A Common Stock	39,230	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁵⁾
Put option (right to sell)	$75	09/18/2026		E/K⁽¹⁾⁽¹⁶⁾			39,230	09/18/2026	09/18/2026	Class A Common Stock	39,230	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁵⁾

1. Name and Address of Reporting Person^*

Magnetar Financial LLC

(Last)

(First)

(Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON

60201

(City)

(State)

(Zip)

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

60201

(City)

(State)

(Zip)

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

60201

(City)

(State)

(Zip)

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

60201

(City)

(State)

(Zip)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. In connection with the expiration of a call option and a put option entered into on August 18, 2025, as part of a collar arrangement, both options expired unexercised and for no value on September 18, 2026, as the closing price of the Class A Common Stock on such date was between the call strike price and the put strike price.

2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, 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 DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (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 administrative 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 CW Opportunity LLC.

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

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

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

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

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

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

12. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities).

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

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

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

16. Expiration of a long derivative security for no value, transaction code "K" only.

	/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	09/18/2026
	/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	09/18/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC	09/18/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	09/18/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Form 4 as rendered by the SEC from accession 0001104659-26-109005.

CoreWeave, Inc.

Trade Summary

Company Information

Insider Information

Filing Details

Derivative Transactions

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Footnotes

SEC Form 4

SEC Filing

SEC Form 4