Magnetar funds’ CoreWeave (CRWV) options collar lapses for no value

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

CoreWeave, Inc. large shareholders reported the expiration of an options collar on the company’s Class A Common Stock. Magnetar-affiliated funds had entered into paired call and put option positions on August 15, 2025 as part of a collar arrangement. According to the filing, on March 20, 2026 both the call options (obligations to sell) and the put options (rights to sell) expired unexercised and for no value because the stock’s closing price fell between the call and put strike prices. The options were held by various Magnetar funds, and Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman each disclaim beneficial ownership of the underlying shares except to the extent of any pecuniary interest.

03/20/2026 - 08:14 PM

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

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)
03/20/2026

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)
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)	$135	03/20/2026		E/K⁽¹⁾			171,757	03/20/2026	03/20/2026	Class A Common Stock	171,757	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			171,757	03/20/2026	03/20/2026	Class A Common Stock	171,757	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			171,756	03/20/2026	03/20/2026	Class A Common Stock	171,756	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			171,756	03/20/2026	03/20/2026	Class A Common Stock	171,756	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁵⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			251,428	03/20/2026	03/20/2026	Class A Common Stock	251,428	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			251,428	03/20/2026	03/20/2026	Class A Common Stock	251,428	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			251,429	03/20/2026	03/20/2026	Class A Common Stock	251,429	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			251,429	03/20/2026	03/20/2026	Class A Common Stock	251,429	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁶⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			154,956	03/20/2026	03/20/2026	Class A Common Stock	154,956	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			154,956	03/20/2026	03/20/2026	Class A Common Stock	154,956	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			154,956	03/20/2026	03/20/2026	Class A Common Stock	154,956	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			154,956	03/20/2026	03/20/2026	Class A Common Stock	154,956	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁷⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			66,783	03/20/2026	03/20/2026	Class A Common Stock	66,783	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			66,783	03/20/2026	03/20/2026	Class A Common Stock	66,783	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			66,784	03/20/2026	03/20/2026	Class A Common Stock	66,784	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			66,784	03/20/2026	03/20/2026	Class A Common Stock	66,784	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁸⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			295,575	03/20/2026	03/20/2026	Class A Common Stock	295,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			295,575	03/20/2026	03/20/2026	Class A Common Stock	295,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			295,575	03/20/2026	03/20/2026	Class A Common Stock	295,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			295,575	03/20/2026	03/20/2026	Class A Common Stock	295,575	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽⁹⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			124,828	03/20/2026	03/20/2026	Class A Common Stock	124,828	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			124,828	03/20/2026	03/20/2026	Class A Common Stock	124,828	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			124,827	03/20/2026	03/20/2026	Class A Common Stock	124,827	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			124,827	03/20/2026	03/20/2026	Class A Common Stock	124,827	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹⁰⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			26,153	03/20/2026	03/20/2026	Class A Common Stock	26,153	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			26,153	03/20/2026	03/20/2026	Class A Common Stock	26,153	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Call option (obligation to sell)	$140	03/20/2026		E/K⁽¹⁾			26,154	03/20/2026	03/20/2026	Class A Common Stock	26,154	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			26,154	03/20/2026	03/20/2026	Class A Common Stock	26,154	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹¹⁾
Call option (obligation to sell)	$135	03/20/2026		E/K⁽¹⁾			235,802	03/20/2026	03/20/2026	Class A Common Stock	235,802	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹²⁾
Put option (right to sell)	$80	03/20/2026		E/K⁽¹⁾⁽¹³⁾			235,802	03/20/2026	03/20/2026	Class A Common Stock	235,802	$0	0	I	Footnotes⁽²⁾⁽³⁾⁽⁴⁾⁽¹²⁾

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. In connection with the expiration of a call option and a put option entered into on August 15, 2025, as part of a collar arrangement, both options expired unexercised and for no value on March 20, 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 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 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 Magnetar Constellation Master Fund, Ltd.

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

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

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

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

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

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

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

13. 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	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).
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: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What did the CoreWeave (CRWV) Form 4 filed by Magnetar entities report?

The Form 4 reports the expiration of an options collar on CoreWeave Class A shares. Magnetar-affiliated funds had paired call and put options that expired unexercised and for no value on March 20, 2026, with no reported open-market stock purchases or sales.

What type of derivatives on CoreWeave (CRWV) did Magnetar funds hold?

The Magnetar funds held call and put options on CoreWeave Class A Common Stock. These options formed a collar, combining obligations to sell via calls and rights to sell via puts, with strike prices referenced at $80, $135 and $140 in the filing.

When did the CoreWeave (CRWV) collar entered by Magnetar begin and end?

The collar was entered on August 15, 2025, and expired on March 20, 2026. On the expiration date, CoreWeave’s Class A Common Stock closed between the call and put strike prices, causing both option legs to lapse unexercised for no value.

Did Magnetar’s CoreWeave (CRWV) options expiration involve exercising the derivatives?

No, the filing states the options expired unexercised and for no value. Because the CoreWeave Class A share price at expiration was between the call and put strike prices, neither side of the collar was exercised by the Magnetar-affiliated funds.

Who actually held the CoreWeave (CRWV) derivatives reported in this Form 4?

The derivatives were held directly by various Magnetar funds, not the individuals. Footnotes specify holdings by Magnetar Constellation Master Fund and other Magnetar funds, while Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaim beneficial ownership except for pecuniary interest.

Does the CoreWeave (CRWV) Form 4 show remaining Magnetar derivative positions?

The filing’s derivative summary shows no remaining derivative positions from this collar. Each listed call and put option on CoreWeave Class A Common Stock has a total shares following transaction figure of zero, indicating these specific contracts fully expired on March 20, 2026.

Magnetar funds’ CoreWeave (CRWV) options collar lapses for no value

Rhea-AI Filing Summary

Positive

Negative

FAQ

What did the CoreWeave (CRWV) Form 4 filed by Magnetar entities report?

What type of derivatives on CoreWeave (CRWV) did Magnetar funds hold?

When did the CoreWeave (CRWV) collar entered by Magnetar begin and end?

Did Magnetar’s CoreWeave (CRWV) options expiration involve exercising the derivatives?

Who actually held the CoreWeave (CRWV) derivatives reported in this Form 4?

Does the CoreWeave (CRWV) Form 4 show remaining Magnetar derivative positions?

NASDAQ:CRWV

CRWV Rankings

CRWV Latest News

CRWV Latest SEC Filings

CRWV Stock Data

Trending News

Magnetar funds’ CoreWeave (CRWV) options collar lapses for no value

Rhea-AI Filing Summary

Positive

Negative

FAQ

What did the CoreWeave (CRWV) Form 4 filed by Magnetar entities report?

What type of derivatives on CoreWeave (CRWV) did Magnetar funds hold?

When did the CoreWeave (CRWV) collar entered by Magnetar begin and end?

Did Magnetar’s CoreWeave (CRWV) options expiration involve exercising the derivatives?

Who actually held the CoreWeave (CRWV) derivatives reported in this Form 4?

Does the CoreWeave (CRWV) Form 4 show remaining Magnetar derivative positions?

NASDAQ:CRWV

CRWV Rankings

CRWV Latest News

CRWV Latest SEC Filings

CRWV Stock Data