[Form 4] CoreWeave, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Magnetar reporting persons disclosed a collar entered on 09/30/2025 over shares of CoreWeave, Inc. (CRWV). The arrangement consists of written covered call options with a $200 strike and purchased put options with a $115 strike, each set to expire on 06/18/2026. The filing shows three option lots covering 36,386, 29,311 and 6,141 underlying Class A shares, totaling 71,838 shares held indirectly by Magnetar funds. Only one side of the collar can be in-the-money at expiration; the in-the-money option will be exercised and settled in shares, and the other will expire. Reporting parties include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman.

Positive

• 71,838 shares are covered by a documented collar arrangement, showing explicit risk management actions
• Options are paired with the same 06/18/2026 expiration, simplifying expiration event outcomes

Negative

• The collar may result in share settlement at expiration, potentially transferring up to 71,838 Class A shares
• Form 4 does not disclose option premiums or counterparty, leaving incomplete financial impact details

Insights

Corporate Governance Analyst

Magnetar placed a collar on 71,838 CRWV shares expiring 06/18/2026

The Form 4 records a covered-call/write and protective-put purchase entered 09/30/2025 with call strikes at $200 and put strikes at $115. The filing explicitly states that only the in-the-money option will be exercised and settled in shares at expiration.

All holdings are reported as indirect and held by Magnetar funds, with standard disclaimers of beneficial ownership except for pecuniary interest. This is a governance- and ownership-disclosure event showing option-based hedging executed by a significant owner.

Derivatives/Capital Markets Analyst

Transaction details: collar with strikes at $200/$115, total underlying 71,838 shares

The report lists three paired call/put lots: 36,386, 29,311, and 6,141 underlying Class A shares. Each option set shares the same expiration date 06/18/2026 and was transacted on 09/30/2025. The Form 4 shows option settlement will be in shares when exercised.

This disclosure identifies the precise notional exposure and strikes; the filing does not provide premium paid/received or counterparty details.

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).

1. Name and Address of Reporting Person^*

Magnetar Financial LLC

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON IL 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)
09/30/2025

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)
			Code	V	Amount	(A) or (D)	Price

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
Call option (obligation to sell)	$200	09/30/2025		S/K(1)			36,386	06/18/2026	06/18/2026	Class A Common Stock	36,386	$764,106	36,386	I	Footnotes(2)(3)(4)(5)
Put option (right to sell)	$115	09/30/2025		P/K(1)		36,386		06/18/2026	06/18/2026	Class A Common Stock	36,386	$836,878	36,386	I	Footnotes(2)(3)(4)(5)
Call option (obligation to sell)	$200	09/30/2025		S/K(1)			29,311	06/18/2026	06/18/2026	Class A Common Stock	29,311	$615,531	29,311	I	Footnotes(2)(3)(4)(6)
Put option (right to sell)	$115	09/30/2025		P/K(1)		29,311		06/18/2026	06/18/2026	Class A Common Stock	29,311	$674,153	29,311	I	Footnotes(2)(3)(4)(6)
Call option (obligation to sell)	$200	09/30/2025		S/K(1)			6,141	06/18/2026	06/18/2026	Class A Common Stock	6,141	$128,961	6,141	I	Footnotes(2)(3)(4)(7)
Put option (right to sell)	$115	09/30/2025		P/K(1)		6,141		06/18/2026	06/18/2026	Class A Common Stock	6,141	$141,243	6,141	I	Footnotes(2)(3)(4)(7)

1. Name and Address of Reporting Person^*

Magnetar Financial LLC

(Last) (First) (Middle)

1603 ORRINGTON AVENUE

13TH FLOOR

(Street)

EVANSTON IL 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 IL 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 IL 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 IL 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. The entity holding the underlying shares of Class A common stock (the "Common Stock") of the Issuer 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 (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 Xing He Master Fund Ltd.

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.

	/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	10/02/2025
	/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	10/02/2025
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC	10/02/2025
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	10/02/2025
	** 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.
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FAQ

What did Magnetar report for CoreWeave (CRWV)?

Magnetar reported entering a collar on 09/30/2025 that covers 71,838 Class A shares of CoreWeave with calls at $200 and puts at $115, expiring 06/18/2026.

How many underlying shares are in the reported option transactions?

The filing lists three lots of underlying shares: 36,386, 29,311, and 6,141, totaling 71,838 shares.

Who filed the Form 4 for these transactions?

Reporting persons include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman (via attorney-in-fact filings).

When will the options expire and how will they settle?

All listed options expire on 06/18/2026; the Form 4 states the in-the-money option at expiration will be exercised and settled in shares, while the other expires.

Are the reported holdings direct or indirect?

The filing shows the holdings are reported as indirect and held directly by Magnetar funds specified in the footnotes.