Magnetar funds trade call options tied to 2M CoreWeave shares

Magnetar-affiliated entities reported derivative sales tied to CoreWeave, Inc. (CRWV).

Rhea-AI Filing Summary

Magnetar-affiliated entities reported derivative sales tied to CoreWeave, Inc. (CRWV). On 2026-08-12, funds advised or managed by Magnetar Financial LLC entered into nine transactions involving call options described as an obligation to sell, referencing a total of 2,000,000 shares of Class A Common Stock with a $130.00 exercise price and an exercise and expiration date of March 19, 2027. The options are held indirectly through various Magnetar funds, and Magnetar Financial, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman each disclaim beneficial ownership except to the extent of their pecuniary interest.

Insider Trade Summary

Net Seller: 2,000,000 shares

Net Sell 9 txns

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.

Role 10% Owner | 10% Owner | 10% Owner | 10% Owner

Sold 2,000,000 shs

Type	Security	Shares	Price	Value
Sale	Call option (obligation to sell) F1, F2, F3, F4	183,640	$3,659,027.00 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F5	627,486	$12,502,658.55 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F6	8,503	$169,422.28	$1.44B
Sale	Call option (obligation to sell) F1, F2, F3, F7	183,381	$3,653,866.43 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F8	251,762	$5,016,357.85 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F9	315,583	$6,287,991.28 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F10	268,446	$5,348,786.55 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F11	133,276	$2,655,524.30 as filed	--
Sale	Call option (obligation to sell) F1, F2, F3, F12	27,923	$556,365.78	$15.54B

• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $3,659,027.00 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $12,502,658.55 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $3,653,866.43 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $5,016,357.85 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $6,287,991.28 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $5,348,786.55 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.
• Call option (obligation to sell), Aug 12, 2026. Price shown as filed: $2,655,524.30 per share is far above the $107.73 close on Aug 12, 2026, so no transaction value is shown.

Holdings After Transaction: Call option (obligation to sell) — 2,000,000 contracts (Indirect, Footnotes)

Footnotes (12)

1. F1. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, 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 Lake Credit Fund LLC (collectively, the "Magnetar Funds").
2. F2. 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. F3. 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. F4. These securities are held directly by CW Opportunity 2 LP.
5. F5. These securities are held directly by CW Opportunity LLC.
6. F6. These securities are held directly by Magnetar Capital Master Fund, Ltd.
7. F7. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
8. F8. These securities are held directly by Magnetar Lake Credit Fund LLC.
9. F9. These securities are held directly by Magnetar Longhorn Fund LP.
10. F10. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
11. F11. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
12. F12. These securities are held directly by Purpose Alternative Credit Fund - T LLC.

Key Figures

Underlying shares: 2,000,000 shares Exercise price: $130.00 per share Exercise and expiration date: March 19, 2027 +2 more

5 metrics

Underlying shares 2,000,000 shares Total Class A Common Stock referenced by reported call options

Exercise price $130.00 per share Exercise price for each reported call option position

Exercise and expiration date March 19, 2027 Exercise and expiration date for the call options

Number of derivative transactions 9 transactions Total derivative entries reported in this insider filing

Net derivative direction 2,000,000 shares sold Net derivative exposure from call options described as an obligation to sell

Key Terms

Call option (obligation to sell, Class A Common Stock, pecuniary interest, indirect ownership, +1 more

5 terms

Call option (obligation to sell financial

"security_title: "Call option (obligation to sell)""

Class A Common Stock financial

"underlying_security_title: "Class A Common Stock""

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

pecuniary interest financial

"disclaims beneficial ownership ... except to the extent of its or his pecuniary interest therein"

indirect ownership financial

"direct_or_indirect: "I" and nature_of_ownership: "Footnotes""

beneficial ownership financial

"disclaims beneficial ownership of these shares of Common Stock of the Issuer"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Magnetar-related holders report trading in CoreWeave (CRWV) on this Form 4?

Magnetar-related funds reported nine derivative transactions on 2026-08-12 involving call options described as an obligation to sell, tied to 2,000,000 underlying shares of CoreWeave Class A Common Stock with a $130.00 exercise price.

How many CoreWeave (CRWV) shares are referenced by the reported call options?

The reported call option positions reference 2,000,000 underlying shares of CoreWeave Class A Common Stock. Each option has an exercise price of $130.00 and an exercise and expiration date of March 19, 2027, according to the disclosure.

What type of derivative did Magnetar entities report for CoreWeave (CRWV)?

The filing lists call options described as an obligation to sell referencing CoreWeave Class A Common Stock. These derivatives carry a $130.00 exercise price and a shared exercise and expiration date of March 19, 2027 across the nine reported transactions.

Were the CoreWeave (CRWV) derivative holdings reported as direct or indirect by Magnetar?

All reported positions are classified as indirect ownership, held through specific Magnetar-managed funds such as CW Opportunity 2 LP and others. The advisers and parent entities disclaim beneficial ownership except for any pecuniary interest they may have.

Do Magnetar and related parties claim full beneficial ownership of the CoreWeave (CRWV) derivatives?

No. Magnetar Financial, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman each disclaim beneficial ownership of the CoreWeave securities, except to the extent of their pecuniary interest in the relevant Magnetar funds that directly hold the options.

Which entities directly hold the CoreWeave (CRWV) call options reported by Magnetar?

The options are held directly by various Magnetar funds, including CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Capital Master Fund, Magnetar Constellation Master Fund, Magnetar Lake Credit Fund, Magnetar Longhorn Fund, Magnetar Structured Credit Fund and two Purpose Alternative Credit Funds.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/14/2026 - 09:50 PM EDT Learn about SEC filing dates

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)
08/12/2026

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

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)	$130	08/12/2026		S			183,640	03/19/2027	03/19/2027	Class A Common Stock	183,640	$3,659,027	183,640	I	Footnotes(1)(2)(3)(4)
Call option (obligation to sell)	$130	08/12/2026		S			627,486	03/19/2027	03/19/2027	Class A Common Stock	627,486	$12,502,658.55	627,486	I	Footnotes(1)(2)(3)(5)
Call option (obligation to sell)	$130	08/12/2026		S			8,503	03/19/2027	03/19/2027	Class A Common Stock	8,503	$169,422.28	8,503	I	Footnotes(1)(2)(3)(6)
Call option (obligation to sell)	$130	08/12/2026		S			183,381	03/19/2027	03/19/2027	Class A Common Stock	183,381	$3,653,866.43	183,381	I	Footnotes(1)(2)(3)(7)
Call option (obligation to sell)	$130	08/12/2026		S			251,762	03/19/2027	03/19/2027	Class A Common Stock	251,762	$5,016,357.85	251,762	I	Footnotes(1)(2)(3)(8)
Call option (obligation to sell)	$130	08/12/2026		S			315,583	03/19/2027	03/19/2027	Class A Common Stock	315,583	$6,287,991.28	315,583	I	Footnotes(1)(2)(3)(9)
Call option (obligation to sell)	$130	08/12/2026		S			268,446	03/19/2027	03/19/2027	Class A Common Stock	268,446	$5,348,786.55	268,446	I	Footnotes(1)(2)(3)(10)
Call option (obligation to sell)	$130	08/12/2026		S			133,276	03/19/2027	03/19/2027	Class A Common Stock	133,276	$2,655,524.3	133,276	I	Footnotes(1)(2)(3)(11)
Call option (obligation to sell)	$130	08/12/2026		S			27,923	03/19/2027	03/19/2027	Class A Common Stock	27,923	$556,365.78	27,923	I	Footnotes(1)(2)(3)(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. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, 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 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 CW Opportunity 2 LP.

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

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

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

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

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

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

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

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

	/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	08/14/2026
	/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	08/14/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC	08/14/2026
	/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman	08/14/2026
	** 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)