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Form 4: Magnetar Entities Dispose of 573,457 CoreWeave Shares

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Magnetar-related entities reported multiple disposals of CoreWeave, Inc. (CRWV) Class A common stock on 09/09/2025. The Form 4 shows a total of 573,457 shares sold across a series of transactions at a weighted average price of $103.84 per share. The filings identify Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman as reporting persons and disclose that the sold shares are held directly by various Magnetar-managed funds. The report also shows substantial remaining indirect holdings by the Magnetar group across multiple funds.

Positive

  • None.

Negative

  • Aggregated insider disposals of 573,457 Class A shares executed on 09/09/2025 at a weighted average price of $103.84.
  • Sales were executed by multiple Magnetar-affiliated entities (Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and related funds), indicating coordinated disposals across managed funds.

Insights

TL;DR: A large block sale of 573,457 CRWV shares by Magnetar entities at ~$103.84 each was reported, reducing their indirect position.

This Form 4 documents coordinated disposals by multiple Magnetar-affiliated entities on a single date. The weighted average sale price is disclosed and the filing specifies the exact funds holding the sold shares. The disclosure is explicit about indirect ownership structures and includes disclaimers of beneficial ownership except for pecuniary interest. From a trading-disclosure standpoint, the filing is thorough and provides transparency on which managed funds held and sold the shares.

TL;DR: Insiders associated with Magnetar reported significant aggregated share disposals, which is a material insider transaction that investors should note.

The filing lists multiple disposals totaling 573,457 shares executed on 09/09/2025 at a weighted average price of $103.84. Reporting persons include an adviser, parent entities, and an individual manager, with clear attribution of the directly held funds for each tranche sold. The inclusion of disclaimers of beneficial ownership is standard, but the scale and coordination of sales across affiliated funds make this a material disclosure under Section 16 reporting rules.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 573,457 shs ($59.55M)
Type Security Shares Price Value
Sale Class A Common Stock 38,027 $103.84 $3.95M
Sale Class A Common Stock 157,336 $103.84 $16.34M
Sale Class A Common Stock 20,627 $103.84 $2.14M
Sale Class A Common Stock 2,133 $103.84 $221K
Sale Class A Common Stock 45,982 $103.84 $4.77M
Sale Class A Common Stock 63,128 $103.84 $6.56M
Sale Class A Common Stock 79,130 $103.84 $8.22M
Sale Class A Common Stock 17,879 $103.84 $1.86M
Sale Class A Common Stock 67,311 $103.84 $6.99M
Sale Class A Common Stock 41,484 $103.84 $4.31M
Sale Class A Common Stock 33,418 $103.84 $3.47M
Sale Class A Common Stock 7,002 $103.84 $727K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 7,140,206 shares (Indirect, Footnotes)
Footnotes (1)
  1. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $103.80 to $103.84, inclusive. The reporting person undertakes to provide to CoreWeave, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 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, Purpose Alternative Credit Fund - T LLC, and Longhorn Special Opportunities Fund LP, 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"). 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. 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. These securities are held directly by CW Opportunity 2 LP. These securities are held directly by CW Opportunity LLC. These securities are held directly by Magnetar Alpha Star Fund LLC. These securities are held directly by Magnetar Capital Master Fund, Ltd. These securities are held directly by Magnetar Constellation Master Fund, Ltd. These securities are held directly by Magnetar Lake Credit Fund LLC. These securities are held directly by Magnetar Longhorn Fund LP. These securities are held directly by Magnetar SC Fund Ltd. These securities are held directly by Magnetar Structured Credit Fund, LP. These securities are held directly by Magnetar Xing He Master Fund Ltd. These securities are held directly by Purpose Alternative Credit Fund - F LLC. These securities are held directly by Purpose Alternative Credit Fund - T LLC. These securities are held directly by Longhorn Special Opportunities Fund LP.
Form 4 Insider Transactions: What Each Field Means →
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 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)
09/09/2025
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
Class A Common Stock 09/09/2025 S 38,027 D $103.84(1) 7,140,206 I Footnotes(2)(3)(4)(5)
Class A Common Stock 09/09/2025 S 157,336 D $103.84 28,839,164 I Footnotes(2)(3)(4)(6)
Class A Common Stock 09/09/2025 S 20,627 D $103.84 2,445,023 I Footnotes(2)(3)(4)(7)
Class A Common Stock 09/09/2025 S 2,133 D $103.84 390,913 I Footnotes(2)(3)(4)(8)
Class A Common Stock 09/09/2025 S 45,982 D $103.84 6,970,919 I Footnotes(2)(3)(4)(9)
Class A Common Stock 09/09/2025 S 63,128 D $103.84 8,901,058 I Footnotes(2)(3)(4)(10)
Class A Common Stock 09/09/2025 S 79,130 D $103.84 9,827,219 I Footnotes(2)(3)(4)(11)
Class A Common Stock 09/09/2025 S 17,879 D $103.84 1,941,236 I Footnotes(2)(3)(4)(12)
Class A Common Stock 09/09/2025 S 67,311 D $103.84 11,429,982 I Footnotes(2)(3)(4)(13)
Class A Common Stock 09/09/2025 S 41,484 D $103.84 4,932,036 I Footnotes(2)(3)(4)(14)
Class A Common Stock 09/09/2025 S 33,418 D $103.84 4,373,797 I Footnotes(2)(3)(4)(15)
Class A Common Stock 09/09/2025 S 7,002 D $103.84 1,153,675 I Footnotes(2)(3)(4)(16)
Class A Common Stock 4,417,607 I Footnotes(2)(3)(4)(17)
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
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 price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $103.80 to $103.84, inclusive. The reporting person undertakes to provide to CoreWeave, Inc. (the "Issuer"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.
2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 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, Purpose Alternative Credit Fund - T LLC, and Longhorn Special Opportunities Fund LP, 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").
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 CW Opportunity 2 LP.
6. These securities are held directly by CW Opportunity LLC.
7. These securities are held directly by Magnetar Alpha Star Fund LLC.
8. These securities are held directly by Magnetar Capital Master Fund, Ltd.
9. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
10. These securities are held directly by Magnetar Lake Credit Fund LLC.
11. These securities are held directly by Magnetar Longhorn Fund LP.
12. These securities are held directly by Magnetar SC Fund Ltd.
13. These securities are held directly by Magnetar Structured Credit Fund, LP.
14. These securities are held directly by Magnetar Xing He Master Fund Ltd.
15. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
16. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
17. These securities are held directly by Longhorn Special Opportunities Fund LP.
/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 09/11/2025
/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 09/11/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC 09/11/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman 09/11/2025
** 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.
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.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transactions were reported for CoreWeave (CRWV) on 09/09/2025?

The Form 4 reports 573,457 shares sold by Magnetar-affiliated entities on 09/09/2025 at a weighted average price of $103.84 per share.

Were the sold CRWV shares held directly or indirectly?

The filing states the securities were held directly by various Magnetar-managed funds (each fund explicitly identified in footnotes) and reported as indirect ownership for the reporting entities.

What price range and average price are disclosed for the CRWV sales?

The securities were sold in multiple transactions at prices ranging from $103.80 to $103.84, with a reported weighted average price of $103.84.

Does the Form 4 state any disclaimers about beneficial ownership?

Yes. The filing contains explicit disclaimers that each Magnetar fund and related reporting entities disclaim beneficial ownership of the shares except to the extent of their pecuniary interest.