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Form 4: Magnetar-Affiliates Disclose Large CRWV Dispositions

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

Rhea-AI Filing Summary

CoreWeave, Inc. (CRWV) reporting persons from Magnetar-affiliated entities disclosed multiple sales of Class A common stock on 09/22/2025. The filing lists a series of dispositions at weighted-average prices ranging from approximately $131.39 to $133.95. The disclosed transactions total 734,110 shares sold across multiple Magnetar funds and related entities, with individual sale tranches and weighted-average prices provided in the form. Post-transaction beneficial ownership figures are shown per line (examples include 26,626,077 and other holdings), and the filing states that the Magnetar entities and the named manager generally disclaim beneficial ownership except to the extent of pecuniary interest. The document is signed by an attorney-in-fact on behalf of the reporting parties.

Positive

  • Timely and detailed disclosure of multiple transactions by Magnetar-affiliated reporting persons on Form 4
  • Specific weighted-average prices and post-transaction ownership counts are provided, enhancing transparency

Negative

  • Aggregate disposals of 734,110 Class A shares on 09/22/2025 by Magnetar-related entities
  • Multiple affiliated funds reduced holdings, which may alter the ownership profile of CRWV shareholders

Insights

TL;DR: Magnetar-related entities executed sizable stock sales on 09/22/2025, disclosed fully on Form 4.

The filings show coordinated dispositions totaling 734,110 Class A shares executed in multiple tranches at weighted-average prices in the low-$130s. The report provides specific post-transaction ownership counts for each fund, enabling investors to see remaining indirect holdings. There is no earnings or operational information in this filing; it solely documents insider-related sales and legal disclaimers of beneficial ownership except for pecuniary interest. From a market-data perspective, this is a transparency event rather than an operational disclosure.

TL;DR: Multiple Magnetar-controlled entities and their manager disclosed extensive sales, raising governance and signaling questions.

The Form 4 records numerous dispositions by affiliated funds and holding entities managed through Magnetar Financial, Magnetar Capital Partners and Supernova Management with David J. Snyderman identified as manager. The aggregate sale activity and the breadth of funds involved are material to ownership structure monitoring. The filing appropriately includes footnotes clarifying direct holders and disclaimers of beneficial ownership, and it is signed by an authorized attorney-in-fact. Such concentrated disposition activity by a large investor block is relevant to governance scrutiny and investor monitoring.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 734,110 shs ($97.21M)
Type Security Shares Price Value
Sale Class A Common Stock 18,827 $132.29 $2.49M
Sale Class A Common Stock 28,732 $132.50 $3.81M
Sale Class A Common Stock 500 $133.95 $67K
Sale Class A Common Stock 600 $135.88 $82K
Sale Class A Common Stock 201,417 $132.42 $26.67M
Sale Class A Common Stock 101,300 $132.42 $13.41M
Sale Class A Common Stock 26,407 $132.42 $3.50M
Sale Class A Common Stock 2,731 $132.42 $362K
Sale Class A Common Stock 58,868 $132.42 $7.80M
Sale Class A Common Stock 80,815 $132.42 $10.70M
Sale Class A Common Stock 22,890 $132.42 $3.03M
Sale Class A Common Stock 86,170 $132.42 $11.41M
Sale Class A Common Stock 53,107 $132.42 $7.03M
Sale Class A Common Stock 42,781 $132.42 $5.67M
Sale Class A Common Stock 8,965 $132.42 $1.19M
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 6,635,477 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 $131.39 to $132.33, 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 and in footnotes 2 and 3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $132.48 to $133.31, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $132.33 to $132.48, inclusive. 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 Longhorn Special Opportunities Fund LP. 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 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 Magnetar Longhorn 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)
09/22/2025
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 09/22/2025 S 18,827 D $132.29(1) 6,635,477 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/22/2025 S 28,732 D $132.5(2) 6,606,745 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/22/2025 S 500 D $133.95 6,606,245 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/22/2025 S 600 D $135.88 6,605,645 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/22/2025 S 201,417 D $132.42(3) 26,626,077 I Footnotes(4)(5)(6)(8)
Class A Common Stock 09/22/2025 S 101,300 D $132.42(3) 3,928,922 I Footnotes(4)(5)(6)(9)
Class A Common Stock 09/22/2025 S 26,407 D $132.42(3) 2,154,867 I Footnotes(4)(5)(6)(10)
Class A Common Stock 09/22/2025 S 2,731 D $132.42(3) 360,900 I Footnotes(4)(5)(6)(11)
Class A Common Stock 09/22/2025 S 58,868 D $132.42(3) 6,324,154 I Footnotes(4)(5)(6)(12)
Class A Common Stock 09/22/2025 S 80,815 D $132.42(3) 8,013,118 I Footnotes(4)(5)(6)(13)
Class A Common Stock 09/22/2025 S 22,890 D $132.42(3) 1,689,750 I Footnotes(4)(5)(6)(14)
Class A Common Stock 09/22/2025 S 86,170 D $132.42(3) 10,483,179 I Footnotes(4)(5)(6)(15)
Class A Common Stock 09/22/2025 S 53,107 D $132.42(3) 4,348,523 I Footnotes(4)(5)(6)(16)
Class A Common Stock 09/22/2025 S 42,781 D $132.42(3) 3,903,726 I Footnotes(4)(5)(6)(17)
Class A Common Stock 09/22/2025 S 8,965 D $132.42(3) 1,055,194 I Footnotes(4)(5)(6)(18)
Class A Common Stock 9,202,863 I Footnotes(4)(5)(6)(19)
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 $131.39 to $132.33, 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 and in footnotes 2 and 3.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $132.48 to $133.31, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $132.33 to $132.48, inclusive.
4. 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").
5. 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.
6. 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.
7. These securities are held directly by CW Opportunity 2 LP.
8. These securities are held directly by CW Opportunity LLC.
9. These securities are held directly by Longhorn Special Opportunities Fund LP.
10. These securities are held directly by Magnetar Alpha Star Fund LLC.
11. These securities are held directly by Magnetar Capital Master Fund, Ltd.
12. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
13. These securities are held directly by Magnetar Lake Credit Fund LLC.
14. These securities are held directly by Magnetar SC Fund Ltd.
15. These securities are held directly by Magnetar Structured Credit Fund, LP.
16. These securities are held directly by Magnetar Xing He Master Fund Ltd.
17. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
18. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
19. These securities are held directly by Magnetar Longhorn 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 09/22/2025
/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 09/22/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC 09/22/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman 09/22/2025
** 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 did Magnetar-affiliated entities report on the CRWV Form 4?

They reported multiple sales totaling 734,110 Class A shares on 09/22/2025 at weighted-average prices in the low-$130s.

When were the transactions executed according to the Form 4?

The transactions occurred on 09/22/2025 and are recorded with weighted-average prices and post-transaction ownership figures.

What prices were reported for the CRWV share sales?

Weighted-average prices ranged approximately from $131.39 to $133.95, with specific footnotes detailing price ranges per tranche.

Do the reporting persons claim beneficial ownership of the sold shares?

The Magnetar entities and David J. Snyderman disclaim beneficial ownership of the shares except to the extent of their pecuniary interest, per the footnotes.