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CRWV insider filing: Magnetar funds disclose Oct 27, 2025 sales

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

Rhea-AI Filing Summary

CoreWeave (CRWV): Reporting persons affiliated with Magnetar disclosed multiple open-market sales of Class A Common Stock on October 27, 2025. The trades were executed at weighted average prices within stated ranges from $132.94 to $136.38, as detailed across the footnotes.

The filing aggregates activity across several Magnetar-managed funds and lists updated indirect beneficial holdings for each entity after the transactions, including 23,051,994 shares beneficially owned following transactions for CW Opportunity LLC and 1,686,282 shares beneficially owned following transactions for Magnetar Alpha Star Fund LLC. The footnotes state that each Magnetar entity disclaims beneficial ownership except to the extent of pecuniary interest.

Positive

  • None.

Negative

  • None.

Insights

Large affiliated stock sales by a Director/10% owner at $132.94–$136.38 may signal supply and governance sensitivities.

Multiple entities affiliated with Magnetar Financial LLC, identified as a Director and 10% Owner of CoreWeave, Inc. (CRWV), reported sales of Class A Common Stock on 10/27/2025. The trades were executed across numerous related funds, with weighted average sale prices disclosed in ranges from $132.94 to $136.38. Post-transaction balances remain substantial for each fund, and the reporting persons disclaim beneficial ownership beyond pecuniary interest.

This filing matters because concentrated insider-affiliated selling by a 10% holder can be interpreted as a potential overhang and draws attention to control and liquidity dynamics. The transactions were indirect through multiple vehicles, and prices are reported as weighted averages within specified bands, not single-point prices.

Key items to watch: any continued Form 4 activity by these entities following 10/27/2025, any adoption or disclosure of Rule 10b5‑1 plans, and changes in reported indirect holdings. The near-term lens is the next few reporting days and weeks, as additional filings would clarify pace and persistence of selling.

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)
10/27/2025
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 10/27/2025 S 500 D $133.42(1) 5,766,647 I Footnotes(8)(9)(10)(11)
Class A Common Stock 10/27/2025 S 15,253 D $134.48(2) 5,751,394 I Footnotes(8)(9)(10)(11)
Class A Common Stock 10/27/2025 S 19,115 D $135.48(3) 5,732,279 I Footnotes(8)(9)(10)(11)
Class A Common Stock 10/27/2025 S 359 D $136.1(4) 5,731,920 I Footnotes(8)(9)(10)(11)
Class A Common Stock 10/27/2025 S 95,904 D $134.67(5) 23,101,947 I Footnotes(8)(9)(10)(12)
Class A Common Stock 10/27/2025 S 49,953 D $135.69(6) 23,051,994 I Footnotes(8)(9)(10)(12)
Class A Common Stock 10/27/2025 S 10,338 D $135.7(3) 2,194,394 I Footnotes(8)(9)(10)(13)
Class A Common Stock 10/27/2025 S 278 D $136.04 2,194,116 I Footnotes(8)(9)(10)(13)
Class A Common Stock 10/27/2025 S 12,573 D $134.67(5) 1,692,833 I Footnotes(8)(9)(10)(14)
Class A Common Stock 10/27/2025 S 6,551 D $135.69(6) 1,686,282 I Footnotes(8)(9)(10)(14)
Class A Common Stock 10/27/2025 S 1,300 D $134.67(5) 313,105 I Footnotes(8)(9)(10)(15)
Class A Common Stock 10/27/2025 S 678 D $135.69(6) 312,427 I Footnotes(8)(9)(10)(15)
Class A Common Stock 10/27/2025 S 28,026 D $134.67(5) 5,294,166 I Footnotes(8)(9)(10)(16)
Class A Common Stock 10/27/2025 S 14,602 D $135.69(6) 5,279,564 I Footnotes(8)(9)(10)(16)
Class A Common Stock 10/27/2025 S 38,480 D $134.67(5) 6,599,108 I Footnotes(8)(9)(10)(17)
Class A Common Stock 10/27/2025 S 20,042 D $135.69(6) 6,579,066 I Footnotes(8)(9)(10)(17)
Class A Common Stock 10/27/2025 S 47,955 D $134.67(5) 9,154,908 I Footnotes(8)(9)(10)(18)
Class A Common Stock 10/27/2025 S 14,786 D $135.67(7) 9,140,122 I Footnotes(8)(9)(10)(18)
Class A Common Stock 10/27/2025 S 10,897 D $134.67(5) 1,289,279 I Footnotes(8)(9)(10)(19)
Class A Common Stock 10/27/2025 S 5,678 D $135.69(6) 1,283,601 I Footnotes(8)(9)(10)(19)
Class A Common Stock 10/27/2025 S 41,029 D $134.67(5) 8,975,449 I Footnotes(8)(9)(10)(20)
Class A Common Stock 10/27/2025 S 21,372 D $135.69(6) 8,954,077 I Footnotes(8)(9)(10)(20)
Class A Common Stock 10/27/2025 S 25,287 D $134.67(5) 3,419,319 I Footnotes(8)(9)(10)(21)
Class A Common Stock 10/27/2025 S 13,171 D $135.69(6) 3,406,148 I Footnotes(8)(9)(10)(21)
Class A Common Stock 10/27/2025 S 20,370 D $134.67(5) 3,155,182 I Footnotes(8)(9)(10)(22)
Class A Common Stock 10/27/2025 S 10,611 D $135.69(6) 3,144,571 I Footnotes(8)(9)(10)(22)
Class A Common Stock 10/27/2025 S 4,267 D $134.67(5) 898,371 I Footnotes(8)(9)(10)(23)
Class A Common Stock 10/27/2025 S 2,224 D $135.69(6) 896,147 I Footnotes(8)(9)(10)(23)
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 $132.94 to $133.91, 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, 3, 4, 5, 6, 7.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $133.96 to $134.94, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $135.00 to $135.99, inclusive.
4. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $136.03 to $136.38, inclusive.
5. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $134.33 to $135.32, inclusive.
6. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $135.50 to $136.04, inclusive.
7. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $135.50 to $135.99, inclusive.
8. 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").
9. 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.
10. 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.
11. These securities are held directly by CW Opportunity 2 LP.
12. These securities are held directly by CW Opportunity LLC.
13. These securities are held directly by Longhorn Special Opportunities Fund LP.
14. These securities are held directly by Magnetar Alpha Star Fund LLC.
15. These securities are held directly by Magnetar Capital Master Fund, Ltd.
16. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
17. These securities are held directly by Magnetar Lake Credit Fund LLC.
18. These securities are held directly by Magnetar Longhorn Fund LP.
19. These securities are held directly by Magnetar SC Fund Ltd.
20. These securities are held directly by Magnetar Structured Credit Fund, LP.
21. These securities are held directly by Magnetar Xing He Master Fund Ltd.
22. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
23. 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 10/29/2025
/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 10/29/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC 10/29/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman 10/29/2025
** 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.

FAQ

What did CoreWeave (CRWV) insiders report on the Form 4?

Magnetar-affiliated reporting persons reported multiple open-market sales of CRWV Class A Common Stock on October 27, 2025 at weighted average prices within disclosed ranges.

What price ranges were disclosed for the CRWV sales?

The footnotes list weighted average price ranges from $132.94–$133.91, $133.96–$134.94, $135.00–$135.99, $136.03–$136.38, and $134.33–$135.32, among others.

Which Magnetar entities are referenced in the CRWV Form 4?

Entities include CW Opportunity LLC, CW Opportunity 2 LP, Magnetar Alpha Star Fund LLC, and other Magnetar funds listed in the footnotes.

What are examples of post-transaction beneficial holdings reported?

Examples include 23,051,994 shares beneficially owned following transactions for CW Opportunity LLC and 1,686,282 shares beneficially owned following transactions for Magnetar Alpha Star Fund LLC.

Do the reporting persons claim full ownership of the CRWV shares?

The footnotes state that each Magnetar entity disclaims beneficial ownership except to the extent of its or his pecuniary interest.

Were these CRWV trades made under a Rule 10b5-1 plan?

The excerpt includes the standard 10b5-1 checkbox language; the filing’s excerpt does not indicate whether it was checked.

Are derivative securities included in this Form 4?

The derivative table is present in the form layout; the excerpt does not list specific derivative transactions.

CoreWeave, Inc.

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