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Magnetar Funds Report September 2025 Dispositions of CoreWeave (CRWV)

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

Rhea-AI Filing Summary

Magnetar-affiliated holders reported sales of CoreWeave (CRWV) Class A common stock on 09/18/2025. The filing shows a series of dispositions totaling 176,512 shares sold across multiple transactions at weighted-average prices with reported price ranges from $120.06 to $123.06. The report lists multiple remaining beneficial ownership amounts after the sales for different fund holdings, including figures such as 4,624,172, 4,604,152 and 1,098,337 shares, reflecting the positions held indirectly by Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC. The filing is signed by an attorney-in-fact on behalf of the Magnetar reporting group.

Positive

  • Detailed disclosure of control relationships among Magnetar entities clarifies who holds and manages the positions
  • Post-transaction beneficial ownership figures provided, enabling investors to see remaining indirect holdings by each fund

Negative

  • Significant dispositions totaling 176,512 shares could reduce institutional voting stake or signal portfolio rebalancing
  • Sales occurred across a price range which may indicate multiple executed blocks rather than single negotiated transactions

Insights

TL;DR: Magnetar entities executed sizeable 09/18/2025 dispositions totaling 176,512 CRWV shares across price bands near $120–$123.

The transactions represent multiple block sales by Magnetar-affiliated funds and related entities rather than derivative exercises. The filing provides weighted-average prices and price ranges for the trades and discloses post-transaction beneficial ownership by the funds. For investors, the material point is the aggregate size of the disposals and the continued indirect ownership across three funds. The filing contains clear disclosure of the chain of control among Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman along with disclaimers of beneficial ownership limited to pecuniary interest.

TL;DR: The Form 4 documents routine insider sales by an institutional holder and clarifies control relationships among reporting entities.

The Form 4 is detailed on ownership structure and identifies the specific funds that directly hold the sold securities. Signatures are provided by an attorney-in-fact, fulfilling filing formalities. The disclosure of indirect ownership and customary disclaimers is consistent with standard Section 16 reporting. No derivative instruments or new governance actions are reported.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 176,512 shs ($21.29M)
Type Security Shares Price Value
Sale Class A Common Stock 69,383 $120.38 $8.35M
Sale Class A Common Stock 17,978 $121.31 $2.18M
Sale Class A Common Stock 2,042 $122.71 $251K
Sale Class A Common Stock 55,893 $120.38 $6.73M
Sale Class A Common Stock 14,489 $121.31 $1.76M
Sale Class A Common Stock 1,639 $122.71 $201K
Sale Class A Common Stock 11,711 $120.38 $1.41M
Sale Class A Common Stock 3,030 $121.31 $368K
Sale Class A Common Stock 347 $122.71 $43K
Holdings After Transaction: Class A Common Stock — 4,624,172 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 $120.06 to $121.03, 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 $121.10 to $121.68, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $122.40 to $123.06, inclusive. 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"). 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 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.
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)
09/18/2025
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 09/18/2025 S 69,383 D $120.38(1) 4,624,172 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/18/2025 S 17,978 D $121.31(2) 4,606,194 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/18/2025 S 2,042 D $122.71(3) 4,604,152 I Footnotes(4)(5)(6)(7)
Class A Common Stock 09/18/2025 S 55,893 D $120.38(1) 4,125,793 I Footnotes(4)(5)(6)(8)
Class A Common Stock 09/18/2025 S 14,489 D $121.31(2) 4,111,304 I Footnotes(4)(5)(6)(8)
Class A Common Stock 09/18/2025 S 1,639 D $122.71(3) 4,109,665 I Footnotes(4)(5)(6)(8)
Class A Common Stock 09/18/2025 S 11,711 D $120.38(1) 1,101,714 I Footnotes(4)(5)(6)(9)
Class A Common Stock 09/18/2025 S 3,030 D $121.31(2) 1,098,684 I Footnotes(4)(5)(6)(9)
Class A Common Stock 09/18/2025 S 347 D $122.71(3) 1,098,337 I Footnotes(4)(5)(6)(9)
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 $120.06 to $121.03, 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 $121.10 to $121.68, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $122.40 to $123.06, inclusive.
4. 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").
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 Magnetar Xing He Master Fund Ltd.
8. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
9. 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 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 report for CoreWeave (CRWV) on Form 4?

The filing reports multiple dispositions on 09/18/2025 totaling 176,512 Class A shares sold by Magnetar-affiliated funds.

At what prices were the CRWV shares sold?

The filing reports weighted-average prices with transaction price ranges from $120.06 to $123.06 across different trade groups.

Which Magnetar entities are named as reporting persons on the Form 4?

Reporting persons include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman.

Which funds directly held the securities sold?

Footnotes identify the direct holders as Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC.

Who signed the Form 4 filing?

The Form 4 is signed by Hayley A. Stein as attorney-in-fact for David J. Snyderman and related Magnetar entities on 09/22/2025.