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Funds tied to Magnetar sell 159K CoreWeave shares

CoreWeave, Inc. reported that investment funds associated with Magnetar Financial LLC and related entities, all greater-than-ten-percent owners, executed open-market sales of Class A Common Stock.

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

Rhea-AI Filing Summary

CoreWeave, Inc. reported that investment funds associated with Magnetar Financial LLC and related entities, all greater-than-ten-percent owners, executed open-market sales of Class A Common Stock. On May 7, 2026, these funds sold a total of 159,168 shares at prices between $129.00 and $133.00 per share, including large blocks at a weighted average price of $129.73. Following these sales, the reporting entities continue to hold substantial indirect positions in CoreWeave, with individual fund holdings such as 2,124,330 shares, 1,973,782 shares and 870,409 shares reported after the transactions.

Positive

  • None.

Negative

  • None.
Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 159,168 shs ($20.68M)
Type Security Shares Price Value
Sale Class A Common Stock 90,784 $129.73 $11.78M
Sale Class A Common Stock 1,332 $130.00 $173K
Sale Class A Common Stock 1,999 $131.00 $262K
Sale Class A Common Stock 2,666 $132.00 $352K
Sale Class A Common Stock 2,666 $133.00 $355K
Sale Class A Common Stock 45,072 $129.73 $5.85M
Sale Class A Common Stock 662 $130.00 $86K
Sale Class A Common Stock 993 $131.00 $130K
Sale Class A Common Stock 1,324 $132.00 $175K
Sale Class A Common Stock 1,324 $133.00 $176K
Sale Class A Common Stock 9,444 $129.73 $1.23M
Sale Class A Common Stock 138 $130.00 $18K
Sale Class A Common Stock 208 $131.00 $27K
Sale Class A Common Stock 278 $132.00 $37K
Sale Class A Common Stock 278 $133.00 $37K
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 6,691,928 shares (Indirect, Footnotes)
Footnotes (11)
  1. F1. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $129.00 to $129.75, 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. F2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Longhorn Special Opportunities Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, 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 Alpha Star Fund LLC (collectively, the "Magnetar Funds").
  3. F3. 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.
  4. F4. 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. F5. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
  6. F6. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
  7. F7. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
  8. F8. These securities are held directly by Longhorn Special Opportunities Fund LP.
  9. F9. These securities are held directly by Magnetar Alpha Star Fund LLC.
  10. F10. These securities are held directly by Magnetar SC Fund Ltd.
  11. F11. These securities are held directly by Magnetar Xing He Master Fund Ltd.
Shares sold 159,168 shares Total Class A Common Stock sold on May 7, 2026
Price range $129.00–$133.00 per share Reported sale prices across multiple transactions
Weighted average price $129.73 per share Large sale blocks executed around weighted average
Post-sale holding example 2,124,330 shares One Magnetar-associated fund’s indirect holding after transactions
Post-sale holding example 1,973,782 shares Another fund’s indirect holding after transactions
Post-sale holding example 870,409 shares Additional fund’s indirect holding after transactions
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
beneficial ownership financial
"Each of the Magnetar Funds...disclaims beneficial ownership of these shares"
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.
pecuniary interest financial
"disclaims beneficial ownership...except to the extent of its or his pecuniary interest therein."
ten percent owner financial
"reporting persons are flagged as is_ten_percent_owner in the data"
open-market sale financial
"transaction_action":"open-market sale" for multiple transactions"
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

FAQ

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

At what prices did the Magnetar funds sell CoreWeave (CRWV) shares?
The Magnetar-managed funds sold CoreWeave shares at prices ranging from $129.00 to $133.00. A significant portion of the volume traded around a weighted average price of $129.73, according to the transaction details and accompanying price-range footnote.

Who actually holds the CoreWeave (CRWV) shares tied to this Form 4?
The shares are held directly by various Magnetar-sponsored funds, including Magnetar Structured Credit Fund, Purpose Alternative Credit Funds, Longhorn Special Opportunities Fund, Magnetar Alpha Star Fund, Magnetar SC Fund and Magnetar Xing He Master Fund, rather than by individual reporting persons personally.

How do the Magnetar entities describe their beneficial ownership of CoreWeave (CRWV) shares?
Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman each disclaim beneficial ownership of the CoreWeave shares, except to the extent of their pecuniary interest. This language clarifies that economic exposure is partially attributed through the underlying investment funds.

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

Form 4 Insider Transactions: What Each Field Means →
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SEC Form 4
FORM 4UNITED 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)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/07/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Stock05/07/2026S90,784D$129.73(1)6,931,870IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S1,332D$1306,930,538IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S1,999D$1316,928,539IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S2,666D$1326,925,873IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S2,666D$1336,923,207IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S45,072D$129.73(1)2,102,979IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S662D$1302,102,317IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S993D$1312,101,324IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S1,324D$1322,100,000IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S1,324D$1332,098,676IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S9,444D$129.73(1)675,392IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S138D$130675,254IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S208D$131675,046IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S278D$132674,768IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S278D$133674,490IFootnotes(2)(3)(4)(7)
Class A Common Stock1,973,782IFootnotes(2)(3)(4)(8)
Class A Common Stock1,048,917IFootnotes(2)(3)(4)(9)
Class A Common Stock870,409IFootnotes(2)(3)(4)(10)
Class A Common Stock2,124,330IFootnotes(2)(3)(4)(11)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
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
DirectorX10% 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
DirectorX10% 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
DirectorX10% 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
DirectorX10% 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 $129.00 to $129.75, 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 Longhorn Special Opportunities Fund LP, Magnetar SC Fund Ltd, Magnetar Xing He Master Fund Ltd, 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 Alpha Star 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 administrative 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 Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
6. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
7. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
8. These securities are held directly by Longhorn Special Opportunities Fund LP.
9. These securities are held directly by Magnetar Alpha Star Fund LLC.
10. These securities are held directly by Magnetar SC Fund Ltd.
11. These securities are held directly by Magnetar Xing He Master Fund Ltd.
/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 LLC05/08/2026
/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 LP05/08/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC05/08/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman05/08/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

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