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Magnetar-advised funds trim CoreWeave (CRWV) stake with 587K-share sale

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

Rhea-AI Filing Summary

CoreWeave, Inc. major shareholder funds advised by Magnetar Financial LLC reported multiple open-market sales of Class A Common Stock. The filing shows a net sale of 587,010 shares across 30 transactions by investment funds for which Magnetar Financial acts as investment adviser.

Sale prices ranged around $129–$133 per share, including weighted-average prices disclosed in the footnotes. After these trades, individual Magnetar-advised vehicles still report multi-million-share positions, such as 17,906,250 shares, 6,788,963 shares and 4,160,825 shares held following specific transactions.

Positive

  • None.

Negative

  • None.

Insights

Magnetar-advised funds executed sizable but portfolio-style CoreWeave share sales.

Investment funds advised by Magnetar Financial LLC collectively sold 587,010 shares of CoreWeave Class A stock in 30 open‑market transactions. Prices clustered around $129–$133 per share, with one block disclosed at a weighted‑average $129.73.

The footnotes clarify these positions are held by specific Magnetar funds and that Magnetar entities, including David J. Snyderman, disclaim beneficial ownership beyond their pecuniary interest. Reported post‑trade balances such as 17,906,250 and 6,788,963 shares indicate the funds retain large stakes, suggesting these sales reflect portfolio adjustments rather than a full exit.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role null | null | null | null
Sold 587,010 shs ($76.26M)
Type Security Shares Price Value
Sale Class A Common Stock 66,918 $129.73 $8.68M
Sale Class A Common Stock 984 $130.00 $128K
Sale Class A Common Stock 1,475 $131.00 $193K
Sale Class A Common Stock 1,966 $132.00 $260K
Sale Class A Common Stock 1,966 $133.00 $261K
Sale Class A Common Stock 212,202 $129.73 $27.53M
Sale Class A Common Stock 3,116 $130.00 $405K
Sale Class A Common Stock 4,672 $131.00 $612K
Sale Class A Common Stock 6,228 $132.00 $822K
Sale Class A Common Stock 6,228 $133.00 $828K
Sale Class A Common Stock 2,876 $129.73 $373K
Sale Class A Common Stock 42 $130.00 $5K
Sale Class A Common Stock 63 $131.00 $8K
Sale Class A Common Stock 84 $132.00 $11K
Sale Class A Common Stock 84 $133.00 $11K
Sale Class A Common Stock 62,016 $129.73 $8.05M
Sale Class A Common Stock 910 $130.00 $118K
Sale Class A Common Stock 1,365 $131.00 $179K
Sale Class A Common Stock 1,820 $132.00 $240K
Sale Class A Common Stock 1,820 $133.00 $242K
Sale Class A Common Stock 85,142 $129.73 $11.05M
Sale Class A Common Stock 1,250 $130.00 $163K
Sale Class A Common Stock 1,875 $131.00 $246K
Sale Class A Common Stock 2,500 $132.00 $330K
Sale Class A Common Stock 2,500 $133.00 $333K
Sale Class A Common Stock 106,724 $129.73 $13.85M
Sale Class A Common Stock 1,566 $130.00 $204K
Sale Class A Common Stock 2,350 $131.00 $308K
Sale Class A Common Stock 3,134 $132.00 $414K
Sale Class A Common Stock 3,134 $133.00 $417K
Holdings After Transaction: Class A Common Stock — 4,160,825 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 $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. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, and Magnetar Longhorn Fund LP, and the manager of 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 administrative 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 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.
Shares sold 587,010 shares Net Class A Common Stock sales by Magnetar-advised funds
Sale transactions 30 trades Number of non-derivative open-market sales reported
Price range $129–$133 per share Approximate range of reported CoreWeave sale prices
Weighted-average price example $129.73 per share Weighted-average sale price disclosed in a footnote
Large fund holding 17,906,250 shares Post-transaction Class A holdings for one Magnetar-advised entity
Other fund holding 6,788,963 shares Post-transaction Class A holdings for another entity
Additional fund holding 4,160,825 shares Post-transaction Class A holdings for a further entity
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.
investment adviser financial
"Magnetar Financial LLC serves as the investment adviser to each of CW Opportunity 2 LP..."
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.
beneficial ownership financial
"Each of the Magnetar Funds...disclaims beneficial ownership of these shares of Common Stock..."
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 regulatory
"reporting persons each indicated as a ten percent owner in the filing metadata."
Form 4 Insider Transactions: What Each Field Means →
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 Stock05/07/2026S66,918D$129.73(1)4,160,825IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S984D$1304,159,841IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S1,475D$1314,158,366IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S1,966D$1324,156,400IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S1,966D$1334,154,434IFootnotes(2)(3)(4)(5)
Class A Common Stock05/07/2026S212,202D$129.73(1)17,906,250IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S3,116D$13017,903,134IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S4,672D$13117,898,462IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S6,228D$13217,892,234IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S6,228D$13317,886,006IFootnotes(2)(3)(4)(6)
Class A Common Stock05/07/2026S2,876D$129.73(1)242,669IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S42D$130242,627IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S63D$131242,564IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S84D$132242,480IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S84D$133242,396IFootnotes(2)(3)(4)(7)
Class A Common Stock05/07/2026S62,016D$129.73(1)3,775,696IFootnotes(2)(3)(4)(8)
Class A Common Stock05/07/2026S910D$1303,774,786IFootnotes(2)(3)(4)(8)
Class A Common Stock05/07/2026S1,365D$1313,773,421IFootnotes(2)(3)(4)(8)
Class A Common Stock05/07/2026S1,820D$1323,771,601IFootnotes(2)(3)(4)(8)
Class A Common Stock05/07/2026S1,820D$1333,769,781IFootnotes(2)(3)(4)(8)
Class A Common Stock05/07/2026S85,142D$129.73(1)4,634,056IFootnotes(2)(3)(4)(9)
Class A Common Stock05/07/2026S1,250D$1304,632,806IFootnotes(2)(3)(4)(9)
Class A Common Stock05/07/2026S1,875D$1314,630,931IFootnotes(2)(3)(4)(9)
Class A Common Stock05/07/2026S2,500D$1324,628,431IFootnotes(2)(3)(4)(9)
Class A Common Stock05/07/2026S2,500D$1334,625,931IFootnotes(2)(3)(4)(9)
Class A Common Stock05/07/2026S106,724D$129.73(1)6,788,963IFootnotes(2)(3)(4)(10)
Class A Common Stock05/07/2026S1,566D$1306,787,397IFootnotes(2)(3)(4)(10)
Class A Common Stock05/07/2026S2,350D$1316,785,047IFootnotes(2)(3)(4)(10)
Class A Common Stock05/07/2026S3,134D$1326,781,913IFootnotes(2)(3)(4)(10)
Class A Common Stock05/07/2026S3,134D$1336,778,779IFootnotes(2)(3)(4)(10)
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 CW Opportunity 2 LP, CW Opportunity LLC, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, and Magnetar Longhorn Fund LP, and the manager of 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 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 CW Opportunity 2 LP.
6. These securities are held directly by CW Opportunity LLC.
7. These securities are held directly by Magnetar Capital Master Fund, Ltd.
8. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
9. These securities are held directly by Magnetar Lake Credit Fund LLC.
10. These securities are held directly by Magnetar Longhorn Fund LP.
/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

FAQ

How many CoreWeave (CRWV) shares did Magnetar-advised funds sell?

Magnetar-advised funds reported selling 587,010 shares of CoreWeave Class A Common Stock. These disposals occurred across 30 separate open-market transactions, as summarized in the filing’s transaction totals.

Do Magnetar entities still hold CoreWeave (CRWV) shares after these sales?

Yes. After the reported sales, individual Magnetar-advised vehicles still show large positions, including 17,906,250 shares, 6,788,963 shares and 4,160,825 shares of Class A Common Stock following specific transactions disclosed in the filing.

Who actually holds the CoreWeave (CRWV) shares linked to Magnetar?

The filing states the shares are held directly by various Magnetar funds, such as CW Opportunity 2 LP, CW Opportunity LLC, and several Magnetar master and credit funds. Magnetar entities and David J. Snyderman disclaim beneficial ownership except for pecuniary interests.

How many CoreWeave (CRWV) sale transactions did the Form 4 report?

The Form 4 reports 30 non-derivative sale transactions in CoreWeave Class A Common Stock. All are coded as open-market or private sales, and together they account for the net disposition of 587,010 shares by the Magnetar-advised funds.