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  4. [Form 4] CoreWeave, Inc. Insider Trading Activity

Magnetar funds sell 349K CoreWeave (CRWV) shares in open market

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

Rhea-AI Filing Summary

Magnetar-managed funds reported open-market sales of CoreWeave, Inc. Class A Common Stock. On May 5, 2026, entities advised by Magnetar Financial LLC sold a total of 349,437 shares of CoreWeave at prices generally between $126.00 and $129.51 per share.

The shares are held indirectly through funds including Magnetar Structured Credit Fund LP DBA Magnetar Constellation Onshore Fund, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund vehicles, Longhorn Special Opportunities Fund LP and Magnetar SC Fund Ltd. Magnetar Financial, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman each disclaim beneficial ownership except to the extent of their pecuniary interest.

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 349,437 shs ($44.61M)
Type Security Shares Price Value
Sale Class A Common Stock 6,883 $126.29 $869K
Sale Class A Common Stock 122,950 $127.49 $15.67M
Sale Class A Common Stock 13,676 $128.56 $1.76M
Sale Class A Common Stock 14,120 $129.11 $1.82M
Sale Class A Common Stock 4,239 $126.29 $535K
Sale Class A Common Stock 75,776 $127.49 $9.66M
Sale Class A Common Stock 8,431 $128.56 $1.08M
Sale Class A Common Stock 8,704 $129.11 $1.12M
Sale Class A Common Stock 3,417 $126.29 $432K
Sale Class A Common Stock 61,040 $127.49 $7.78M
Sale Class A Common Stock 6,790 $128.56 $873K
Sale Class A Common Stock 7,011 $129.11 $905K
Sale Class A Common Stock 715 $126.29 $90K
Sale Class A Common Stock 12,791 $127.49 $1.63M
Sale Class A Common Stock 1,424 $128.56 $183K
Sale Class A Common Stock 1,470 $129.11 $190K
holding Class A Common Stock -- -- --
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 7,414,202 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 $126.00 to $126.55, 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, and 4. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $127.00 to $127.95, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $128.00 to $128.90, inclusive. 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 $129.51, inclusive. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each 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 and the general partner of Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), (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 Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities. 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 Longhorn Special Opportunities Fund LP. These securities are held directly by Magnetar SC Fund Ltd.
Shares sold 349,437 shares Total CoreWeave Class A shares sold on May 5, 2026
Number of sale transactions 16 transactions Non-derivative open-market or private sales of Class A Common Stock
Reported sale prices $126.29–$129.11 per share Weighted-average prices disclosed for individual Form 4 line items
Underlying trade ranges $126.00–$129.51 per share Price ranges for multiple trades noted in footnotes F1–F4
Example post-transaction holding 7,414,202 shares Total shares following one reported transaction for an indirect holding
Net share direction 349,437 net shares sold transactionSummary indicates net-sell activity across all reported trades
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 regulatory
"disclaims beneficial ownership of these shares of Common Stock of the Issuer"
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
"except to the extent of its or his pecuniary interest therein"
investment adviser financial
"Magnetar Financial LLC serves as the investment adviser to each Longhorn Special Opportunities Fund 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.
ten percent owner regulatory
"is_ten_percent_owner": 1"
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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider activity did Magnetar entities report for CoreWeave (CRWV)?
Magnetar-advised funds reported selling 349,437 shares of CoreWeave Class A Common Stock in open-market transactions on May 5, 2026. The trades were executed across multiple funds that collectively are ten percent owners, at prices mostly between $126.00 and $129.51 per share.

How many CoreWeave (CRWV) shares did the Magnetar funds sell and at what prices?
The Magnetar funds sold 349,437 CoreWeave Class A shares in 16 separate open-market transactions. Reported weighted-average sale prices ranged from about $126.29 to $129.11 per share, with detailed footnotes noting underlying trade ranges from $126.00 up to $129.51 per share.

Who actually holds the CoreWeave (CRWV) shares reported in this Form 4?
The shares are held directly by several Magnetar-managed vehicles, including Magnetar Structured Credit Fund LP DBA Magnetar Constellation Onshore Fund, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund entities, Longhorn Special Opportunities Fund LP, and Magnetar SC Fund Ltd, rather than by individuals personally.

Are the CoreWeave (CRWV) sales by Magnetar funds open-market or private transactions?
The Form 4 classifies the trades as sales of non-derivative Class A Common Stock in open-market or private transactions. Footnotes indicate weighted-average prices and specify that the shares were sold in multiple transactions within stated price ranges on May 5, 2026.
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)
05/05/2026		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 Stock05/05/2026S6,883D$126.29(1)7,414,202IFootnotes(5)(6)(7)(8)
Class A Common Stock05/05/2026S122,950D$127.49(2)7,291,252IFootnotes(5)(6)(7)(8)
Class A Common Stock05/05/2026S13,676D$128.56(3)7,277,576IFootnotes(5)(6)(7)(8)
Class A Common Stock05/05/2026S14,120D$129.11(4)7,263,456IFootnotes(5)(6)(7)(8)
Class A Common Stock05/05/2026S4,239D$126.29(1)2,346,641IFootnotes(5)(6)(7)(9)
Class A Common Stock05/05/2026S75,776D$127.49(2)2,270,865IFootnotes(5)(6)(7)(9)
Class A Common Stock05/05/2026S8,431D$128.56(3)2,262,434IFootnotes(5)(6)(7)(9)
Class A Common Stock05/05/2026S8,704D$129.11(4)2,253,730IFootnotes(5)(6)(7)(9)
Class A Common Stock05/05/2026S3,417D$126.29(1)2,342,442IFootnotes(5)(6)(7)(10)
Class A Common Stock05/05/2026S61,040D$127.49(2)2,281,402IFootnotes(5)(6)(7)(10)
Class A Common Stock05/05/2026S6,790D$128.56(3)2,274,612IFootnotes(5)(6)(7)(10)
Class A Common Stock05/05/2026S7,011D$129.11(4)2,267,601IFootnotes(5)(6)(7)(10)
Class A Common Stock05/05/2026S715D$126.29(1)725,568IFootnotes(5)(6)(7)(11)
Class A Common Stock05/05/2026S12,791D$127.49(2)712,777IFootnotes(5)(6)(7)(11)
Class A Common Stock05/05/2026S1,424D$128.56(3)711,353IFootnotes(5)(6)(7)(11)
Class A Common Stock05/05/2026S1,470D$129.11(4)709,883IFootnotes(5)(6)(7)(11)
Class A Common Stock1,973,782IFootnotes(5)(6)(7)(12)
Class A Common Stock870,409IFootnotes(5)(6)(7)(13)
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 $126.00 to $126.55, 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, and 4.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $127.00 to $127.95, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $128.00 to $128.90, inclusive.
4. 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 $129.51, inclusive.
5. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each 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 and the general partner of Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities), (collectively, the "Magnetar Funds").
6. 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.
7. 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.
8. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
9. These securities are held directly by Magnetar Xing He Master Fund Ltd.
10. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
11. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
12. These securities are held directly by Longhorn Special Opportunities Fund LP.
13. These securities are held directly by Magnetar SC 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 LLC05/06/2026
/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 LP05/06/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC05/06/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman05/06/2026
** 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