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Magnetar funds trim CoreWeave (CRWV) position with 1.92M-share sale

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

Rhea-AI Filing Summary

Magnetar-affiliated entities reported multiple indirect sales of CoreWeave, Inc. Class A Common Stock. On August 13, 2026, funds advised or managed by Magnetar Financial LLC and related entities sold 1,921,259 shares across 27 open-market or private transactions. Reported prices include $107.75 (a weighted average for certain trades with an actual range of $107.61–$108.48), $110.98, and $115.61 per share. The shares are held directly by various Magnetar funds identified in the notes, and each Magnetar entity and David J. Snyderman disclaims beneficial ownership except to the extent of its or his pecuniary interest.

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Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 1,921,259 shs ($213.78M)
Type Security Shares Price Value
Sale Class A Common Stock F1, F2, F3, F4, F5 26,085 $107.75 $2.81M
Sale Class A Common Stock F2, F3, F4, F5 121,028 $110.98 $13.43M
Sale Class A Common Stock F2, F3, F4, F5 29,301 $115.61 $3.39M
Sale Class A Common Stock F1, F2, F3, F4, F6 89,114 $107.75 $9.60M
Sale Class A Common Stock F2, F3, F4, F6 413,543 $110.98 $45.90M
Sale Class A Common Stock F2, F3, F4, F6 100,120 $115.61 $11.57M
Sale Class A Common Stock F1, F2, F3, F4, F7 44,818 $107.75 $4.83M
Sale Class A Common Stock F2, F3, F4, F7 207,984 $110.98 $23.08M
Sale Class A Common Stock F2, F3, F4, F7 50,354 $115.61 $5.82M
Sale Class A Common Stock F1, F2, F3, F4, F8 1,209 $107.75 $130K
Sale Class A Common Stock F2, F3, F4, F8 5,605 $110.98 $622K
Sale Class A Common Stock F2, F3, F4, F8 1,357 $115.61 $157K
Sale Class A Common Stock F1, F2, F3, F4, F9 26,044 $107.75 $2.81M
Sale Class A Common Stock F2, F3, F4, F9 120,857 $110.98 $13.41M
Sale Class A Common Stock F2, F3, F4, F9 29,260 $115.61 $3.38M
Sale Class A Common Stock F1, F2, F3, F4, F10 35,756 $107.75 $3.85M
Sale Class A Common Stock F2, F3, F4, F10 165,923 $110.98 $18.41M
Sale Class A Common Stock F2, F3, F4, F10 40,170 $115.61 $4.64M
Sale Class A Common Stock F1, F2, F3, F4, F11 38,126 $107.75 $4.11M
Sale Class A Common Stock F2, F3, F4, F11 176,919 $110.98 $19.63M
Sale Class A Common Stock F2, F3, F4, F11 42,832 $115.61 $4.95M
Sale Class A Common Stock F1, F2, F3, F4, F12 18,929 $107.75 $2.04M
Sale Class A Common Stock F2, F3, F4, F12 87,835 $110.98 $9.75M
Sale Class A Common Stock F2, F3, F4, F12 21,265 $115.61 $2.46M
Sale Class A Common Stock F1, F2, F3, F4, F13 3,967 $107.75 $427K
Sale Class A Common Stock F2, F3, F4, F13 18,403 $110.98 $2.04M
Sale Class A Common Stock F2, F3, F4, F13 4,455 $115.61 $515K
holding Class A Common Stock F2, F3, F4, F14 -- -- --
holding Class A Common Stock F2, F3, F4, F15 -- -- --
holding Class A Common Stock F2, F3, F4, F16 -- -- --
Holdings After Transaction: Class A Common Stock — 8,932,892 shares (Indirect, Footnotes)
Footnotes (16)
  1. F1. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $107.61 to $108.48, 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 CW Opportunity 2 LP, CW Opportunity LLC, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC 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 and Magnetar Lake Credit 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 CW Opportunity 2 LP.
  6. F6. These securities are held directly by CW Opportunity LLC.
  7. F7. These securities are held directly by Longhorn Special Opportunities Fund LP.
  8. F8. These securities are held directly by Magnetar Capital Master Fund, Ltd.
  9. F9. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
  10. F10. These securities are held directly by Magnetar Lake Credit Fund LLC.
  11. F11. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
  12. F12. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
  13. F13. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
  14. F14. These securities are held directly by Magnetar Alpha Star Fund LLC.
  15. F15. These securities are held directly by Magnetar Longhorn Fund LP.
  16. F16. These securities are held directly by Magnetar SC Fund Ltd.
Shares sold 1,921,259 shares Total CoreWeave Class A shares sold indirectly by Magnetar-related funds on August 13, 2026
Number of sale transactions 27 Open-market or private sale transactions in CoreWeave Class A Common Stock reported for August 13, 2026
Weighted average price range $107.61–$108.48 per share Price range for trades where $107.75 per share was reported as a weighted average
Other reported sale prices $110.98 and $115.61 per share Per-share prices for additional CoreWeave stock sales on August 13, 2026
Holding entries 3 Indirect ownership holdings in CoreWeave shares reported for additional Magnetar funds
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."
Class A Common Stock financial
"security_title": "Class A Common Stock""
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

What did Magnetar entities report in the Form 4 for CoreWeave (CRWV)?
Magnetar-affiliated entities reported indirect sales of 1,921,259 CoreWeave Class A shares on August 13, 2026. The transactions were executed across 27 open-market or private trades by various Magnetar funds that hold the stock directly.

Who are the reporting persons in the CoreWeave (CRWV) Form 4 filing?
The reporting persons are Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman. They report transactions in CoreWeave shares held by multiple Magnetar funds but disclaim beneficial ownership beyond their pecuniary interests.

Were the CoreWeave (CRWV) shares sold directly by the named Magnetar entities?
No. The filing states the securities are held directly by specific Magnetar funds, such as CW Opportunity 2 LP and other listed vehicles. Magnetar Financial and related entities are advisers or general partners and disclaim beneficial ownership except for their pecuniary interests.

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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)
08/13/2026		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 Stock08/13/2026S26,085D$107.75(1)3,888,088IFootnotes(2)(3)(4)(5)
Class A Common Stock08/13/2026S121,028D$110.983,767,060IFootnotes(2)(3)(4)(5)
Class A Common Stock08/13/2026S29,301D$115.613,737,759IFootnotes(2)(3)(4)(5)
Class A Common Stock08/13/2026S89,114D$107.75(1)16,910,479IFootnotes(2)(3)(4)(6)
Class A Common Stock08/13/2026S413,543D$110.9816,496,936IFootnotes(2)(3)(4)(6)
Class A Common Stock08/13/2026S100,120D$115.6116,396,816IFootnotes(2)(3)(4)(6)
Class A Common Stock08/13/2026S44,818D$107.75(1)1,638,990IFootnotes(2)(3)(4)(7)
Class A Common Stock08/13/2026S207,984D$110.981,431,006IFootnotes(2)(3)(4)(7)
Class A Common Stock08/13/2026S50,354D$115.611,380,652IFootnotes(2)(3)(4)(7)
Class A Common Stock08/13/2026S1,209D$107.75(1)229,172IFootnotes(2)(3)(4)(8)
Class A Common Stock08/13/2026S5,605D$110.98223,567IFootnotes(2)(3)(4)(8)
Class A Common Stock08/13/2026S1,357D$115.61222,210IFootnotes(2)(3)(4)(8)
Class A Common Stock08/13/2026S26,044D$107.75(1)3,484,686IFootnotes(2)(3)(4)(9)
Class A Common Stock08/13/2026S120,857D$110.983,363,829IFootnotes(2)(3)(4)(9)
Class A Common Stock08/13/2026S29,260D$115.613,334,569IFootnotes(2)(3)(4)(9)
Class A Common Stock08/13/2026S35,756D$107.75(1)4,234,523IFootnotes(2)(3)(4)(10)
Class A Common Stock08/13/2026S165,923D$110.984,068,600IFootnotes(2)(3)(4)(10)
Class A Common Stock08/13/2026S40,170D$115.614,028,430IFootnotes(2)(3)(4)(10)
Class A Common Stock08/13/2026S38,126D$107.75(1)6,505,860IFootnotes(2)(3)(4)(11)
Class A Common Stock08/13/2026S176,919D$110.986,328,941IFootnotes(2)(3)(4)(11)
Class A Common Stock08/13/2026S42,832D$115.616,286,109IFootnotes(2)(3)(4)(11)
Class A Common Stock08/13/2026S18,929D$107.75(1)1,891,474IFootnotes(2)(3)(4)(12)
Class A Common Stock08/13/2026S87,835D$110.981,803,639IFootnotes(2)(3)(4)(12)
Class A Common Stock08/13/2026S21,265D$115.611,782,374IFootnotes(2)(3)(4)(12)
Class A Common Stock08/13/2026S3,967D$107.75(1)631,075IFootnotes(2)(3)(4)(13)
Class A Common Stock08/13/2026S18,403D$110.98612,672IFootnotes(2)(3)(4)(13)
Class A Common Stock08/13/2026S4,455D$115.61608,217IFootnotes(2)(3)(4)(13)
Class A Common Stock932,981IFootnotes(2)(3)(4)(14)
Class A Common Stock6,622,946IFootnotes(2)(3)(4)(15)
Class A Common Stock768,748IFootnotes(2)(3)(4)(16)
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 $107.61 to $108.48, 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, Longhorn Special Opportunities Fund LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC 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 and 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 Longhorn Special Opportunities Fund LP.
8. These securities are held directly by Magnetar Capital Master Fund, Ltd.
9. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
10. These securities are held directly by Magnetar Lake Credit Fund LLC.
11. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund. They are not separate legal entities.
12. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
13. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
14. These securities are held directly by Magnetar Alpha Star Fund LLC.
15. These securities are held directly by Magnetar Longhorn Fund LP.
16. 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 LLC08/14/2026
/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 LP08/14/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC08/14/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman08/14/2026
** 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