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

Form 4: Magnetar entities report sizable CoreWeave (CRWV) stock sales

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

Rhea-AI Filing Summary

Magnetar-related entities reported multiple sales of CoreWeave, Inc. (CRWV) Class A common stock on 09/19/2025. The Form 4 shows a series of dispositions executed at weighted-average prices ranging from about $121.78 to $128.66 per share. The filing lists specific sale lots and remaining indirect beneficial ownership positions, including reported holdings of 4,107,731, 1,097,932, 1,064,159 and an aggregate reported indirect position of 9,202,863 shares. The reporting persons include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman, who are identified as directors and 10% owners; footnotes state they disclaim beneficial ownership except for pecuniary interest and identify which fund holds each lot.

Positive

  • Detailed disclosure of each sale lot with weighted-average prices and ranges is provided, enabling transparency for investors
  • Clear ownership structure and appropriate footnote disclaimers identify the funds and reporting chain

Negative

  • Significant insider sales by Magnetar-affiliated entities on 09/19/2025 may be perceived negatively by some investors
  • Large blocks sold across multiple price points could exert near-term selling pressure on CRWV shares

Insights

TL;DR: Large insider sales by a 10% owner may affect market perception despite retained substantial indirect holdings.

The Form 4 documents multiple block sales by Magnetar-affiliated entities on 09/19/2025 at weighted-average prices between approximately $121.78 and $128.66. These disposals are broken into distinct lots across three funds with continuing indirect positions reported (notably figures of 4,107,731; 1,097,932; 1,064,159 and an aggregate indirect position of 9,202,863 shares). From an investor-relations perspective, materialized sales by large holders can create downward pressure or signal portfolio rebalancing, even though footnotes disclaim direct beneficial ownership beyond pecuniary interest. No derivative transactions or option exercises are reported in Table II.

TL;DR: Reporting chain is clear; filings attribute holdings to specific funds and include required disclaimers.

The filing names the reporting entities and explains ownership structure: Magnetar Financial advises the Magnetar Funds; Magnetar Capital Partners is the parent; Supernova Management is general partner; David J. Snyderman is manager. Footnotes properly disclose which fund directly holds each block and include the standard disclaimer of beneficial ownership except for pecuniary interest. Signatures and attorney-in-fact attestations are present. The disclosure appears procedurally complete for Section 16 reporting.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 197,336 shs ($24.78M)
Type Security Shares Price Value
Sale Class A Common Stock 1,934 $121.90 $236K
Sale Class A Common Stock 21,987 $124.67 $2.74M
Sale Class A Common Stock 104,056 $125.30 $13.04M
Sale Class A Common Stock 19,058 $126.60 $2.41M
Sale Class A Common Stock 14,657 $127.96 $1.88M
Sale Class A Common Stock 1,466 $128.66 $189K
Sale Class A Common Stock 405 $121.90 $49K
Sale Class A Common Stock 4,605 $124.67 $574K
Sale Class A Common Stock 21,800 $125.30 $2.73M
Sale Class A Common Stock 3,991 $126.60 $505K
Sale Class A Common Stock 3,070 $127.96 $393K
Sale Class A Common Stock 307 $128.66 $39K
holding Class A Common Stock -- -- --
Holdings After Transaction: Class A Common Stock — 4,107,731 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 $121.78 to $122.03, 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, 3, 4 and 5. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $124.00 to $124.95, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $125.00 to $125.76, inclusive. 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 $126.98, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $127.58 to $128.30, inclusive. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Longhorn Fund LP, 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 Purpose Alternative Credit Fund - F LLC. These securities are held directly by Purpose Alternative Credit Fund - T LLC. These securities are held directly by Magnetar Longhorn Fund LP.
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)
09/19/2025
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 09/19/2025 S 1,934 D $121.9(1) 4,107,731 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 21,987 D $124.67(2) 4,085,744 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 104,056 D $125.3(3) 3,981,688 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 19,058 D $126.6(4) 3,962,630 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 14,657 D $127.96(5) 3,947,973 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 1,466 D $128.66 3,946,507 I Footnotes(6)(7)(8)(9)
Class A Common Stock 09/19/2025 S 405 D $121.9(1) 1,097,932 I Footnotes(6)(7)(8)(10)
Class A Common Stock 09/19/2025 S 4,605 D $124.67(2) 1,093,327 I Footnotes(6)(7)(8)(10)
Class A Common Stock 09/19/2025 S 21,800 D $125.3(3) 1,071,527 I Footnotes(6)(7)(8)(10)
Class A Common Stock 09/19/2025 S 3,991 D $126.6(4) 1,067,536 I Footnotes(6)(7)(8)(10)
Class A Common Stock 09/19/2025 S 3,070 D $127.96(5) 1,064,466 I Footnotes(6)(7)(8)(10)
Class A Common Stock 09/19/2025 S 307 D $128.66 1,064,159 I Footnotes(6)(7)(8)(10)
Class A Common Stock 9,202,863 I Footnotes(6)(7)(8)(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)
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 $121.78 to $122.03, 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, 3, 4 and 5.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $124.00 to $124.95, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $125.00 to $125.76, inclusive.
4. 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 $126.98, inclusive.
5. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $127.58 to $128.30, inclusive.
6. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of Magnetar Longhorn Fund LP, Purpose Alternative Credit Fund - F LLC and Purpose Alternative Credit Fund - T LLC (collectively, the "Magnetar Funds").
7. 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.
8. 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.
9. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
10. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
11. These securities are held directly by Magnetar Longhorn Fund LP.
/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 insider transactions were reported for CoreWeave (CRWV) on 09/19/2025?

Magnetar-affiliated entities reported multiple sales of Class A common stock on 09/19/2025 executed at weighted-average prices roughly between $121.78 and $128.66 per share.

Who filed the Form 4 for CRWV and what is their relationship to the company?

The Form 4 was filed by Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman, each identified as director and 10% owner (per the filing).

How many CRWV shares remain beneficially owned according to the filing?

The filing reports various indirect beneficial ownership figures, including 4,107,731, 1,097,932, 1,064,159 and an aggregate indirect position of 9,202,863 shares.

Were any derivative transactions reported in this Form 4 for CRWV?

No derivative transactions are reported in Table II; the filing only documents non-derivative dispositions of Class A common stock.

Do the reporting persons claim beneficial ownership of the sold shares?

Footnotes state that the Magnetar Funds and related entities disclaim beneficial ownership of the shares except to the extent of their pecuniary interest and identify which fund holds each lot.