STOCK TITAN

Form 4: Magnetar-Linked Entities Sell CoreWeave Shares, Retain Large Holdings

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

Rhea-AI Filing Summary

Magnetar-related reporting persons disclosed multiple sales of CoreWeave, Inc. (CRWV) Class A common stock on 09/17/2025. The Form 4 lists numerous dispositions executed at weighted-average prices in several ranges (approximately $118.50–$121.50 per share), with individual line items showing sales from 1,218 shares up to 206,824 shares. Post-transaction beneficial ownership figures appear throughout the filing, with several indirect holdings reported in the millions of shares (examples include 28,251,939, 11,178,750 and 9,531,882 shares). Footnotes explain the reporting chain: Magnetar Financial LLC is adviser to multiple Magnetar funds, Magnetar Capital Partners LP is the sole member of Magnetar Financial, Supernova Management LLC is the general partner, and David J. Snyderman is manager; each disclaims beneficial ownership except for pecuniary interest. The transactions were signed by an attorney-in-fact on behalf of the reporting parties.

Positive

  • Detailed disclosure of multiple transactions including weighted-average price ranges and post-transaction ownership balances
  • Clear attribution of reporting chain (Magnetar Funds, Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, David J. Snyderman) with disclaimers
  • Signed and dated filings with attorney-in-fact attestations, indicating procedural compliance

Negative

  • Large aggregate dispositions reported on a single day (multiple lines show six-figure share sales), which may be viewed negatively by some investors
  • Form does not disclose the aggregate total number of shares sold across all line items in a single summary figure

Insights

TL;DR Multiple large, disclosed sales by Magnetar-affiliated entities on 09/17/2025 at prices near $119–$121 per share; substantial indirect holdings remain.

The filing documents an extensive set of dispositions of Class A common stock executed the same day across many accounts managed or affiliated with Magnetar. Weighted-average prices and ranges are provided in footnotes, and the post-sale beneficial ownership balances shown in the table indicate the reporting group continues to hold material indirect positions in CRWV. For analysts, the key facts are the transaction date, price ranges, and the retained indirect holdings reported in the millions of shares; the filing is a compliance disclosure rather than an explanatory statement of strategy.

TL;DR Form 4 properly discloses insider-related sales and the reporting structure; filings include clear attribution and disclaimers.

The Form 4 includes detailed footnotes clarifying the relationship among entities (adviser, parent, general partner, manager) and states disclaimers of beneficial ownership except for pecuniary interest, meeting standard disclosure practices. The signature block shows an attorney-in-fact executed the filing. From a governance perspective, the filing is thorough on attribution and pricing transparency, with weighted-average price ranges and offer to provide transaction-level details upon request.

Insider Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, Snyderman David J.
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner
Sold 1,271,277 shs ($152.68M)
Type Security Shares Price Value
Sale Class A Common Stock 18,457 $118.96 $2.20M
Sale Class A Common Stock 45,850 $119.87 $5.50M
Sale Class A Common Stock 29,443 $121.00 $3.56M
Sale Class A Common Stock 4,556 $121.50 $554K
Sale Class A Common Stock 89,695 $119.06 $10.68M
Sale Class A Common Stock 206,824 $119.97 $24.81M
Sale Class A Common Stock 110,398 $121.17 $13.38M
Sale Class A Common Stock 11,761 $119.06 $1.40M
Sale Class A Common Stock 27,115 $119.97 $3.25M
Sale Class A Common Stock 14,473 $121.17 $1.75M
Sale Class A Common Stock 1,218 $119.06 $145K
Sale Class A Common Stock 2,805 $119.97 $337K
Sale Class A Common Stock 1,497 $121.17 $181K
Sale Class A Common Stock 26,217 $119.06 $3.12M
Sale Class A Common Stock 60,445 $119.97 $7.25M
Sale Class A Common Stock 32,265 $121.17 $3.91M
Sale Class A Common Stock 35,993 $119.06 $4.29M
Sale Class A Common Stock 82,986 $119.97 $9.96M
Sale Class A Common Stock 44,297 $121.17 $5.37M
Sale Class A Common Stock 45,109 $119.06 $5.37M
Sale Class A Common Stock 104,020 $119.97 $12.48M
Sale Class A Common Stock 55,525 $121.17 $6.73M
Sale Class A Common Stock 10,192 $119.06 $1.21M
Sale Class A Common Stock 23,500 $119.97 $2.82M
Sale Class A Common Stock 12,544 $121.17 $1.52M
Sale Class A Common Stock 38,376 $119.06 $4.57M
Sale Class A Common Stock 88,484 $119.97 $10.62M
Sale Class A Common Stock 47,232 $121.17 $5.72M
Holdings After Transaction: Class A Common Stock — 7,001,556 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 $118.50 to $119.49, 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, 5 and 6. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.50 to $120.24, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.50 to $121.46, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $118.75 to $119.50, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.75 to $120.51, inclusive. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.95 to $121.50, inclusive. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and 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 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 Alpha Star Fund 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. These securities are held directly by Magnetar SC Fund Ltd. These securities are held directly by Magnetar Structured Credit Fund, LP.
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).
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)
09/17/2025
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 09/17/2025 S 18,457 D $118.96(1) 7,001,556 I Footnotes(7)(8)(9)(10)
Class A Common Stock 09/17/2025 S 45,850 D $119.87(2) 6,955,706 I Footnotes(7)(8)(9)(10)
Class A Common Stock 09/17/2025 S 29,443 D $121(3) 6,926,263 I Footnotes(7)(8)(9)(10)
Class A Common Stock 09/17/2025 S 4,556 D $121.5 6,921,707 I Footnotes(7)(8)(9)(10)
Class A Common Stock 09/17/2025 S 89,695 D $119.06(4) 28,251,939 I Footnotes(7)(8)(9)(11)
Class A Common Stock 09/17/2025 S 206,824 D $119.97(5) 28,045,115 I Footnotes(7)(8)(9)(11)
Class A Common Stock 09/17/2025 S 110,398 D $121.17(6) 27,934,717 I Footnotes(7)(8)(9)(11)
Class A Common Stock 09/17/2025 S 11,761 D $119.06(4) 2,368,029 I Footnotes(7)(8)(9)(12)
Class A Common Stock 09/17/2025 S 27,115 D $119.97(5) 2,340,914 I Footnotes(7)(8)(9)(12)
Class A Common Stock 09/17/2025 S 14,473 D $121.17(6) 2,326,441 I Footnotes(7)(8)(9)(12)
Class A Common Stock 09/17/2025 S 1,218 D $119.06(4) 382,950 I Footnotes(7)(8)(9)(13)
Class A Common Stock 09/17/2025 S 2,805 D $119.97(5) 380,145 I Footnotes(7)(8)(9)(13)
Class A Common Stock 09/17/2025 S 1,497 D $121.17(6) 378,648 I Footnotes(7)(8)(9)(13)
Class A Common Stock 09/17/2025 S 26,217 D $119.06(4) 6,799,292 I Footnotes(7)(8)(9)(14)
Class A Common Stock 09/17/2025 S 60,445 D $119.97(5) 6,738,847 I Footnotes(7)(8)(9)(14)
Class A Common Stock 09/17/2025 S 32,265 D $121.17(6) 6,706,582 I Footnotes(7)(8)(9)(14)
Class A Common Stock 09/17/2025 S 35,993 D $119.06(4) 8,665,444 I Footnotes(7)(8)(9)(15)
Class A Common Stock 09/17/2025 S 82,986 D $119.97(5) 8,582,458 I Footnotes(7)(8)(9)(15)
Class A Common Stock 09/17/2025 S 44,297 D $121.17(6) 8,538,161 I Footnotes(7)(8)(9)(15)
Class A Common Stock 09/17/2025 S 45,109 D $119.06(4) 9,531,882 I Footnotes(7)(8)(9)(16)
Class A Common Stock 09/17/2025 S 104,020 D $119.97(5) 9,427,862 I Footnotes(7)(8)(9)(16)
Class A Common Stock 09/17/2025 S 55,525 D $121.17(6) 9,372,337 I Footnotes(7)(8)(9)(16)
Class A Common Stock 09/17/2025 S 10,192 D $119.06(4) 1,874,495 I Footnotes(7)(8)(9)(17)
Class A Common Stock 09/17/2025 S 23,500 D $119.97(5) 1,850,995 I Footnotes(7)(8)(9)(17)
Class A Common Stock 09/17/2025 S 12,544 D $121.17(6) 1,838,451 I Footnotes(7)(8)(9)(17)
Class A Common Stock 09/17/2025 S 38,376 D $119.06(4) 11,178,750 I Footnotes(7)(8)(9)(18)
Class A Common Stock 09/17/2025 S 88,484 D $119.97(5) 11,090,266 I Footnotes(7)(8)(9)(18)
Class A Common Stock 09/17/2025 S 47,232 D $121.17(6) 11,043,034 I Footnotes(7)(8)(9)(18)
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 $118.50 to $119.49, 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, 5 and 6.
2. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.50 to $120.24, inclusive.
3. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.50 to $121.46, inclusive.
4. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $118.75 to $119.50, inclusive.
5. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $119.75 to $120.51, inclusive.
6. The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $120.95 to $121.50, inclusive.
7. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, CW Opportunity 2 LP, Magnetar Capital Master Fund, Ltd, Magnetar Constellation Master Fund, Ltd, Magnetar Longhorn Fund LP, Magnetar SC Fund Ltd, the general partner of Magnetar Structured Credit Fund, LP and the manager of Magnetar Alpha Star Fund LLC and Magnetar Lake Credit Fund LLC (collectively, the "Magnetar Funds").
8. 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.
9. 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.
10. These securities are held directly by CW Opportunity 2 LP.
11. These securities are held directly by CW Opportunity LLC.
12. These securities are held directly by Magnetar Alpha Star Fund LLC.
13. These securities are held directly by Magnetar Capital Master Fund, Ltd.
14. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
15. These securities are held directly by Magnetar Lake Credit Fund LLC.
16. These securities are held directly by Magnetar Longhorn Fund LP.
17. These securities are held directly by Magnetar SC Fund Ltd.
18. These securities are held directly by Magnetar Structured Credit 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 09/17/2025
/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 09/17/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Manager of Supernova Management LLC 09/17/2025
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman 09/17/2025
** 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.

FAQ

What transactions did the Form 4 report for CoreWeave (CRWV)?

The Form 4 reports multiple sales of Class A common stock on 09/17/2025 by Magnetar-related reporting persons, with individual sales ranging from 1,218 to 206,824 shares at weighted-average prices in ranges of approximately $118.50–$121.50 per share.

Who are the reporting persons named on the Form 4 for CRWV?

The reporting persons include Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, with footnotes describing adviser/parent/GP/manager relationships.

How much beneficial ownership remained after the reported sales?

The filing shows numerous post-transaction indirect ownership figures, with several entries in the millions of shares (examples: 28,251,939, 11,178,750, 9,531,882), as listed on the Form 4 table.

What price information is disclosed in the Form 4?

Prices are reported as weighted-average prices with footnote ranges: e.g., $118.50–$119.49, $119.50–$120.24, $120.50–$121.46, and similar ranges for other line items.

Did the filing explain the relationship among the Magnetar entities?

Yes. Footnotes explain that Magnetar Financial is adviser to multiple Magnetar funds, Magnetar Capital Partners is sole member of Magnetar Financial, Supernova Management is the general partner, and David J. Snyderman is the manager.