Key facts
- This page summarizes Magnetar Financial LLC's Form 4 filing for CoreWeave, Inc. (CRWV).
- 10 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 20 Mar 2026, 20:12.
Magnetar Financial LLC - 19 Mar 2026 Form 4 Insider Report for CoreWeave, Inc. (CRWV)
- Reporting relationship
- 10%+ Owner
- Issuer ticker
- CRWV
- Reported as of
- 19 Mar 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 20 Mar 2026, 20:12:50 UTC
- Prior SEC filing
- 02 Mar 2026
- Next SEC filing
- 20 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
-
/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...
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Magnetar Financial LLC filed Form 4 for CoreWeave, Inc. (CRWV) on 20 Mar 2026.
Change
- Previous filing in this sequence was filed on 02 Mar 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (4)
CIK 0001352851
Primary reporting owner
Magnetar Financial LLC
- Relationship
- 10%+ Owner
- Address
- 1603 ORRINGTON AVENUE, 13TH FLOOR, EVANSTON
- Signature
- /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 LLC
- Signature date
- 20 Mar 2026
CIK 0001353085
Magnetar Capital Partners LP
- Relationship
- 10%+ Owner
- Address
- 1603 ORRINGTON AVENUE, 13TH FLOOR, EVANSTON
- Signature
- /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
- Signature date
- 20 Mar 2026
CIK 0001368026
Supernova Management LLC
- Relationship
- 10%+ Owner
- Address
- 1603 ORRINGTON AVENUE, 13TH FLOOR, EVANSTON
- Signature
- /s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC
- Signature date
- 20 Mar 2026
CIK 0001953511
Snyderman David J.
- Relationship
- 10%+ Owner
- Address
- 1603 ORRINGTON AVENUE, 13TH FLOOR, EVANSTON
- Signature
- /s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman
- Signature date
- 20 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CRWV
transaction
Class A Common Stock
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- +179,250
- Change %
- +2.1%
- Price
- $40.00*
- Shares after
- 8,726,113
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F4
CRWV
transaction
Class A Common Stock
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- +16,500
- Change %
- +0.19%
- Price
- $40.00*
- Shares after
- 8,898,243
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F5
CRWV
transaction
Class A Common Stock
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- +51,375
- Change %
- +1.7%
- Price
- $40.00*
- Shares after
- 2,993,770
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F6
CRWV
transaction
Class A Common Stock
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- +8,250
- Change %
- +0.97%
- Price
- $40.00*
- Shares after
- 862,025
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F7
CRWV
transaction
Class A Common Stock
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- +119,625
- Change %
- +1.9%
- Price
- $40.00*
- Shares after
- 6,316,786
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F8
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,502,483
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F9
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 22,100,199
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F10
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,973,782
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F11
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,561,485
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F12
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 299,512
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F13
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 5,001,372
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F14
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,175,441
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F15
CRWV
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 3,155,183
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Footnotes
- F1, F2, F3, F16
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CRWV
transaction
Derivative
Right to Purchase
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- -179,250
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Underlying class
- Class A Common Stock
- Underlying amount
- 179,250
- Exercise price
- $40.00
- Footnotes
- F1, F2, F3, F4
CRWV
transaction
Derivative
Right to Purchase
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- -16,500
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Underlying class
- Class A Common Stock
- Underlying amount
- 16,500
- Exercise price
- $40.00
- Footnotes
- F1, F2, F3, F5
CRWV
transaction
Derivative
Right to Purchase
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- -51,375
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Underlying class
- Class A Common Stock
- Underlying amount
- 51,375
- Exercise price
- $40.00
- Footnotes
- F1, F2, F3, F6
CRWV
transaction
Derivative
Right to Purchase
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- -8,250
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Underlying class
- Class A Common Stock
- Underlying amount
- 8,250
- Exercise price
- $40.00
- Footnotes
- F1, F2, F3, F7
CRWV
transaction
Derivative
Right to Purchase
Exercise of in-the-money or at-the-money derivative security
- Transaction value
- Shares
- -119,625
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 19 Mar 2026
- Ownership
- Footnotes
- Underlying class
- Class A Common Stock
- Underlying amount
- 119,625
- Exercise price
- $40.00
- Footnotes
- F1, F2, F3, F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 16 footnotes
Footnote F1
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, Magnetar Xing He Master Fund Ltd, Purpose Alternative Credit Fund - F LLC, and Purpose Alternative Credit Fund - T LLC, 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").
Footnote F2
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.
Footnote F3
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.
Footnote F4
These securities are held directly by Magnetar Structured Credit Fund, LP.
Footnote F5
These securities are held directly by Magnetar Longhorn Fund LP.
Footnote F6
These securities are held directly by Purpose Alternative Credit Fund - F LLC.
Footnote F7
These securities are held directly by Purpose Alternative Credit Fund - T LLC.
Footnote F8
These securities are held directly by Magnetar Lake Credit Fund LLC.
Footnote F9
These securities are held directly by CW Opportunity 2 LP.
Footnote F10
These securities are held directly by CW Opportunity LLC.
Footnote F11
These securities are held directly by Longhorn Special Opportunities Fund LP.
Footnote F12
These securities are held directly by Magnetar Alpha Star Fund LLC.
Footnote F13
These securities are held directly by Magnetar Capital Master Fund, Ltd.
Footnote F14
These securities are held directly by Magnetar Constellation Master Fund, Ltd.
Footnote F15
These securities are held directly by Magnetar SC Fund Ltd.
Footnote F16
These securities are held directly by Magnetar Xing He Master Fund Ltd.