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[Form 4] CoreWeave, Inc. Insider Trading Activity

CoreWeave, Inc. (symbol: CRWV) is the issuer of record for a Form 4 filing submitted to the SEC.

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

CoreWeave, Inc. (symbol: CRWV) is the issuer of record for a Form 4 filing submitted to the SEC.

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
Type Security Shares Price Value
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F5 881,551 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F5 881,551 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F6 115,575 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F6 115,575 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F7 11,949 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F7 11,949 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F8 257,634 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F8 257,634 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F9 353,703 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F9 353,703 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F10 443,363 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F10 443,363 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F11 100,176 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F11 100,176 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F12 377,144 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F12 377,144 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F13 232,434 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F13 232,434 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F14 187,241 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F14 187,241 $0.00 $0.00
Derivative Expiration Call option (obligation to sell) F1, F2, F3, F4, F15 39,230 $0.00 $0.00
Derivative Expiration Put option (right to sell) F1, F16, F2, F3, F4, F15 39,230 $0.00 $0.00
Holdings After Transaction: Call option (obligation to sell) — 0 contracts (Indirect, Footnotes); Put option (right to sell) — 0 contracts (Indirect, Footnotes)
Footnotes (16)
  1. F1. In connection with the expiration of a call option and a put option entered into on August 18, 2025, as part of a collar arrangement, both options expired unexercised and for no value on September 18, 2026, as the closing price of the Class A Common Stock on such date was between the call strike price and the put strike price.
  2. F2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, 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 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 LLC.
  6. F6. These securities are held directly by Magnetar Alpha Star Fund LLC.
  7. F7. These securities are held directly by Magnetar Capital Master Fund, Ltd.
  8. F8. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
  9. F9. These securities are held directly by Magnetar Lake Credit Fund LLC.
  10. F10. These securities are held directly by Magnetar Longhorn Fund LP.
  11. F11. These securities are held directly by Magnetar SC Fund Ltd.
  12. F12. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities).
  13. F13. These securities are held directly by Magnetar Xing He Master Fund Ltd.
  14. F14. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
  15. F15. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
  16. F16. Expiration of a long derivative security for no value, transaction code "K" only.

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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)
09/18/2026		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
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
Call option (obligation to sell)$18009/18/2026E/K(1)881,55109/18/202609/18/2026Class A Common Stock881,551$00IFootnotes(2)(3)(4)(5)
Put option (right to sell)$7509/18/2026E/K(1)(16)881,55109/18/202609/18/2026Class A Common Stock881,551$00IFootnotes(2)(3)(4)(5)
Call option (obligation to sell)$18009/18/2026E/K(1)115,57509/18/202609/18/2026Class A Common Stock115,575$00IFootnotes(2)(3)(4)(6)
Put option (right to sell)$7509/18/2026E/K(1)(16)115,57509/18/202609/18/2026Class A Common Stock115,575$00IFootnotes(2)(3)(4)(6)
Call option (obligation to sell)$18009/18/2026E/K(1)11,94909/18/202609/18/2026Class A Common Stock11,949$00IFootnotes(2)(3)(4)(7)
Put option (right to sell)$7509/18/2026E/K(1)(16)11,94909/18/202609/18/2026Class A Common Stock11,949$00IFootnotes(2)(3)(4)(7)
Call option (obligation to sell)$18009/18/2026E/K(1)257,63409/18/202609/18/2026Class A Common Stock257,634$00IFootnotes(2)(3)(4)(8)
Put option (right to sell)$7509/18/2026E/K(1)(16)257,63409/18/202609/18/2026Class A Common Stock257,634$00IFootnotes(2)(3)(4)(8)
Call option (obligation to sell)$18009/18/2026E/K(1)353,70309/18/202609/18/2026Class A Common Stock353,703$00IFootnotes(2)(3)(4)(9)
Put option (right to sell)$7509/18/2026E/K(1)(16)353,70309/18/202609/18/2026Class A Common Stock353,703$00IFootnotes(2)(3)(4)(9)
Call option (obligation to sell)$18009/18/2026E/K(1)443,36309/18/202609/18/2026Class A Common Stock443,363$00IFootnotes(2)(3)(4)(10)
Put option (right to sell)$7509/18/2026E/K(1)(16)443,36309/18/202609/18/2026Class A Common Stock443,363$00IFootnotes(2)(3)(4)(10)
Call option (obligation to sell)$18009/18/2026E/K(1)100,17609/18/202609/18/2026Class A Common Stock100,176$00IFootnotes(2)(3)(4)(11)
Put option (right to sell)$7509/18/2026E/K(1)(16)100,17609/18/202609/18/2026Class A Common Stock100,176$00IFootnotes(2)(3)(4)(11)
Call option (obligation to sell)$18009/18/2026E/K(1)377,14409/18/202609/18/2026Class A Common Stock377,144$00IFootnotes(2)(3)(4)(12)
Put option (right to sell)$7509/18/2026E/K(1)(16)377,14409/18/202609/18/2026Class A Common Stock377,144$00IFootnotes(2)(3)(4)(12)
Call option (obligation to sell)$18009/18/2026E/K(1)232,43409/18/202609/18/2026Class A Common Stock232,434$00IFootnotes(2)(3)(4)(13)
Put option (right to sell)$7509/18/2026E/K(1)(16)232,43409/18/202609/18/2026Class A Common Stock232,434$00IFootnotes(2)(3)(4)(13)
Call option (obligation to sell)$18009/18/2026E/K(1)187,24109/18/202609/18/2026Class A Common Stock187,241$00IFootnotes(2)(3)(4)(14)
Put option (right to sell)$7509/18/2026E/K(1)(16)187,24109/18/202609/18/2026Class A Common Stock187,241$00IFootnotes(2)(3)(4)(14)
Call option (obligation to sell)$18009/18/2026E/K(1)39,23009/18/202609/18/2026Class A Common Stock39,230$00IFootnotes(2)(3)(4)(15)
Put option (right to sell)$7509/18/2026E/K(1)(16)39,23009/18/202609/18/2026Class A Common Stock39,230$00IFootnotes(2)(3)(4)(15)
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. In connection with the expiration of a call option and a put option entered into on August 18, 2025, as part of a collar arrangement, both options expired unexercised and for no value on September 18, 2026, as the closing price of the Class A Common Stock on such date was between the call strike price and the put strike price.
2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of CW Opportunity LLC, 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 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 LLC.
6. These securities are held directly by Magnetar Alpha Star Fund LLC.
7. These securities are held directly by Magnetar Capital Master Fund, Ltd.
8. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
9. These securities are held directly by Magnetar Lake Credit Fund LLC.
10. These securities are held directly by Magnetar Longhorn Fund LP.
11. These securities are held directly by Magnetar SC Fund Ltd.
12. These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities).
13. These securities are held directly by Magnetar Xing He Master Fund Ltd.
14. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
15. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
16. Expiration of a long derivative security for no value, transaction code "K" only.
/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 LLC09/18/2026
/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 LP09/18/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC09/18/2026
/s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman09/18/2026
** 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

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