| 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 |
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| 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*
(Street)
(Country) | 2. Issuer Name and Ticker or Trading Symbol
CoreWeave, Inc. [ CRWV ] | 5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
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| 2a. Foreign Trading Symbol
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| 3. Date of Earliest Transaction
(Month/Day/Year) 03/20/2026 | 6. Individual or Joint/Group Filing (Check Applicable Line)
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| 4. If Amendment, Date of Original Filed
(Month/Day/Year) |
| Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ||||||||||
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| 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 | ||||||
| Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) | |||||||||||||||
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| 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 | ||||||||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 235,080 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 235,080 | $0 | 0 | I | Footnotes(2)(3)(4)(5) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 235,080 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 235,080 | $0 | 0 | I | Footnotes(2)(3)(4)(5) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 30,820 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 30,820 | $0 | 0 | I | Footnotes(2)(3)(4)(6) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 30,820 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 30,820 | $0 | 0 | I | Footnotes(2)(3)(4)(6) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 3,187 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 3,187 | $0 | 0 | I | Footnotes(2)(3)(4)(7) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 3,187 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 3,187 | $0 | 0 | I | Footnotes(2)(3)(4)(7) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 68,703 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 68,703 | $0 | 0 | I | Footnotes(2)(3)(4)(8) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 68,703 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 68,703 | $0 | 0 | I | Footnotes(2)(3)(4)(8) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 94,321 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 94,321 | $0 | 0 | I | Footnotes(2)(3)(4)(9) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 94,321 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 94,321 | $0 | 0 | I | Footnotes(2)(3)(4)(9) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 118,230 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 118,230 | $0 | 0 | I | Footnotes(2)(3)(4)(10) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 118,230 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 118,230 | $0 | 0 | I | Footnotes(2)(3)(4)(10) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 26,713 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 26,713 | $0 | 0 | I | Footnotes(2)(3)(4)(11) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 26,713 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 26,713 | $0 | 0 | I | Footnotes(2)(3)(4)(11) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 100,572 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 100,572 | $0 | 0 | I | Footnotes(2)(3)(4)(12) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 100,572 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 100,572 | $0 | 0 | I | Footnotes(2)(3)(4)(12) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 61,982 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 61,982 | $0 | 0 | I | Footnotes(2)(3)(4)(13) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 61,982 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 61,982 | $0 | 0 | I | Footnotes(2)(3)(4)(13) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 49,931 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 49,931 | $0 | 0 | I | Footnotes(2)(3)(4)(14) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 49,931 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 49,931 | $0 | 0 | I | Footnotes(2)(3)(4)(14) | |||
| Call option (obligation to sell) | $160 | 03/20/2026 | E/K(1) | 10,461 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 10,461 | $0 | 0 | I | Footnotes(2)(3)(4)(15) | |||
| Put option (right to sell) | $70 | 03/20/2026 | E/K(1)(16) | 10,461 | 03/20/2026 | 03/20/2026 | Class A Common Stock | 10,461 | $0 | 0 | I | Footnotes(2)(3)(4)(15) | |||
1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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| Explanation of Responses: |
| 1. In connection with the expiration of a call option and a put option entered into on August 27, 2025, as part of a collar arrangement, both options expired unexercised and for no value on March 20, 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 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. |
| 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 LLC | 03/20/2026 | |
| /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 LP | 03/20/2026 | |
| /s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman, as Administrative Manager of Supernova Management LLC | 03/20/2026 | |
| /s/ Hayley A. Stein, Attorney-in-Fact for David J. Snyderman | 03/20/2026 | |
| ** 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. | ||
| * Form 4: SEC 1474 (03-26) | ||