Magnetar CoreWeave options collar expires unexercised
CoreWeave, Inc. large shareholders reported the expiration of an options collar on the company’s Class A Common Stock.
Accepted by SEC EDGAR
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Form Type
4
Rhea-AI Filing Summary
CoreWeave, Inc. large shareholders reported the expiration of an options collar on the company’s Class A Common Stock. Magnetar-affiliated funds had entered into paired call and put option positions on August 15, 2025 as part of a collar arrangement. According to the filing, on March 20, 2026 both the call options (obligations to sell) and the put options (rights to sell) expired unexercised and for no value because the stock’s closing price fell between the call and put strike prices. The options were held by various Magnetar funds, and Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC and David J. Snyderman each disclaim beneficial ownership of the underlying shares except to the extent of any pecuniary interest.
Insider Trade Summary
Derivative Expiration: 4,837,526 shares
Derivative Expiration
30 txns
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) | 171,757 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 171,757 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 171,756 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 171,756 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 251,428 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 251,428 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 251,429 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 251,429 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 154,956 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 154,956 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 154,956 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 154,956 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 66,783 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 66,783 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 66,784 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 66,784 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 295,575 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 295,575 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 295,575 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 295,575 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 124,828 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 124,828 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 124,827 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 124,827 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 26,153 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 26,153 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 26,154 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 26,154 | $0.00 | $0.00 |
| Derivative Expiration | Call option (obligation to sell) | 235,802 | $0.00 | $0.00 |
| Derivative Expiration | Put option (right to sell) | 235,802 | $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 (13)
- F1. In connection with the expiration of a call option and a put option entered into on August 15, 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.
- F2. Magnetar Financial LLC ("Magnetar Financial") serves as the investment adviser to each of 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 Lake Credit Fund LLC (collectively, the "Magnetar Funds").
- 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.
- 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.
- F5. These securities are held directly by Magnetar Constellation Master Fund, Ltd.
- F6. These securities are held directly by Magnetar Structured Credit Fund, LP.
- F7. These securities are held directly by Magnetar Xing He Master Fund Ltd.
- F8. These securities are held directly by Magnetar SC Fund Ltd.
- F9. These securities are held directly by Magnetar Longhorn Fund LP.
- F10. These securities are held directly by Purpose Alternative Credit Fund - F LLC.
- F11. These securities are held directly by Purpose Alternative Credit Fund - T LLC.
- F12. These securities are held directly by Magnetar Lake Credit Fund LLC.
- F13. Expiration of a long derivative security for no value, transaction code "K" only.
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did the CoreWeave (CRWV) Form 4 filed by Magnetar entities report?
The Form 4 reports the expiration of an options collar on CoreWeave Class A shares. Magnetar-affiliated funds had paired call and put options that expired unexercised and for no value on March 20, 2026, with no reported open-market stock purchases or sales.
What type of derivatives on CoreWeave (CRWV) did Magnetar funds hold?
The Magnetar funds held call and put options on CoreWeave Class A Common Stock. These options formed a collar, combining obligations to sell via calls and rights to sell via puts, with strike prices referenced at $80, $135 and $140 in the filing.
When did the CoreWeave (CRWV) collar entered by Magnetar begin and end?
The collar was entered on August 15, 2025, and expired on March 20, 2026. On the expiration date, CoreWeave’s Class A Common Stock closed between the call and put strike prices, causing both option legs to lapse unexercised for no value.
Did Magnetar’s CoreWeave (CRWV) options expiration involve exercising the derivatives?
No, the filing states the options expired unexercised and for no value. Because the CoreWeave Class A share price at expiration was between the call and put strike prices, neither side of the collar was exercised by the Magnetar-affiliated funds.
Who actually held the CoreWeave (CRWV) derivatives reported in this Form 4?
The derivatives were held directly by various Magnetar funds, not the individuals. Footnotes specify holdings by Magnetar Constellation Master Fund and other Magnetar funds, while Magnetar Financial, Magnetar Capital Partners, Supernova Management and David J. Snyderman disclaim beneficial ownership except for pecuniary interest.
Does the CoreWeave (CRWV) Form 4 show remaining Magnetar derivative positions?
The filing’s derivative summary shows no remaining derivative positions from this collar. Each listed call and put option on CoreWeave Class A Common Stock has a total shares following transaction figure of zero, indicating these specific contracts fully expired on March 20, 2026.
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