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CoreWeave, Inc.·4

Mar 20, 8:20 PM ET

Magnetar Financial LLC 4

4 · CoreWeave, Inc. · Filed Mar 20, 2026

Research Summary

AI-generated summary of this filing

Updated

CoreWeave (CRWV) 10% Owner Magnetar Financial: Derivative Positions Expire

What Happened

  • Magnetar Financial LLC (reported as a 10% owner via affiliated funds) reported that multiple short derivative positions tied to CoreWeave, Inc. (CRWV) expired unexercised on March 20, 2026. The filing shows a total of 1,200,000 underlying shares associated with those expired positions, all reported as disposed for $0 (no cash changed hands).
  • These expirations reflect options that were part of a collar entered into on August 28, 2025; both the call and put expired worthless because CoreWeave’s closing price on March 20, 2026 was between the call and put strike prices. This is an expiration of derivative contracts, not an open-market sale of underlying stock.

Key Details

  • Transaction date: March 20, 2026. Transaction code: E (expiration of short derivative position). Report filed March 20, 2026 (same day).
  • Aggregate underlying shares affected: 1,200,000 shares. Reported value: $0 (options expired unexercised/no value).
  • Holdings: The Form 4 lists the expired derivative positions held directly by multiple Magnetar funds (see footnotes: CW Opportunity LLC; Magnetar Alpha Star Fund 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; Magnetar Lake Credit Fund LLC; Purpose Alternative Credit Fund – F LLC; Purpose Alternative Credit Fund – T LLC). Magnetar Financial is adviser to these funds; parent/related entities disclaim beneficial ownership except for pecuniary interest (per footnotes).
  • Filing timeliness: Reported and filed on the same date (not marked late).

Context

  • For retail investors: expirations for no value mean the derivative contracts simply lapsed — there was no purchase or sale of the underlying shares through this action and no cash proceeds. This was an institutional derivative result (collar expiration), not an executive insider buying or selling stock. Purchases are generally more indicative of bullish sentiment; expirations like this are largely administrative/contractual.

Insider Transaction Report

Form 4
Period: 2026-03-20
CoreWeave, Inc.CRWV
Magnetar Financial LLC
10% Owner
Transactions
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F5]
    2026-03-20−176,310→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (176,310 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F5]
    2026-03-20−176,310→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (176,310 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F6]
    2026-03-20−23,115→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (23,115 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F6]
    2026-03-20−23,115→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (23,115 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F7]
    2026-03-20−2,390→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (2,390 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F7]
    2026-03-20−2,390→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (2,390 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F8]
    2026-03-20−51,527→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (51,527 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F8]
    2026-03-20−51,527→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (51,527 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F9]
    2026-03-20−70,741→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (70,741 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F9]
    2026-03-20−70,741→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (70,741 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F10]
    2026-03-20−88,673→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (88,673 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F10]
    2026-03-20−88,673→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (88,673 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F11]
    2026-03-20−20,035→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (20,035 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F11]
    2026-03-20−20,035→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (20,035 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F12]
    2026-03-20−75,428→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (75,428 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F12]
    2026-03-20−75,428→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (75,428 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F13]
    2026-03-20−46,487→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (46,487 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F13]
    2026-03-20−46,487→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (46,487 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F14]
    2026-03-20−37,448→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (37,448 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F14]
    2026-03-20−37,448→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (37,448 underlying)
  • ExpirationSwap

    Call option (obligation to sell)

    [F1][F2][F3][F4][F15]
    2026-03-20−7,846→ 0 total(indirect: Footnotes)
    Exercise: $175.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (7,846 underlying)
  • ExpirationSwap

    Put option (right to sell)

    [F1][F16][F2][F3][F4][F15]
    2026-03-20−7,846→ 0 total(indirect: Footnotes)
    Exercise: $70.00From: 2026-03-20Exp: 2026-03-20→ Class A Common Stock (7,846 underlying)
Footnotes (16)
  • [F1]In connection with the expiration of a call option and a put option entered into on August 28, 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.
  • [F10]These securities are held directly by Magnetar Longhorn Fund LP.
  • [F11]These securities are held directly by Magnetar SC Fund Ltd.
  • [F12]These securities are held directly by Magnetar Structured Credit Fund, LP.
  • [F13]These securities are held directly by Magnetar Xing He Master Fund Ltd.
  • [F14]These securities are held directly by Purpose Alternative Credit Fund - F LLC.
  • [F15]These securities are held directly by Purpose Alternative Credit Fund - T LLC.
  • [F16]Expiration of a long derivative security for no value, transaction code "K" only.
  • [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 and the manager of Magnetar Alpha Star Fund LLC and 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 CW Opportunity LLC.
  • [F6]These securities are held directly by Magnetar Alpha Star Fund LLC.
  • [F7]These securities are held directly by Magnetar Capital Master Fund, Ltd.
  • [F8]These securities are held directly by Magnetar Constellation Master Fund, Ltd.
  • [F9]These securities are held directly by Magnetar Lake Credit Fund LLC.

Documents

1 file
  • 4
    tm269479-6_4seq1.xmlPrimary

    OWNERSHIP DOCUMENT