SEC Form 4 · accession 0001104659-26-109005

CoreWeave, Inc. · CRWV

Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗

Reporting owners

Magnetar Financial LLC

10% Owner

Magnetar Capital Partners LP

10% Owner

Supernova Management LLC

10% Owner

David J. Snyderman

10% Owner

Period of report

Sep 18, 2026

Accepted (ET)

Sep 18, 2026 · 6:56 pm EDT

Rule 10b5-1 plan

box not checked

Issuer CIK

0001769628

Table I — non-derivative securities

No Table I lines on this filing.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Call option (obligation to sell)^F2,F3,F4,F5	$180.00	Sep 18, 2026	E	881,551	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	881,551	I
Put option (right to sell)^F2,F3,F4,F5	$75.00	Sep 18, 2026	E	881,551	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	881,551	I
Call option (obligation to sell)^F2,F3,F4,F6	$180.00	Sep 18, 2026	E	115,575	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	115,575	I
Put option (right to sell)^F2,F3,F4,F6	$75.00	Sep 18, 2026	E	115,575	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	115,575	I
Call option (obligation to sell)^F2,F3,F4,F7	$180.00	Sep 18, 2026	E	11,949	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	11,949	I
Put option (right to sell)^F2,F3,F4,F7	$75.00	Sep 18, 2026	E	11,949	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	11,949	I
Call option (obligation to sell)^F2,F3,F4,F8	$180.00	Sep 18, 2026	E	257,634	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	257,634	I
Put option (right to sell)^F2,F3,F4,F8	$75.00	Sep 18, 2026	E	257,634	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	257,634	I
Call option (obligation to sell)^F2,F3,F4,F9	$180.00	Sep 18, 2026	E	353,703	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	353,703	I
Put option (right to sell)^F2,F3,F4,F9	$75.00	Sep 18, 2026	E	353,703	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	353,703	I
Call option (obligation to sell)^F2,F3,F4,F10	$180.00	Sep 18, 2026	E	443,363	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	443,363	I
Put option (right to sell)^F2,F3,F4,F10	$75.00	Sep 18, 2026	E	443,363	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	443,363	I
Call option (obligation to sell)^F2,F3,F4,F11	$180.00	Sep 18, 2026	E	100,176	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	100,176	I
Put option (right to sell)^F2,F3,F4,F11	$75.00	Sep 18, 2026	E	100,176	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	100,176	I
Call option (obligation to sell)^F2,F3,F4,F12	$180.00	Sep 18, 2026	E	377,144	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	377,144	I
Put option (right to sell)^F2,F3,F4,F12	$75.00	Sep 18, 2026	E	377,144	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	377,144	I
Call option (obligation to sell)^F2,F3,F4,F13	$180.00	Sep 18, 2026	E	232,434	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	232,434	I
Put option (right to sell)^F2,F3,F4,F13	$75.00	Sep 18, 2026	E	232,434	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	232,434	I
Call option (obligation to sell)^F2,F3,F4,F14	$180.00	Sep 18, 2026	E	187,241	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	187,241	I
Put option (right to sell)^F2,F3,F4,F14	$75.00	Sep 18, 2026	E	187,241	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	187,241	I
Call option (obligation to sell)^F2,F3,F4,F15	$180.00	Sep 18, 2026	E	39,230	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	39,230	I
Put option (right to sell)^F2,F3,F4,F15	$75.00	Sep 18, 2026	E	39,230	D	Sep 18, 2026	Sep 18, 2026	Class A Common Stock	39,230	I

Explanation of responses

F1In 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.
F10These securities are held directly by Magnetar Longhorn Fund LP.
F11These securities are held directly by Magnetar SC Fund Ltd.
F12These securities are held directly by Magnetar Structured Credit Fund, LP DBA Magnetar Constellation Onshore Fund (They are not separate legal entities).
F13These securities are held directly by Magnetar Xing He Master Fund Ltd.
F14These securities are held directly by Purpose Alternative Credit Fund - F LLC.
F15These securities are held directly by Purpose Alternative Credit Fund - T LLC.
F16Expiration of a long derivative security for no value, transaction code "K" only.
F2Magnetar 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").
F3Magnetar 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.
F4Each 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.
F5These securities are held directly by CW Opportunity LLC.
F6These securities are held directly by Magnetar Alpha Star Fund LLC.
F7These securities are held directly by Magnetar Capital Master Fund, Ltd.
F8These securities are held directly by Magnetar Constellation Master Fund, Ltd.
F9These securities are held directly by Magnetar Lake Credit Fund LLC.