Form 4: Magnetar Funds Divest CoreWeave Stock

Magnetar Financial LLC and affiliated funds reported the sale of over 1.1 million shares of CoreWeave, Inc. Class A Common Stock on September 19, 2025, under a Rule 10b5-1 plan.

Summary

• Magnetar Financial LLC, along with Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, reported sales of CoreWeave, Inc. Class A Common Stock.
• The transactions involved the disposition of 1,151,054 shares across five affiliated Magnetar Funds.
• Sales occurred on September 19, 2025, at weighted average prices ranging from $121.78 to $128.66 per share.
• The sales were executed pursuant to a Rule 10b5-1(c) plan, indicating pre-scheduled transactions.
• Following these transactions, the Magnetar Funds collectively beneficially own 31,160,574 shares of CoreWeave Class A Common Stock.

Sentiment

Score: 5

Explanation: The filing is a routine disclosure of insider stock sales by a 10% owner, executed under a pre-arranged 10b5-1 plan. This type of transaction is generally considered neutral as it does not necessarily reflect a change in the reporting person's view of the company's prospects, but rather a planned portfolio adjustment.

Future Outlook

N/A. This filing reports past insider transactions and does not provide forward-looking statements or guidance from the issuer.

Industry Context

N/A. This Form 4 filing details specific insider transactions and does not provide broader industry context or analysis.

Stakeholder Impact

• Shareholders may note the significant sale of shares by a major institutional investor, though the 10b5-1 plan mitigates concerns about immediate negative sentiment.

Key Dates

Keywords

CoreWeave, CRWV, Magnetar Financial, Insider Sale, Form 4, SEC Filing, Equity Transaction, 10b5-1 Plan, Institutional Investor