Form 4: Magnetar Funds Divest $36M CoreWeave Class A Stock

Magnetar Financial LLC and affiliated entities reported the sale of 254,525 shares of CoreWeave Class A Common Stock for approximately $36.14 million.

Summary

• Magnetar Financial LLC, along with Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, reported the sale of CoreWeave, Inc. Class A Common Stock.
• A total of 254,525 shares were disposed of across multiple transactions on October 16, 2025.
• The sales were executed at weighted average prices ranging from $140.00 to $150.00 per share.
• The aggregate value of the shares sold is approximately $36,136,439.05.
• Following these transactions, the Magnetar Funds (Magnetar Alpha Star Fund LLC, Magnetar Capital Master Fund, Ltd, and Magnetar Constellation Master Fund, Ltd) collectively beneficially own 7,378,547 shares of CoreWeave Class A Common Stock indirectly.
• The transactions were made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan for the purchase or sale of equity securities.

Sentiment

Score: 4

Explanation: While the sale was conducted under a 10b5-1 plan, indicating a pre-planned divestment rather than an immediate reaction to new information, a significant sale by a 10% owner and director-affiliated entity can still be perceived as a slight negative signal regarding future prospects or a strategic portfolio adjustment.

Negatives

• Significant divestment by a 10% owner and director-affiliated entity, which could be interpreted as a reduction in conviction or a strategic portfolio rebalancing.
• The sale of 254,525 shares represents a notable reduction in their indirect holdings.

Future Outlook

The filing does not contain any forward-looking statements or guidance from CoreWeave, Inc. or the reporting persons regarding the company's future performance.

Management Comments

• 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.

Industry Context

This filing reports an insider transaction and does not provide broader industry context or analysis.

Stakeholder Impact

• Shareholders: May interpret the sale by a significant investor and director-affiliated entity as a signal, potentially influencing market sentiment or prompting further analysis of the company's prospects.
• Management: The sale by a 10% owner and director-affiliated entity could prompt internal discussions or external inquiries regarding the company's short-to-medium term outlook or investor relations strategy.

Key Dates

Recommendation

The filing reports a significant sale of CoreWeave Class A Common Stock by Magnetar Financial LLC and its affiliated entities, which are 10% owners and have director representation. While the transactions were executed under a Rule 10b5-1 plan, suggesting a pre-determined divestment strategy rather than an immediate reaction to new company developments, such a large insider sale can introduce uncertainty. However, the Magnetar Funds still retain a substantial indirect beneficial ownership of over 7.3 million shares. Without additional context on CoreWeave's performance, market conditions, or Magnetar's broader investment strategy, this Form 4 alone does not provide sufficient grounds for a strong buy or sell recommendation. Investors should hold their positions and monitor further developments, considering this sale as a data point in a broader analysis.

Keywords

CoreWeave, CRWV, Magnetar Financial, insider trading, stock sale, Form 4, SEC filing, institutional investor, 10b5-1 plan