Form 4: Magnetar Entities Divest CoreWeave Class A Stock

Magnetar entities sold 17,769 CoreWeave Class A shares for $2.44M.

Summary

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman reported sales of CoreWeave, Inc. Class A Common Stock.
• A total of 17,769 shares were sold on October 14, 2025.
• The sales occurred at weighted average prices of $137.17 and $137.19 per share.
• The total value of the shares sold is approximately $2,440,862.67.
• These transactions were executed pursuant to a Rule 10b5-1(c) pre-planned trading arrangement.
• Following these transactions, the Magnetar Funds collectively beneficially own 75,673,508 shares of CoreWeave Class A Common Stock.
• The reporting persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interest.

Sentiment

Score: 4

Explanation: The filing reports significant insider selling by a 10% owner and related entities. While the sales were conducted under a pre-planned 10b5-1 arrangement, which suggests a non-discretionary event, the divestment of a substantial number of shares by a major holder can still be perceived as a neutral to slightly negative signal by the market.

Positives

• The transactions were made pursuant to a Rule 10b5-1(c) pre-planned trading arrangement, indicating a scheduled, non-discretionary sale.

Negatives

• Significant insider selling by a 10% owner and related entities, totaling 17,769 shares for approximately $2.44 million.

Future Outlook

NA

Industry Context

NA

Related Party Transactions

• Sales of Class A Common Stock by Magnetar Financial LLC and its related entities (Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman) who are identified as 10% owners and directors of CoreWeave, Inc.

Stakeholder Impact

• Shareholders may view the insider selling as a neutral to slightly negative signal, despite the 10b5-1 plan.
• The transaction provides transparency regarding the holdings and trading activities of a significant institutional investor.

Key Dates

Keywords

CoreWeave, CRWV, Magnetar Financial, Magnetar Capital Partners, Supernova Management, David J. Snyderman, Form 4, Insider Sale, Stock Transaction, 10b5-1 Plan, Class A Common Stock, Beneficial Ownership