Form 4: Magnetar Funds Divest CoreWeave Class A Stock

Magnetar Financial LLC and affiliated entities reported the sale of over 600,000 shares of CoreWeave Class A Common Stock on October 6, 2025.

Summary

• Magnetar Financial LLC, a 10% owner and director of CoreWeave, Inc., along with affiliated entities, reported significant sales of Class A Common Stock.
• A total of 609,515 shares of Class A Common Stock were disposed of on October 6, 2025.
• The sales occurred at weighted average prices ranging from $137.00 to $139.96 per share.
• Following these transactions, Magnetar-affiliated funds collectively beneficially own 79,922,085 shares of CoreWeave Class A Common Stock.
• The transactions were made pursuant to a Rule 10b5-1(c) plan.

Sentiment

Score: 4

Explanation: The sale of a significant number of shares by a 10% owner and director, Magnetar Financial LLC, is generally viewed as a slightly negative signal, indicating a reduction in insider exposure. However, the transaction was made pursuant to a 10b5-1 plan, which suggests a pre-scheduled sale rather than a reaction to immediate news.

Negatives

• Significant insider selling by a 10% owner and director, Magnetar Financial LLC and its affiliates, totaling 609,515 shares.
• The sales occurred at various prices between $137.00 and $139.96, indicating a divestment at current market levels.

Future Outlook

No forward-looking statements or guidance are provided in this Form 4 filing, which is a report of past transactions.

Management Comments

• The price reported in Column 4 is a weighted average price. These securities were sold in multiple transactions at prices ranging from $137.00 to $137.74, inclusive.
• The reporting person undertakes to provide to CoreWeave, Inc. (the 'Issuer'), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote and in footnotes 2, 3 and 4.
• 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. CoreWeave operates in the cloud computing and AI infrastructure sector, where demand for specialized computing resources is high. Insider selling could be a routine portfolio adjustment or a signal of perceived valuation, but without further context, its industry implications are limited.

Comparison to Industry Standards

• This Form 4 filing reports specific insider transactions and does not contain information suitable for comparison to global benchmarks or specific comparable companies/projects. It is a disclosure of beneficial ownership changes.

Related Party Transactions

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, all reporting persons, are affiliated entities and individuals involved in the sale of CoreWeave shares. The sales were conducted by various Magnetar Funds advised or managed by these entities.

Stakeholder Impact

• Shareholders: The sale by a significant institutional investor and director could be interpreted as a signal regarding the company's valuation or future prospects, potentially influencing investor sentiment.
• Employees, Customers, Suppliers, Creditors: No direct impact is indicated by this transaction report.

Next Steps

• The filing does not mention any specific future actions, events, or milestones for CoreWeave, Inc. It is a report of a completed transaction.

Key Dates

Recommendation

The filing reports significant insider selling by a 10% owner and director, Magnetar Financial LLC, and its affiliates. While insider selling can be a negative signal, the transaction was executed under a Rule 10b5-1 plan, suggesting a pre-arranged sale rather than a reaction to new information. Without additional context on the company's fundamentals or the specific reasons for the divestment beyond the 10b5-1 plan, a 'hold' recommendation is appropriate, advising investors to monitor future developments and company performance.

Keywords

CoreWeave, CRWV, Magnetar Financial, Insider Selling, Form 4, Beneficial Ownership, Equity Sales, Class A Common Stock, 10b5-1 Plan