Form 4: Magnetar Funds Divest Over 1 Million CoreWeave Shares

Magnetar Financial LLC and its associated funds reported significant sales of CoreWeave Class A Common Stock on October 16, 2025, reducing their indirect beneficial ownership.

Summary

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, identified as a 10% owner and director of CoreWeave, Inc., reported sales of Class A Common Stock.
• The transactions occurred on October 16, 2025, and were made pursuant to a Rule 10b5-1 plan.
• A total of 1,004,013 shares of Class A Common Stock were sold across three Magnetar Funds: CW Opportunity LLC, CW Opportunity 2 LP, and Longhorn Special Opportunities Fund LP.
• CW Opportunity 2 LP sold 128,633 shares at weighted average prices ranging from $140.00 to $149.99 per share.
• CW Opportunity LLC sold 582,445 shares at weighted average prices ranging from $140.00 to $150.00 per share.
• Longhorn Special Opportunities Fund LP sold 292,935 shares at weighted average prices ranging from $140.00 to $150.00 per share.
• Following these sales, CW Opportunity 2 LP indirectly beneficially owns 5,789,361 shares of Class A Common Stock.
• Following these sales, CW Opportunity LLC indirectly beneficially owns 23,281,436 shares of Class A Common Stock.
• Following these sales, Longhorn Special Opportunities Fund LP indirectly beneficially owns 2,246,787 shares of Class A Common Stock.
• The reporting persons disclaim beneficial ownership of these shares except to the extent of their pecuniary interest therein.

Sentiment

Score: 3

Explanation: The sentiment is negative due to the substantial divestment of over 1 million shares by a significant institutional investor and director group, which could signal a lack of confidence or a strategic portfolio rebalancing away from CoreWeave.

Negatives

• A significant institutional shareholder and director group, Magnetar Financial LLC and its related entities, divested over 1 million shares of CoreWeave Class A Common Stock.
• Large-scale selling by a major investor could be interpreted negatively by the market, potentially signaling a lack of confidence or a strategic shift away from the company.

Risks

• The substantial sale of shares by a 10% owner and director group could lead to negative market sentiment and downward pressure on CoreWeave's stock price.
• Investor perception of insider selling may raise concerns about the company's future prospects or valuation.

Future Outlook

The filing does not contain any forward-looking statements or guidance regarding CoreWeave, Inc.'s future performance or outlook.

Management Comments

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman disclaim beneficial ownership of these shares of Common Stock of the Issuer, except to the extent of its or his pecuniary interest therein.

Industry Context

CoreWeave operates in the high-growth cloud computing and AI infrastructure sector. While the filing itself does not provide industry context, significant divestment by a major investor in this space could be viewed in the context of broader market trends, sector-specific valuations, or individual company performance within the competitive landscape.

Related Party Transactions

• The reporting persons, Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, are identified as a 10% owner and director of CoreWeave, Inc. The reported sales of Class A Common Stock are transactions by these related parties.

Stakeholder Impact

• Shareholders may experience negative sentiment and potential downward pressure on the stock price due to the significant selling activity by a major institutional investor and director group.

Key Dates

Recommendation

The substantial sale of over 1 million shares by Magnetar Financial LLC and its associated funds, a significant institutional investor and 10% owner, indicates a potential loss of confidence or a strategic portfolio shift away from CoreWeave, which could exert downward pressure on the stock price. This large-scale insider selling suggests a 'sell' recommendation for investors considering the immediate implications.

Keywords

CoreWeave, CRWV, Magnetar Financial, Magnetar Capital, Supernova Management, David J. Snyderman, SEC Form 4, Insider Transaction, Stock Sale, Beneficial Ownership, Class A Common Stock, Institutional Investor