Form 4: Magnetar Entities Report Planned CoreWeave Stock Sales

Magnetar Financial LLC and related entities disclosed the planned sale of 18,371 shares of CoreWeave, Inc. Class A Common Stock on October 17, 2025, under a Rule 10b5-1 plan.

Summary

• Magnetar Financial LLC, Magnetar Capital Partners LP, Supernova Management LLC, and David J. Snyderman, identified as 10% owners of CoreWeave, Inc. (CRWV), reported transactions.
• A total of 18,371 shares of Class A Common Stock are planned to be sold on October 17, 2025.
• The sales are executed at weighted average prices ranging from $136.39 to $140.20 per share.
• These transactions are indicated to be made pursuant to a Rule 10b5-1(c) contract, instruction, or written plan.
• Following these planned transactions, the reporting persons will indirectly beneficially own a total of 13,284,164 shares of Class A Common Stock.
• Specifically, Purpose Alternative Credit Fund F LLC will hold 3,178,126 shares, Purpose Alternative Credit Fund T LLC will hold 903,175 shares, and Magnetar Longhorn Fund LP will hold 9,202,863 shares.

Sentiment

Score: 5

Explanation: This Form 4 reports a routine insider sale by a 10% owner, which is a factual disclosure of a transaction and does not inherently indicate positive or negative sentiment regarding the company's operational performance or future prospects. The transaction is noted as being under a 10b5-1 plan, suggesting a pre-scheduled disposition.

Future Outlook

The filing indicates planned sales of Class A Common Stock on October 17, 2025, pursuant to a Rule 10b5-1 plan, suggesting a pre-arranged disposition strategy by the reporting entities.

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 Form 4 filing reports an insider transaction by a significant institutional investor (10% owner) in CoreWeave, Inc. Such filings are routine disclosures of ownership changes and do not typically provide broader industry context or competitive analysis.

Related Party Transactions

• The reported sales are by Magnetar Financial LLC and related entities, which are identified as 10% owners of CoreWeave, Inc. and are therefore considered related parties.

Stakeholder Impact

• Shareholders: The sale of 18,371 shares by a 10% owner represents a minor reduction in their overall beneficial ownership (from over 13 million shares), which is unlikely to have a significant direct impact on the broader shareholder base or market liquidity.

Key Dates

Keywords

CoreWeave, CRWV, Magnetar Financial, Insider Trading, Form 4, Stock Sale, 10% Owner, Institutional Investor, Rule 10b5-1