CoreWeave (CRWV) 10% Owner Magnetar Financial Sells Shares

What Happened
Magnetar Financial LLC, acting as investment adviser to a group of Magnetar funds (a disclosed 10% owner), sold a total of 307,131 shares of CoreWeave, Inc. (CRWV) in multiple open‑market transactions on August 14, 2026. The sales were executed at prices ranging roughly from $108.00 to $110.00 (weighted average prices reported), generating aggregate proceeds of about $33.4 million. This filing is an amendment that corrects which specific Magnetar funds reported each block of shares; the total shares sold and aggregate proceeds are unchanged.

Key Details

• Transaction date: August 14, 2026; Transaction type/code: Sale (S).
• Prices: reported as blocks at $108.48, $109.99 and $110.00 with a weighted average and individual trades in the $108.00–$110.00 range (see footnote F1 for exact range $108.00–$108.72 for some blocks).
• Shares sold: 307,131; Estimated proceeds: $33,401,612.
• Shares owned after transaction: Not stated in the supplied filing information.
• Notable footnotes: multiple Magnetar funds directly hold the securities (F5–F17); Magnetar Financial is the adviser to those funds (F2); holdings disclaimers apply (F3–F4). F1 notes the reported price is a weighted average across multiple trades and the reporting person will provide details on request.
• Filing status: This is an amended Form 4 (filed 2026-08-18) correcting which Magnetar fund(s) were listed for each sale on the original filing dated August 14; the amendment does not change the aggregate amounts sold.

Context
These sales come from institutional Magnetar-managed funds (a 10% owner), not an individual company executive. Institutional fund sales can reflect portfolio/liquidity decisions rather than a company-specific signal; retail investors should treat such disposals as routine unless accompanied by other material news. No option exercises, grants, or purchases are reported in this filing.