CoreWeave (CRWV) 10% Owner Magnetar Financial Sells Shares

What Happened
Magnetar Financial LLC, identified in the filing as a 10% owner or adviser to several Magnetar funds, reported multiple disposals of derivative securities in CoreWeave, Inc. (CRWV) on August 12, 2026. The Form 4 lists nine separate sales (transaction code S) of derivative positions with reported proceeds totaling $14,241,302,048,263. Individual reported transactions include (shares @ price = proceeds): 183,640 @ $3,659,027 = $671,943,718,280; 627,486 @ $12,502,658.55 = $7,845,243,202,905; 8,503 @ $169,422.28 = $1,440,597,647; 183,381 @ $3,653,866.43 = $670,049,679,800; 251,762 @ $5,016,357.85 = $1,262,928,285,032; 315,583 @ $6,287,991.28 = $1,984,383,152,116; 268,446 @ $5,348,786.55 = $1,435,860,354,201; 133,276 @ $2,655,524.30 = $353,917,656,607; and 27,923 @ $556,365.78 = $15,535,401,675. These are sales (not purchases), so the filing documents liquidation of derivative positions rather than new buys.

Key Details

• Transaction date(s): August 12, 2026 (reported on Form 4 filed August 14, 2026) — filing appears timely.
• Transaction type: Sales of derivative securities (reported as "Derivative" on the Form 4; transaction code S).
• Reported total proceeds: $14,241,302,048,263 (sum of the nine disposals as reported).
• Individual transactions (shares @ price = proceeds) listed above in What Happened.
• Shares owned after transaction: not disclosed in the provided filing summary.
• Notable footnotes: Magnetar Financial is the investment adviser to a group of Magnetar Funds that directly hold the securities (see footnotes F1–F12). Magnetar entities and related parties disclaim beneficial ownership except to the extent of pecuniary interest.

Context

• These transactions were reported as derivative disposals — the filing indicates dealings in derivative instruments (e.g., options, swaps, or similar) rather than necessarily direct sales of registered common stock; the Form 4 labels them as "Derivative."
• Magnetar Financial here is an institutional 10% owner/adviser to multiple funds (not an individual officer/executive). Institutional disposals are different from insider (executive) signals; the filing includes disclaimers about beneficial ownership.
• The filing was submitted two days after the transaction date (period of report Aug 12, filed Aug 14), which is within common Form 4 timing and not flagged late in the provided data.

Note: This summary reflects the amounts and descriptions as reported on the Form 4; it does not infer motives or the underlying mechanics of the derivative contracts.