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Magnetar Financial LLC 4 SEC Filings

Filed On Filing
18 Sep 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 3,000,000 Call option (obligation to sell) (Short Position Expiration) · Disposed of 3,000,000 Put option (right to sell) (Short Position Expiration)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 200,000 Warrant (right to buy) (Open Market Sale) ($21.4M)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Sold 307,131 shares ($33.4M)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 1,000,000 Call option (obligation to sell) (Open Market Sale) ($1.56T)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 100,000 Warrant (right to buy) (Open Market Sale) ($10.5M)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Holds 1,891,986 shares of Class A Common Stock

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Sold 1,921,259 shares ($214M)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 2,000,000 Call option (obligation to sell) (Open Market Sale) ($14.2T)

14 Aug 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Sold 2,147,871 shares ($232M)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 127,500 shares (Other Transaction) · Disposed of 127,500 Forward sale contract (obligation to sell) (Other Transaction)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 200,000 shares (Other Transaction) · Disposed of 200,000 Forward sale contract (obligation to sell) (Other Transaction)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 400,000 shares (Other Transaction) · Disposed of 400,000 Forward sale contract (obligation to sell) (Other Transaction)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 68,600 shares (Other Transaction) · Disposed of 68,600 Forward sale contract (obligation to sell) (Other Transaction)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 200,000 shares (Other Transaction) · Disposed of 200,000 Forward sale contract (obligation to sell) (Other Transaction)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 500,000 Call option (obligation to sell) (Short Position Expiration) · Disposed of 500,000 Put option (right to sell) (Short Position Expiration)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 1,500,000 Call option (obligation to sell) (Short Position Expiration) · Disposed of 1,500,000 Put option (right to sell) (Short Position Expiration)

23 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 2,000,000 Call option (obligation to sell) (Short Position Expiration) · Disposed of 2,000,000 Put option (right to sell) (Short Position Expiration)

03 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Sold 112,111 shares ($14.6M)

03 Jun 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 2,000,000 Call option (obligation to sell) (Open Market Sale) ($13.5T)

08 May 2026 Form 4: Magnetar Financial Llc, 10% owner and 3 others · CoreWeave, Inc.

Disposed of 90,000 Warrant (right to buy) (Open Market Sale) ($11.4M)

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