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Magnetar Financial LLC

CIK 1352851 · last filed 2026-08-14

Magnetar Financial LLC is a corporate insider who has filed 42 SEC Form 4 insider transactions across 4 companies since 2021. The most recent filing, for CRWV, was dated Aug 14, 2026. Across all open-market trades the lifetime net is −$6.63B, making them a net seller over the disclosed history. Current disclosed insider exposure totals $161.2M across reported positions. The firm reports its address in Evanston, IL. 168 SEC filings were submitted jointly with Magnetar Capital Partners LP.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$161.22M

Companies

4

Total Filings

42

Lifetime Open-Market Net

-$6.63B

Filer Profile

Reported Address
1603 ORRINGTON AVE.
13TH FLOOR
EVANSTON, IL 60201
Phone
(847) 905-4400
State of Incorporation
DE
Related Filers
Magnetar Capital Partners LP — 168 joint filings, latest 2026-08-18
Supernova Management LLC — 167 joint filings, latest 2026-08-18
David J. Snyderman — 151 joint filings, latest 2026-08-18
CW Opportunity LLC — 1 joint filings, latest 2026-08-03
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
CRWV 10%+ Owner 1,891,986 $84.35 $159.59M -$6.63B 37 2026-08-14
WHLRP 10%+ Owner 172,075 $9.50 $1.63M -$38.8K 2 2026-03-26
Churchill Capital Corp VII (CVII.WS) Delisted 10%+ Owner 1,516,950 $0.30 $455.1K -$8.5K 1 2024-01-18
TriSalus Life Sciences, Inc. (MTACW) Delisted 10%+ Owner 0 $0.22 $0 $0 1 2023-06-14

Recent Filings

42 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-08-14 CRWV Sell (S) — $0 EDGAR
2026-08-14 CRWV — — $0 EDGAR
2026-06-23 CRWV Other (J) −800,000 $0 EDGAR
2026-06-23 CRWV Other (J) −510,000 $0 EDGAR
2026-06-23 CRWV Other (J) −274,400 $0 EDGAR
2026-05-08 CRWV Sell (S) −636,672 -$82.71M EDGAR
2026-05-06 CRWV Sell (S) −3,915,056 -$499.86M EDGAR
2026-05-06 CRWV Sell (S) −4,620,656 -$588.15M EDGAR
2026-05-06 CRWV Sell (S) — $0 EDGAR
2026-05-06 CRWV Sell (S) — $0 EDGAR
Showing 1–10 of 42
Page 1 of 5
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.