Sibold William John Insider Trading Activity
Sibold William John has been net-selling over the last 12 months with 0 purchases and 6 sales across 1 company.
MDGL is the most-traded position with 6 trades. The largest single transaction was a sale of MDGL for $3.2M on Sep 9, 2025.
Performance Scorecard
Forward stock performance after each transaction by Sibold William John. Buy returns measure price movement after open-market purchases; sell-avoided measures the loss avoided after open-market sales. Success rate counts trades where the insider's direction was right.
| PERIOD | AVG BUY RETURN | AVG SELL AVOIDED | SUCCESS RATE | TRADES |
|---|---|---|---|---|
| 30 days | — | -5.0% | 33% | 6 |
| 90 days | — | -16.7% | 17% | 6 |
| 120 days | — | -23.8% | 17% | 6 |
Performance based on stock price movement after each transaction date. Past results do not predict future returns. Not financial advice.
Price & Trades
Pro: Trade MarkersMDGL · MADRIGAL PHARMACEUTICALS, INC.
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| DATE | TICKER | TYPE | SHARES | PRICE | VALUE | Δ OWNED | ROLE | FILING |
|---|---|---|---|---|---|---|---|---|
Mar 6, 2026 | MDGL | Sell | 1,663 | $431.94 | $718K | −1.0% | CEO | |
Jan 26, 2026 | MDGL | Sell | 1,577 | $492.42 | $777K | −1.1% | CEO | |
Dec 4, 2025 | MDGL | Sell | 2,400 | $575.34 | $1.4M | −1.6% | CEO | |
Sep 9, 2025 | MDGL | Sell | 7,279 | $445.63 | $3.2M | −6.6% | CEO | |
Aug 21, 2025 | MDGL | Sell | 6,485 | $400.03 | $2.6M | −5.5% | CEO | |
Aug 21, 2025 | MDGL | Sell | 1,131 | $401.00 | $454K | −1.0% | CEO |
Top Companies Traded
| TICKER | COMPANY | TRADES | TOTAL VOLUME |
|---|---|---|---|
| MDGL | MADRIGAL PHARMACEUTICALS, INC. | 6 | $9.2M |
Other insiders at MADRIGAL PHARMACEUTICALS, INC.
8 other tracked filers at MDGL.