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 | — | -24.1% | 20% | 5 |
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.
🔒 Subscribe to see trade entries
Pro members see exactly when Sibold William John bought and sold MDGL.
Upgrade to ProRecent Trades
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.