Open Insider Trading Activity for Madrigal Pharmaceuticals, Inc. President and CEO Sibold William John
31-day price and insider activity (up to 2 years)
Daily candles with triangles for the buy and sale transactions shown below. Scroll left or zoom out to load earlier candles (up to 2 years).
▲ Insider buy
▼ Insider sale
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| Ticker | Filing Date | Transaction Date | Company | Insider | Title | Transaction | Trade Count | Shares | Avg. Price | Total Value | Position Size Change | SEC Filing |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10b5-1: Scheduled Form 4 Transaction MDGL | 2026-09-11 | 2026-09-11 | Madrigal Pharmaceuticals, Inc. | Sibold William John | President and CEO | Sell | 10 | 5,221 | $542.39 | $2,831,800.73 | 0.26% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting MDGL | 2026-09-11 | 2026-09-09 | Madrigal Pharmaceuticals, Inc. | Sibold William John | President and CEO | Sell | 14 | 6,362 | $535.59 | $3,407,397.42 | 0.22% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting MDGL | 2026-01-26 | 2026-01-26 | Madrigal Pharmaceuticals, Inc. | Sibold William John | President and CEO | Sell | 1 | 1,577 | $492.42 | $776,546.34 | 1.05% | View Filing |
| Tax liability coverage transfers: shares are often sold to offset the tax liability from shares vesting MDGL | 2025-09-09 | 2025-09-09 | Madrigal Pharmaceuticals, Inc. | Sibold William John | President and CEO | Sell | 1 | 7,279 | $445.63 | $3,243,740.77 | 6.63% | View Filing |