William John Sibold, President and CEO at MADRIGAL PHARMACEUTICALS, INC. (MDGL), sold 1,663 shares at $431.94 ($718K) on 2026-03-06, disclosed to the SEC on 2026-03-06.
Open-market sale of $718k MDGL by President and CEO. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| MDGL | SELL | 2026-01-26 | $777K | — | Filing → |
| MDGL | SELL | 2025-12-04 | $1.4M | — | Filing → |
| MDGL | SELL | 2025-09-09 | $6.5M | — | Filing → |