Insiders / Sibold William John
Sibold William John
CIK 1518611personinsider
Companies
1
First seen
Jan 26, 2026
Last activity
Mar 6, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Madrigal Pharmaceuticals, Inc. · MDGL | 161,829 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Madrigal Pharmaceuticals, Inc. | Common Stock | 161,829 |
| Madrigal Pharmaceuticals, Inc. | Stock Option (Right to Buy)Derivative | 18,743 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Jan 26, 2026 | Sell | MDGL Madrigal Pharmaceuticals, Inc. Common Stock | $776.5K | -2K -1.05% | 148,497 0.64% of shares | medium |
| Mar 6, 2026 | Sell | MDGL Madrigal Pharmaceuticals, Inc. Common Stock | $718.3K | -2K -1.02% | 161,829 0.70% of shares | medium |
| Mar 4, 2026 | Grant | MDGL Madrigal Pharmaceuticals, Inc. Common Stock | $0 | +15K +10.10% | 163,492 0.71% of shares | low |
| Mar 4, 2026 | Grant | MDGL Madrigal Pharmaceuticals, Inc. Stock Option (Right to Buy) | — | +19K | 18,743 0.08% of shares | low |