Sibold William John
- SEC CIK
- 0001518611
In the past year, 5 open-market sale filings worth $10.5M and no purchases.
Current role at each company
- MDGL Madrigal Pharmaceuticals, Inc.President and CEOas of Sep 11, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $10.5M
- 5 filings
- Net
- −$10.5M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Sibold William John as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 11, 2026 (view filing)4:57 PM ET | Sep 9-11 | 2 days | Sibold William JohnPresident and CEO | SSale | −11.6K | $538.65 | −$6.24M | −5.5%197.7K after | 24 lots10b5-1 |
| Jul 20, 2026 (view filing)9:16 PM ET | Jul 20 | Same day | Sibold William JohnPresident and CEO | SSale | −2.50K | $547.30 | −$1.37M | −1.2%209.3K after | 10 lots |
| Mar 6, 2026 (view filing) | Mar 6 | Same day | Sibold William JohnPresident and CEO | SSale | −1.66K | $431.94 | −$718.3K | −1.0%161.8K after | |
| Jan 26, 2026 (view filing) | Jan 26 | Same day | Sibold William JohnPresident and CEO | SSale | −1.58K | $492.42 | −$776.5K | −1.1%148.5K after | |
| Dec 4, 2025 (view filing) | Dec 4 | Same day | Sibold William JohnPresident and CEO | SSale | −2.40K | $575.34 | −$1.38M | −1.6%150.1K after | |
| Sep 9, 2025 (view filing) | Sep 9 | Same day | Sibold William JohnPresident and CEO | SSale | −7.28K | $445.63 | −$3.24M | −6.6%102.5K after | |
| Aug 21, 2025 (view filing) | Aug 21 | Same day | Sibold William JohnPresident and CEO | SSale | −7.62K | $400.17 | −$3.05M | −6.5%109.8K after | 2 lots10b5-1 |
| Jan 27, 2025 (view filing) | Jan 24 | 3 days | Sibold William JohnPresident and CEO | SSale | −1.58K | $335.24 | −$531.0K | −2.8%54.3K after | |
| Sep 11, 2024 (view filing) | Sep 9 | 2 days | Sibold William JohnPresident and CEO | SSale | −6.36K | $243.83 | −$1.55M | −10.2%55.9K after |