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START FREE TRIAL →William John Sibold, President and CEO, is a corporate insider tracked by InsiderTape across 1 company. The public record shows 7 open-market SEC Form 4 transactions: 0 purchases worth $0 and 7 sales worth $10.8M, reported from Sep 9, 24 to Mar 6, 26. Over this period they have been a net seller.
| Date | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 6, 26 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 1.7K | $431.94 | $718K |
| Jan 26, 26 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 1.6K | $492.42 | $777K |
| Dec 4, 25 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 2.4K | $575.34 | $1.4M |
| Sep 9, 25 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 7.3K | $445.63 | $3.2M |
| Aug 21, 25 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 6.5K | $401.00 | $2.6M |
| Jan 24, 25 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 1.6K | $335.24 | $531K |
| Sep 9, 24 | MDGLMADRIGAL PHARMACEUTICALS, INC. | SELL | 6.4K | $243.83 | $1.6M |