William John Sibold
President and CEO, Director · MADRIGAL PHARMACEUTICALS, INC.
- 2025
- Sep 11, 2026
- 7
Other insiders active in the same stocks
Insiders who reported open-market trades in the last 12 months at the companies William John Sibold files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Kenneth Bate - $8.03M in MDGL purchases and sales in the last 12 months
- Richard S. Levy - $7.36M in MDGL purchases and sales in the last 12 months
- Mardi Dier - $3.77M in MDGL purchases and sales in the last 12 months
- Carole Huntsman - $1.71M in MDGL purchases and sales in the last 12 months
- Rebecca Taub - $1.63M in MDGL purchases and sales in the last 12 months
- David Soergel - $952K in MDGL purchases and sales in the last 12 months
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Frequently asked questions
Who is William John Sibold?
William John Sibold is a corporate insider, tracked as President and CEO, Director of MADRIGAL PHARMACEUTICALS, INC. (MDGL). InsiderAlpha holds 7 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has William John Sibold submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has William John Sibold been buying or selling stock?
Recorded transactions: 0 open-market purchases and 40 open-market sales ($16.77M) across all tracked filings.
