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Insider Trading & Ownership of William John Sibold

Location
West Conshohocken, PA
Summary
The estimated net worth of William John Sibold is at least $69,900,418 dollars as of 06 Mar 2026. William John Sibold is the President and CEO, Director of MADRIGAL PHARMACEUTICALS, INC. and owns shares of MADRIGAL PHARMACEUTICALS, INC. (MDGL) stock worth about $69.9M.
Signature
/s/ Mardi Dier, as Attorney-in-Fact
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Quick Takeaways

  • William John Sibold has 1 issuer position tracked on this page.
  • Estimated disclosed ownership value: $69,900,418.
  • Recent insider filing activity is available below.

What Changed

  • Largest disclosed position: MADRIGAL PHARMACEUTICALS, INC. ($69,900,418).
  • Past-year value change for that position: -$9,167,176.

Why This Matters

  • This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
  • You can cross-check role, issuer, and filing chronology directly against the SEC source.

Source Evidence

Filed on Form 4

Insider ownership context is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Ownership of William John Sibold

Symbol Company Relationship Holdings Value Past Year Net Change Change % Report Period
MDGL MADRIGAL PHARMACEUTICALS, INC. President and CEO, Director $69,900,418 -$9,167,176 -12% 04 Mar 2026

Insider Transactions Reported by William John Sibold:

Sym Company Class Transaction % Value $ * Price $ Shares Shares After Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

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