William John Sibold

President and CEO, Director, Madrigal Pharmaceuticals, Inc.

Bought, 12 months

$0.0M

Sold, 12 months

$10.5M

Companies

Latest trade

Sep 11, 2026

Companies

Madrigal Pharmaceuticals, Inc.President and CEO, Director −$10.5M

Trades

MDGL Sold 5,221 shares at $542.39 · planned $2.8M Sep 11

MDGL Sold 6,362 shares at $535.59 · planned $3.4M Sep 9

MDGL Sold 2,500 shares at $547.30 $1.4M Jul 20

MDGL Sold 1,663 shares at $431.94 $0.7M Mar 6

MDGL Sold 1,577 shares at $492.42 $0.8M Jan 26

MDGL Sold 2,400 shares at $575.34 $1.4M Dec 4

Open-market trades from SEC Form 4 only: no grants, option exercises or gifts. People are matched by the name on their filings, so two people with the same name share this page. For information only — not investment advice.