Madrigal Pharmaceuticals director buys $35M of MDGL stock
Madrigal Pharmaceuticals
- $35,023,032.10[1]
- 91,806[1]
Madrigal Pharmaceuticals (MDGL) director Baker Bros. Advisors (GP) LLC bought $35,023,032.10 of company stock on Nov 4, 2026, a Form 4 filed with the SEC on Nov 6, 2026 shows. The filing reports a purchase (code P), submitted 2 days after the trade.[1]
| Security | Owner | Date | Code | Action | Quantity | Price | Following holdings | Reporting delay |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Baker Bros. Advisors (GP) LLC | 2026-11-04 | P | Purchase | 5,586 | $366.99 | 1,954,462 | 2 days |
| Common Stock | Baker Bros. Advisors (GP) LLC | 2026-11-04 | P | Purchase | 10,080 | $368.11 | 1,964,542 | 2 days |
| Common Stock | Baker Bros. Advisors (GP) LLC | 2026-11-06 | P | Purchase | 60,400 | $383.02 | 2,024,942 | 2 days |
| Common Stock | Baker Bros. Advisors (GP) LLC | 2026-11-06 | P | Purchase | 13,740 | $388.29 | 2,038,682 | 2 days |
| Common Stock | Baker Bros. Advisors (GP) LLC | 2026-11-06 | P | Purchase | 2,000 | $396.61 | 2,040,682 | 2 days |
What does the Form 4 show?
It lists 5 transactions for 91,806 shares, at an average $381.49 a share. Baker Bros. Advisors (GP) LLC owned 2,040,682 shares after the last one, 4.7% more than before the first purchase.[1]
What else has the filing history shown?
What does this filing not show?
A Form 4 reports one set of trades, filed 2 days after the trade. It does not show why Baker Bros. Advisors (GP) LLC traded or what else they own.[1]
MDGL insider trading activity
In open-market trades dated in the last 90 days, 1 insider bought $35M and 2 insiders sold $7M, $6.7M of it under preset trading plans, per Form 4 filings.
- Baker Bros. Advisors (GP) LLC (Director) bought 91,806 shares for $35M, last filed Nov 6.
- William John Sibold (President and CEO) sold 11,583 shares for $6.2M under a preset plan, last filed Sep 11.
- Shannon T. Kelley (General Counsel) sold 1,077 shares for $431K under a preset plan, last filed Nov 6.
- Shannon T. Kelley (General Counsel) sold 664 shares for $342K, last filed Aug 20.
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MDGL 13F fund activity
In 13F filings for the quarter ended Jun 30, 2026, 5 funds we track made a large change in MDGL: 4 opened a position or grew one by half or more, and 1 cut one by half or more.
- Susquehanna International Group, LLP added 126,394 shares.
- Marshall Wace, LLP added 79,957 shares.
- Balyasny Asset Management L.P. added 79,011 shares.
- Squarepoint Ops LLC cut 50,399 shares.
- Millennium Management LLC added 40,343 shares.
