BAKER BROS. ADVISORS LP - 06 Nov 2026 SCHEDULE 13D/A Report for Madrigal Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (MDGL)

Filing manager
BAKER BROS. ADVISORS LP
Reporting owner
Baker Bros. Advisors LP
Security
Madrigal Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share
Beneficially owned shares
2,330,144 shares
Ownership signal CIK-linked ownership evidence from parsed SEC filings. 2 signals
Large-stake signal

Form

SCHEDULE 13D/A

Active or control-oriented beneficial ownership filing.

Ownership

10%

Beneficial ownership of this reported class.

Shares

2,330,144 shares

Shares beneficially owned as disclosed.

Event date

06 Nov 2026

Date tied to the ownership event or amendment.

Accepted by SEC

06 Nov 2026

EDGAR acceptance date.

How to read this large-stake filing
  • Schedule 13D/G filings focus on beneficial ownership stakes, not a full portfolio.
  • Compare this filing with the holder history and issuer page before treating the percentage as a current position.
  • Use amendments to understand whether the disclosed stake increased, decreased, or changed reporting status.
Class ownership
10%
Subject security Names, identifiers, and filing context for this profile. 2 source fields
Symbol
MDGL
Shares outstanding
23,324,765 shares
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
SCHEDULE 13D/A
Accepted by SEC
06 Nov 2026, 18:15:25 UTC
Event date
06 Nov 2026
Source filing
View source filing
Filing notes and source

Key filing fact

BAKER BROS. ADVISORS LP disclosed 10% ownership in Madrigal Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (MDGL) on 06 Nov 2026.

Key facts

  • BAKER BROS. ADVISORS LP filed SCHEDULE 13D/A for Madrigal Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (MDGL).
  • Disclosed ownership: 10%.
  • Date of event: 06 Nov 2026.

Change

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 06 Nov 2026, 18:15.

Research use

  • This page turns one Schedule 13D/G filing into a quick large-stake read before the raw reporting-person rows.
  • Use the linked SEC filing as the source of truth for ownership percentages, shares, and reporting-party details.

Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

View source filing

Reporting persons

Disclosed reporting parties (4)

Names, ownership percentages, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.

Name Ownership Shares owned Sole voting power Shared voting power Signature Title CIK
Baker Bros. Advisors LP 10% 2,330,144 2,330,144 0 /s/ Scott L. Lessing Scott L. Lessing/ President By: Baker Bros. Advisors (GP) LLC, its general partner 0001263508
Baker Bros. Advisors (GP) LLC 10% 2,330,144 2,330,144 0 /s/ Scott L. Lessing Scott L. Lessing/ President 0001580575
Julian C. Baker 10% 2,330,144 2,330,144 0 /s/ Julian C. Baker Julian C. Baker 0001087939
Felix J. Baker 10% 2,330,144 2,330,144 0 /s/ Felix J. Baker Felix J. Baker 0001087940
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