William John Sibold - 03 Dec 2025 Form 4 Insider Report for MADRIGAL PHARMACEUTICALS, INC. (MDGL)

Reporting relationship: President and CEO, Director
Issuer ticker: MDGL
Reported as of: 03 Dec 2025
Net transaction value: -$1,380,816
SEC form: 4
Accepted by SEC: 04 Dec 2025, 17:26:58 UTC
Prior SEC filing: 09 Sep 2025
Next SEC filing: 26 Jan 2026
Source filing: View source filing
Reporting owner signature: /s/ Mardi Dier, as Attorney-in-Fact

Key filing fact

William John Sibold filed Form 4 for MADRIGAL PHARMACEUTICALS, INC. (MDGL) on 04 Dec 2025.

Key facts

This page summarizes William John Sibold's Form 4 filing for MADRIGAL PHARMACEUTICALS, INC. (MDGL).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 04 Dec 2025, 17:26.

Change

Previous filing in this sequence was filed on 09 Sep 2025.
Current net transaction value: -$1,380,816.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001518611 Primary reporting owner

Sibold William John

Relationship: President and CEO, Director
Address: C/O MADRIGAL PHARMACEUTICALS, INC., 200 BARR HARBOR DRIVE, SUITE 200, WEST CONSHOHOCKEN
Signature: /s/ Mardi Dier, as Attorney-in-Fact
Signature date: 04 Dec 2025

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MDGL transaction

Common Stock

Options Exercise

Transaction value
Shares: +50,000
Change %: +49%
Price
Shares after: 152,474
Date: 03 Dec 2025
Ownership: Direct
Footnotes: F1

MDGL transaction

Common Stock

Sale

Transaction value: $1,380,816
Shares: -2,400
Change %: -1.6%
Price: $575.34
Shares after: 150,074
Date: 04 Dec 2025
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MDGL transaction Derivative

Performance Restricted Stock Units

Options Exercise

Transaction value
Shares: -50,000
Change %: -100%
Price
Shares after: 0
Date: 03 Dec 2025
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 50,000
Exercise price
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

On December 3, 2025, the Reporting Person earned 50,000 shares of common stock following the achievement of the performance and service conditions of the Performance Restricted Stock Units described in Footnote 3. Pursuant to the terms of the award, certain of these shares were sold to cover certain tax withholding obligations as described in Footnote 2 below. The Issuer is irrevocably obligated to issue the remaining shares to the Reporting Person on September 8, 2028, the fifth anniversary of the commencement of his employment with the Issuer.

Footnote F2

The sale reported on this line represents the number of shares sold by the Issuer on behalf of the Reporting Person to cover certain tax withholding obligations in connection with the Reporting Person earning 50,000 shares of common stock as described in Footnote 1 above. This sale was automatic and not at the discretion of the Reporting Person.

Footnote F3

On September 11, 2023, the Reporting Person was granted a one-time sign-on award of Performance Restricted Stock Units with a target award of 50,000 shares of common stock that can be earned upon the achievement of significant sustained stock price appreciation hurdles over a five-year period. The Reporting Person can earn up to 300% of the target award. Following the achievement of the first hurdle in February 2025 and the second hurdle reported on this line, the Reporting Person is eligible to earn an additional 50,000 shares upon the achievement of the final performance hurdle. See the Issuer's Schedule 14A filed with the Securities and Exchange Commission on April 29, 2024 for additional information about the Performance Restricted Stock Units.