As of November 7, 2026, Madrigal Pharmaceuticals, Inc. is a publicly traded company (Nasdaq: MDGL). The largest holder reporting an active stake on Schedule 13D is Baker Bros. Advisors LP, at 9.99%. No bankruptcy or receivership appears in its SEC Form 8-K filings. Passive holders reporting on Schedule 13G include Janus Henderson (8.8%), Paulson & Co. Inc. (6.1%) (Schedule 13D/A, November 6, 2026).
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Is Madrigal Pharmaceuticals, Inc. a real, registered company?
- Madrigal Pharmaceuticals, Inc. files with the SEC under CIK 1157601 (its SEC filings).
- Its shares are listed under the ticker MDGL on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in West Conshohocken, Pennsylvania, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Madrigal Pharmaceuticals, Inc. in our court records and SEC 8-K records (as of 2026-11-07).
- Leadership changes: the latest reported is John C. Reed (Form 8-K filed 2026-08-12). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names Baker Bros. Advisors LP (filed 2026-11-06).
Who are Madrigal Pharmaceuticals, Inc.'s owners and officers?
Madrigal Pharmaceuticals, Inc.: incorporated in Delaware; business address in West Conshohocken, Pennsylvania; industry Pharmaceutical Preparations (Schedule 13D/A, 2026-11-06).
| Report | Holder | Share |
|---|---|---|
| Schedule 13D/A, 2026-11-06 | Baker Bros. Advisors LP | 9.99% |
| Schedule 13G/A, 2026-07-29 | Blackrock, Inc. | 4.6% |
| Schedule 13G/A, 2026-05-15 | Janus Henderson Group PLC | 8.8% |
| Schedule 13G/A, 2026-05-15 | Paulson & Co. Inc. | 6.1% |
| Schedule 13G/A, 2026-03-27 | The Vanguard Group | 0% |
| Schedule 13G/A, 2026-02-17 | Janus Henderson Group PLC | 7% |
| Schedule 13G/A, 2026-02-17 | Paulson & Co. Inc. | 7.5% |
| Schedule 13D/A, 2025-12-12 | Paul A Friedman, M.D. | 7.8% |
| Schedule 13D/A, 2025-12-12 | Rebecca Taub, M.D. | 7.8% |
| Schedule 13G/A, 2025-11-14 | Janus Henderson Group PLC | 8.3% |
| Schedule 13G/A, 2025-08-14 | Janus Henderson Group PLC | 9.9% |
Questions about who owns Madrigal Pharmaceuticals, Inc.
Who owns Madrigal Pharmaceuticals, Inc.?
On this page, 5 holders' latest ownership filings report 5% or more of Madrigal Pharmaceuticals, Inc.: Baker Bros. Advisors LP (9.99%, Schedule 13D/A, filed 2026-11-06), Janus Henderson Group PLC (8.8%, Schedule 13G/A, filed 2026-05-15), Paul A Friedman, M.D. (7.8%, Schedule 13D/A, filed 2025-12-12), Rebecca Taub, M.D. (7.8%, Schedule 13D/A, filed 2025-12-12) and Paulson & Co. Inc. (6.1%, Schedule 13G/A, filed 2026-05-15).
Who are the largest shareholders of Madrigal Pharmaceuticals, Inc.?
By the share each holder's latest filing reports, the largest holders of Madrigal Pharmaceuticals, Inc. on this page are Baker Bros. Advisors LP (9.99%), Janus Henderson Group PLC (8.8%) and Paul A Friedman, M.D. (7.8%).
When did Baker Bros. Advisors LP buy into Madrigal Pharmaceuticals, Inc.?
The filings give report dates, not purchase dates. The earliest filing from Baker Bros. Advisors LP on this page is the Schedule 13D/A, filed 2026-11-06, reporting 9.99%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 11 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-08-12 | John C. Reed | appointed | 2026-08-11 |
Which insiders own Madrigal Pharmaceuticals, Inc. shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , a director: 2,040,682 shares (8.8% of shares outstanding), held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 4, 2026-11-06).
- , a director: 2,040,682 shares (8.8% of shares outstanding), held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 4, 2026-11-06).
- Baker Bros. Advisors LP, a director: 2,040,682 shares (8.8% of shares outstanding), held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 4, 2026-11-06).
- Baker Bros. Advisors (GP) LLC, a director: 2,040,682 shares (8.8% of shares outstanding), held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 4, 2026-11-06).
- 667, L.P., a director: 2,040,682 shares (8.8% of shares outstanding), held indirectly (the form names the holder only in its footnotes), on a joint filing (Form 4, 2026-11-06).
Shares outstanding: 23,229,561 as of 2026-10-29, from the company's latest SEC cover page.
How much has Madrigal Pharmaceuticals, Inc. raised?
No fundraising or offering filing from Madrigal Pharmaceuticals, Inc. is on file with us.
Keep reading
More on Madrigal Pharmaceuticals, Inc. and the records around it.
Madrigal Pharmaceuticals, Inc. elsewhere on the record
- 5%+ stake filings Nov 2026
- Leadership changes Aug 2026
Companies that share a holder
- Paul A Friedman, M.D. also filed stake reports on 1 other company: MADRIGAL PHARMACEUTICALS, INC. (Dec 2025)
- Rebecca Taub, M.D. also filed stake reports on 1 other company: MADRIGAL PHARMACEUTICALS, INC. (Dec 2025)
- PAULSON & CO. INC. also filed stake reports on 5 other companies: INTERNATIONAL TOWER HILL MINES LTD (Apr 2026), Bausch Health Companies Inc. (Aug 2025), NOVAGOLD RESOURCES INC (Aug 2025)
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