Madrigal Pharmaceuticals, Inc. (MDGL) ownership: Baker Bros. Advisors LP and affiliates 28% · institutions 100% · index and ETF funds 6% (13F 2026-03-31). Insider activity, 90 days: 12 sales, 0 open-market buys. 1 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Baker BROS. Advisors LP | 2141701.00 | $1.12B | 9.3% | 2026-03-31 |
| Janus Henderson | 2018647.00 | $1.05B | 8.7% | 2026-03-31 |
| RTW Investments, LP | 1993687.00 | $1.04B | 8.6% | 2026-03-31 |
| Vanguard | 1823927.00 | $954.77M | 7.9% | 2026-03-31 |
| Avoro Capital Advisors LLC | 1818181.00 | $951.76M | 7.9% | 2026-03-31 |
| BlackRock | 1559965.00 | $816.59M | 6.8% | 2026-03-31 |
| Paulson & Co. Inc. | 1392188.00 | $728.77M | 6.0% | 2026-03-31 |
| Wellington Management | 694958.00 | $363.79M | 3.0% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-17 | |
| Sell | null | 2026-08-15 | |
| Sell | null | 2026-08-15 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 | |
| Sell | null | 2026-07-17 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.