Insmed Incorporated (INSM) ownership: Top institutional holder: JPMORGAN CHASE & CO ($3.70B). Insider activity: Net Seller (0 buys, 20 sells). 9 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| JPMORGAN CHASE & CO | 24150499.00 | $3.70B | 2026-03-31 |
| VANGUARD GROUP INC | 21076344.00 | $3.67B | 2025-12-31 |
| BlackRock, Inc. | 16678146.00 | $2.73B | 2026-03-31 |
| Darwin Global Management, Ltd. | 16805184.00 | $2.58B | 2026-03-31 |
| FMR LLC | 13160167.00 | $2.15B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 10371802.00 | $1.70B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 9642131.00 | $1.58B | 2026-03-31 |
| BAKER BROS. ADVISORS LP | 7421111.00 | $1.21B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-22 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 | |
| Sell | null | 2026-05-18 |
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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.