INSMED Inc
INSM
51 insider filings · Latest: Sep 9, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| May 13, 2026 | May 15 8:07 PM | Michael Alexander SmithChief Legal Officer | Sale | 4,109 | $116.18 | $477.4K | 47,762(D) | View → |
| May 13, 2026 | May 15 8:06 PM | William LewisDirector, Chair and CEO | Sale | 13,283 | $116.18 | $1.5M | 287,902(D) | View → |
| May 14, 2026 | May 14 9:20 PM | Martina Flammer | Proposed Sale | 10,479 | $117.53 | $1.2M | — | View → |
| May 13, 2026 | May 13 9:24 PM | Roger Adsett | Proposed Sale | 5,837 | $116.18 | $678.1K | — | View → |
| May 13, 2026 | May 13 9:18 PM | Michael Smith | Proposed Sale | 4,109 | $116.18 | $477.4K | — | View → |
| May 13, 2026 | May 13 9:17 PM | Sara Bonstein | Proposed Sale | 8,272 | $116.18 | $961.0K | — | View → |
| May 13, 2026 | May 13 9:17 PM | Martina Flammer | Proposed Sale | 7,854 | $114.23 | $897.1K | — | View → |
| May 13, 2026 | May 13 9:14 PM | William Lewis | Proposed Sale | 13,283 | $116.18 | $1.5M | — | View → |
| May 11, 2026 | May 13 8:50 PM | Martina M.D. FlammerChief Medical Officer | Sale | 12,949 | $100.40 | $1.3M | 83,243(D) | View → |
| May 11, 2026 | May 11 8:46 PM | Martina Flammer | Proposed Sale | 12,949 | $100.40 | $1.3M | — | View → |
| May 4, 2026 | May 6 8:11 PM | William LewisDirector, Chair and CEO | Sale | 10,699 | $137.34 | $1.5M | 301,185(D) | View → |
| May 4, 2026 | May 4 8:55 PM | William Lewis | Proposed Sale | 10,699 | $137.35 | $1.5M | — | View → |
| Apr 16, 2026 | Apr 17 8:43 PM | William LewisDirector, Chair and CEO | Sale | 10,699 | $143.97 | $1.5M | 301,185(D) | View → |
| Apr 16, 2026 | Apr 16 8:17 PM | William Lewis | Proposed Sale | 10,699 | $143.97 | $1.5M | — | View → |
| Apr 6, 2026 | Apr 8 8:41 PM | William LewisDirector, Chair and CEO | Sale | 10,699 | $163.22 | $1.7M | 301,185(D) | View → |
| Apr 6, 2026 | Apr 6 8:42 PM | William Lewis | Proposed Sale | 10,699 | $163.22 | $1.7M | — | View → |
| Apr 1, 2026 | Apr 3 8:07 PM | Roger AdsettChief Operating Officer | Sale | 88,060 | $164.63 | $14.5M | 106,810(D) | View → |
| Apr 1, 2026 | Apr 1 9:10 PM | Roger Adsett | Proposed Sale | 88,060 | $164.27 | $14.5M | — | View → |
| Mar 30, 2026 | Mar 31 8:13 PM | Michael Alexander SmithChief Legal Officer | Sale | 19,638 | $150.98 | $3.0M | 51,871(D) | View → |
| Mar 30, 2026 | Mar 30 9:31 PM | Michael Smith | Proposed Sale | 19,638 | $150.98 | $3.0M | — | View → |
Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Jan 20, 2026 | Jan 22 9:28 PM | William LewisDirector, Chair and CEO | Option Exercise | 10,699 | $30.46 | 53,280(D) | View → |
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