Form 4 Tracker
INSMED Inc
INSM

49 insider filings · Latest: Aug 10, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
Jan 8, 2025Jan 8 10:31 PMBonstein Sara
Proposed Sale
1,464$66.04$96.7K

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Jan 8, 2025Jan 8 10:26 PMFlammer Martina M.D.
Proposed Sale
1,702$66.15$112.6K

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Jan 8, 2025Jan 8 10:17 PMAdsett Roger
Proposed Sale
1,882$66.10$124.4K

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Jan 8, 2025Jan 8 9:57 PMSmith Michael Alexander
Proposed Sale
1,064$66.21$70.4K

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Jan 8, 2025Jan 8 9:52 PMWise John Drayton
Proposed Sale
392$66.21$26.0K

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Jan 8, 2025Jan 8 9:47 PMSchaeffer Orlov S Nicole
Proposed Sale
1,209$65.84$79.6K

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Jan 8, 2025Jan 8 9:39 PMLewis William
Proposed Sale
3,999$65.95$263.7K

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Jan 7, 2025Jan 7 11:03 PMBonstein Sara
Proposed Sale
3,470$66.11$229.4K

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Jan 7, 2025Jan 7 10:54 PMFlammer Martina M.D.
Proposed Sale
3,344$65.91$220.4K

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Jan 7, 2025Jan 7 10:45 PMAdsett Roger
Proposed Sale
2,444$66.11$161.6K

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Jan 7, 2025Jan 7 10:36 PMSmith Michael Alexander
Proposed Sale
2,306$65.98$152.1K

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Jan 7, 2025Jan 7 10:22 PMWise John Drayton
Proposed Sale
10,000$65.95$659.5K

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Jan 7, 2025Jan 7 10:17 PMWise John Drayton
Proposed Sale
2,908$65.87$191.5K

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Jan 7, 2025Jan 7 10:10 PMSchaeffer Orlov S Nicole
Proposed Sale
2,596$65.88$171.0K

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Jan 7, 2025Jan 7 9:56 PMLewis William
Proposed Sale
8,218$66.01$542.5K

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Jan 2, 2025Jan 2 9:37 PMLewis William
Proposed Sale
25,580$69.82$1.8M

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Dec 19, 2024Dec 19 9:29 PMLewis William
Proposed Sale
25,580$69.88$1.8M

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Dec 12, 2024Dec 12 9:29 PMLewis William
Proposed Sale
25,580$72.94$1.9M

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Sep 13, 2024Sep 13 8:28 PMSmith Michael Alexander
Proposed Sale
27,871$74.60$2.1M

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Sep 10, 2024Sep 10 8:14 PMSchaeffer Orlov S Nicole
Proposed Sale
37,575$71.30$2.7M

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Aug 10, 2026Aug 12 9:04 PMRoger AdsettChief Operating Officer
Option Exercise
239,850$30.460(D)

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Aug 6, 2026Aug 7 8:39 PMMartina M.D. FlammerChief Medical Officer
Option Exercise
27,173$25.8335,580(D)

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Jul 23, 2026Jul 24 9:02 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,700$30.460(D)

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Jul 9, 2026Jul 10 8:02 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.464,440(D)

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Jul 6, 2026Jul 8 8:03 PMMartina M.D. FlammerChief Medical Officer
Option Exercise
12,302$29.134,358(D)

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Jun 25, 2026Jun 26 8:03 PMWilliam LewisDirector, Chair and CEO
Option Exercise
21,398$30.468,880(D)

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Jun 23, 2026Jun 24 8:15 PMSamuele ButeraSVP, GM, Global Respiratory
Grant/Award
12,570$102.1512,570(D)

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May 18, 2026May 20 8:06 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4617,760(D)

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May 11, 2026May 13 8:50 PMMartina M.D. FlammerChief Medical Officer
Option Exercise
12,949$17.070(D)

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May 4, 2026May 6 8:11 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4622,200(D)

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Apr 16, 2026Apr 17 8:43 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4626,640(D)

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Apr 6, 2026Apr 8 8:41 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4631,080(D)

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Apr 1, 2026Apr 3 8:07 PMRoger AdsettChief Operating Officer
Option Exercise
88,060$14.560(D)

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Mar 30, 2026Mar 31 8:13 PMMichael Alexander SmithChief Legal Officer
Option Exercise
19,638$27.8918,561(D)

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Mar 19, 2026Mar 20 8:05 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4635,520(D)

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Mar 5, 2026Mar 5 9:16 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4639,960(D)

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Feb 24, 2026Feb 25 9:04 PMMichael Alexander SmithChief Legal Officer
Option Exercise
20,248$17.0714,282(D)

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Feb 19, 2026Feb 23 9:34 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4644,400(D)

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Feb 9, 2026Feb 11 9:42 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4668,850(D)

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Feb 2, 2026Feb 4 9:15 PMMartina M.D. FlammerChief Medical Officer
Option Exercise
7,982$65.7223,948(D)

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