Form 4 Tracker
INSMED Inc
INSM

49 insider filings · Latest: Aug 10, 2026

Common Stock Transactions
Txn DateAcceptedInsiderTypeSharesAvg PriceValueShares OwnedFiling
May 14, 2025May 14 9:45 PMLewis William
Proposed Sale
3,771$65.61$247.4K

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May 14, 2025May 14 9:39 PMFlammer Martina M.D.
Proposed Sale
1,744$65.61$114.4K

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May 14, 2025May 14 9:35 PMBonstein Sara
Proposed Sale
1,634$65.61$107.2K

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May 14, 2025May 14 9:30 PMAdsett Roger
Proposed Sale
1,925$65.61$126.3K

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May 13, 2025May 13 9:44 PMLewis William
Proposed Sale
17,442$67.81$1.2M

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May 13, 2025May 13 9:35 PMBonstein Sara
Proposed Sale
8,870$67.81$601.5K

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May 13, 2025May 13 9:32 PMFlammer Martina M.D.
Proposed Sale
8,408$67.81$570.1K

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May 13, 2025May 13 9:29 PMAdsett Roger
Proposed Sale
7,482$67.81$507.4K

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May 13, 2025May 13 9:18 PMSchaeffer Orlov S Nicole
Proposed Sale
4,999$67.81$339.0K

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May 13, 2025May 13 9:12 PMWise John Drayton
Proposed Sale
4,610$67.81$312.6K

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May 13, 2025May 13 9:03 PMSmith Michael Alexander
Proposed Sale
4,407$67.81$298.8K

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May 1, 2025May 1 8:33 PMLewis William
Proposed Sale
6,830$72.54$495.4K

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Apr 15, 2025Apr 15 8:41 PMLewis William
Proposed Sale
6,830$70.12$478.9K

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Apr 1, 2025Apr 1 8:48 PMLewis William
Proposed Sale
6,830$73.55$502.4K

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Mar 17, 2025Mar 17 9:03 PMLewis William
Proposed Sale
25,580$77.00$2.0M

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Mar 3, 2025Mar 3 10:53 PMLewis William
Proposed Sale
25,580$77.75$2.0M

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Feb 18, 2025Feb 18 10:31 PMLewis William
Proposed Sale
25,580$81.00$2.1M

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Feb 11, 2025Feb 11 9:42 PMBonstein Sara
Proposed Sale
36,643$80.00$2.9M

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Feb 10, 2025Feb 10 9:52 PMFlammer Martina M.D.
Proposed Sale
37,828$78.57$3.0M

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Feb 10, 2025Feb 10 9:45 PMAdsett Roger
Proposed Sale
42,975$78.57$3.4M

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Stock Options & Derivatives
Txn DateAcceptedInsiderTypeSharesExercise PriceShares OwnedFiling
Jan 20, 2026Jan 22 9:28 PMWilliam LewisDirector, Chair and CEO
Option Exercise
10,699$30.4653,280(D)

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