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INSMNasdaq
INSMED Inc
Pharmaceutical Preparations · VA · CIK 1104506
INSMED Inc develops and commercializes therapies for serious diseases in respiratory, immunology, and rare conditions
$21.21B
Market cap
$104.74
Last close
+1.3%
1D
+6.2%
5D
2.7M
Volume
Price · last 39 sessions-25.2%
May 4L $91.88 · H $140.01Jun 29
202
Total filings
May 15, 2026
Last filing
12/31
Fiscal year end
DEFA14ADEFA14AApr 1, 2026DEFA14ADEFA14AApr 4, 2025DEFA14ADEFA14AApr 1, 2024DEFA14AFORM DEFA14AMar 31, 2023DEFA14AFORM DEFA14AApr 1, 2022DEFA14AFORM DEFA14AApr 1, 2021DEFA14ADEFA14AMar 31, 2020DEFA14ADEFA14AApr 4, 2019DEFA14ADEFA14AApr 5, 2018DEFA14ADEFA14AApr 7, 2017
Insider Activity
In the 90 days to Mar 30, 2026: 6 sold $45.2M.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 30, 2026 | Smith Michael AlexanderChief Legal Officer | Sell | 19,638 | $150.98 | $3.0M |
| Mar 19, 2026 | Lewis WilliamChair and CEO | Sell | 4,533 | $144.11 | $653K |
| Mar 19, 2026 | Lewis WilliamChair and CEO | Sell | 4,537 | $143.42 | $651K |
| Mar 19, 2026 | Lewis WilliamChair and CEO | Sell | 1,629 | $142.17 | $232K |
| Mar 5, 2026 | Lewis WilliamChair and CEO | Sell | 3,899 | $146.66 | $572K |
| Mar 5, 2026 | Lewis WilliamChair and CEO | Sell | 2,589 | $145.27 | $376K |
| Mar 5, 2026 | Lewis WilliamChair and CEO | Sell | 2,128 | $147.54 | $314K |
| Mar 5, 2026 | Lewis WilliamChair and CEO | Sell | 2,083 | $144.23 | $300K |
| Feb 24, 2026 | Smith Michael AlexanderChief Legal Officer | Sell | 15,771 | $156.53 | $2.5M |
| Feb 24, 2026 | Smith Michael AlexanderChief Legal Officer | Sell | 4,852 | $153.93 | $747K |
| Feb 24, 2026 | Smith Michael AlexanderChief Legal Officer | Sell | 4,151 | $155.06 | $644K |
| Feb 19, 2026 | Lewis WilliamChair and CEO | Sell | 3,413 | $151.12 | $516K |
| Feb 19, 2026 | Lewis WilliamChair and CEO | Sell | 2,377 | $151.92 | $361K |
| Feb 19, 2026 | Lewis WilliamChair and CEO | Sell | 1,988 | $149.17 | $297K |
| Feb 19, 2026 | Lewis WilliamChair and CEO | Sell | 1,891 | $150.10 | $284K |
| Feb 19, 2026 | Lewis WilliamChair and CEO | Sell | 1,030 | $153.38 | $158K |
| Feb 9, 2026 | Lewis WilliamChair and CEO | Sell | 7,221 | $148.02 | $1.1M |
| Feb 9, 2026 | Lewis WilliamChair and CEO | Sell | 4,888 | $147.17 | $719K |
| Feb 9, 2026 | Lewis WilliamChair and CEO | Sell | 1,287 | $148.83 | $192K |
| Feb 5, 2026 | Flammer Martina M.D.Chief Medical Officer | Sell | 869 | $152.44 | $132K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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