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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
DEF 14ADEF 14AApr 1, 2026DEF 14ADEF 14AApr 4, 2025DEF 14ADEF 14AApr 1, 2024DEF 14ADEF 14AMar 31, 2023DEF 14ADEF 14AApr 1, 2022DEF 14ADEF14AApr 1, 2021DEF 14ADEF 14AMar 31, 2020DEF 14ADEF 14AApr 4, 2019DEF 14ADEF 14AApr 5, 2018DEF 14ADEF 14AApr 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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