Over the past 12 months, 9 insiders at INSMED Inc filed 163 open-market SEC Form 4 transactions on INSM: 0 purchases worth $0 and 163 sales worth $151.8M. Insiders have been net sellers over this period. The most recent filing was on Jul 23, 26.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Jul 23, 26 | William LewisChair and CEO, Director | SELL | 5.9K | $106.43 | $625K |
| Jul 9, 26 | William LewisChair and CEO | SELL | 5.0K | $118.52 | $583K |
| Jul 6, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 7.4K | $110.60 | $824K |
| Jun 5, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 1.9K | $103.78 | $193K |
| Jun 3, 26 | Roger AdsettChief Operating Officer | SELL | 2.4K | $102.27 | $242K |
| Jun 3, 26 | Sara BonsteinChief Financial Officer | SELL | 2.4K | $102.27 | $246K |
| Jun 3, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 2.6K | $102.27 | $262K |
| May 14, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 10.5K | $117.54 | $1.2M |
| May 13, 26 | Roger AdsettChief Operating Officer | SELL | 5.8K | $116.18 | $678K |
| May 13, 26 | Sara BonsteinChief Financial Officer | SELL | 8.3K | $116.18 | $961K |
| May 13, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 4.5K | $116.18 | $504K |
| May 11, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 12.1K | $101.18 | $1.2M |
| Mar 30, 26 | Michael Alexander SmithChief Legal Officer | SELL | 19.6K | $150.98 | $3.0M |
| Mar 19, 26 | William LewisChair and CEO | SELL | 4.5K | $144.11 | $653K |
| Mar 5, 26 | William LewisChair and CEO | SELL | 3.9K | $147.54 | $572K |
| Feb 24, 26 | Michael Alexander SmithChief Legal Officer | SELL | 15.8K | $156.53 | $2.5M |
| Feb 19, 26 | William LewisChair and CEO | SELL | 3.4K | $153.38 | $516K |
| Feb 9, 26 | William LewisChair and CEO | SELL | 7.2K | $148.83 | $1.1M |
| Feb 5, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 869 | $152.44 | $132K |
| Feb 3, 26 | Roger AdsettChief Operating Officer | SELL | 791 | $156.17 | $124K |
| Feb 3, 26 | Sara BonsteinChief Financial Officer | SELL | 748 | $156.34 | $117K |
| Feb 3, 26 | William LewisChair and CEO | SELL | 3.0K | $156.34 | $470K |
| Feb 3, 26 | Michael Alexander SmithChief Legal Officer | SELL | 640 | $156.27 | $100K |
| Feb 3, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 795 | $155.77 | $124K |
| Feb 2, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 3.3K | $156.86 | $518K |
| Jan 20, 26 | William LewisChair and CEO | SELL | 6.0K | $160.70 | $949K |
| Jan 12, 26 | William LewisChair and CEO | SELL | 7.2K | $174.86 | $1.2M |
| Jan 9, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 1.9K | $186.19 | $351K |
| Jan 8, 26 | Roger AdsettChief Operating Officer | SELL | 2.1K | $174.17 | $359K |
| Jan 8, 26 | Sara BonsteinChief Financial Officer | SELL | 1.4K | $174.17 | $252K |
| Jan 8, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 3.3K | $174.17 | $566K |
| Jan 8, 26 | William LewisChair and CEO | SELL | 3.2K | $174.17 | $561K |
| Jan 8, 26 | Michael Alexander SmithChief Legal Officer | SELL | 1.1K | $174.17 | $183K |
| Jan 7, 26 | Roger AdsettChief Operating Officer | SELL | 802 | $175.07 | $140K |
| Jan 7, 26 | Sara BonsteinChief Financial Officer | SELL | 1.7K | $175.07 | $294K |
| Jan 7, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 1.4K | $175.84 | $252K |
| Jan 7, 26 | William LewisChair and CEO | SELL | 2.4K | $175.07 | $413K |
| Jan 7, 26 | Michael Alexander SmithChief Legal Officer | SELL | 709 | $175.07 | $124K |
| Jan 6, 26 | Roger AdsettChief Operating Officer | SELL | 1.4K | $173.33 | $248K |
| Jan 6, 26 | Sara BonsteinChief Financial Officer | SELL | 1.5K | $173.33 | $263K |
| Jan 6, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 4.8K | $175.01 | $830K |
| Jan 6, 26 | William LewisChair and CEO | SELL | 4.1K | $173.33 | $710K |
| Jan 6, 26 | Michael Alexander SmithChief Legal Officer | SELL | 1.4K | $173.33 | $242K |
| Jan 5, 26 | Martina M.d. FlammerChief Medical Officer | SELL | 3.2K | $175.73 | $547K |
| Jan 2, 26 | Schaeffer Orlov S NicoleChief People Strategy Officer | SELL | 34.1K | $177.78 | $6.0M |
| Dec 18, 25 | William LewisChair and CEO | SELL | 2.2K | $171.20 | $367K |
| Dec 5, 25 | Melvin Md SharokyDirector | SELL | 20.0K | $205.01 | $4.1M |
| Dec 4, 25 | William LewisChair and CEO | SELL | 4.5K | $207.42 | $924K |
| Dec 1, 25 | Martina M.d. FlammerChief Medical Officer | SELL | 5.9K | $207.73 | $1.2M |
| Nov 24, 25 | Elizabeth M AndersonDirector | SELL | 5.0K | $204.58 | $1.0M |
Over the past 12 months, insiders at INSMED Inc filed 0 open-market purchases worth $0 and 163 sales worth $151.8M on INSM, which makes them net sellers over the period. The most recent Form 4 was filed on Jul 23, 26.
9 different insiders at INSMED Inc filed open-market SEC Form 4 transactions on INSM over the last 12 months.
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