INSMED (INSM) stock: insider trades, news & valuation
Heavy selling
Close · Oct 9, 2026
$100.60
+0.1% on the day
-38.8% over 12 months
52-week range $91.88 – $211.41
Share price and insider trades
INSM closeInsider buyInsider sale
Bought, 12 months$0
Sold, 12 months$167M
Insiders buying0
Insiders selling10
INSMED insider trading at a glance (Oct 9, 2026): in the past 12 months, 0 insiders bought $0 and 10 sold $167M of INSM stock on the open market.
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INSM insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | — | 0 | $42.9M | 12 |
| Q2 2026 | — | 0 | $34.7M | 42 |
| Q1 2026 | — | 0 | $45.2M | 74 |
| Q4 2025 | — | 0 | $44.3M | 41 |
Valuation, profit and volume
P/E (trailing)n/aSector median —
Market value—
Profit margin—Revenue growth —
Volume vs. 50-day1.6×Last 5 sessions
Insiders' paper profit—On all tracked purchases —
Summary
Over the past 12 months, 0 INSMED Inc insiders reported open-market purchases totaling $0, while 10 insiders reported sales totaling $167M. 130 of 169 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Sep 11SEC | David R BrennanDirector | Sell | 25,00039,238 held (−39%) | $124.00 | $3.1M | -18.9% | — |
| Aug 19SEC | Melvin Md SharokyDirector | Sell | 5,000 | $127.53 | $638K | -21.1% | — |
| Aug 12SEC | Roger AdsettCOO | Sell | 239,85098,744 held (−71%) | $133.27 | $32.0M | -24.5% | — |
| Aug 7SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 18,27860,486 held (−23%) | $129.40 | $2.4M | -22.3% | — |
| Aug 7SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 8,89578,764 held (−10%) | $127.00 | $1.1M | -20.8% | — |
| Jul 24SEC | William LewisCEO, Chair | Sell Plan | 5,872259,058 held (−2%) | $106.43 | $625K | -5.5% | — |
| Jul 24SEC | William LewisCEO, Chair | Sell Plan | 4,828264,930 held (−2%) | $105.62 | $510K | -4.8% | — |
| Jul 10SEC | William LewisCEO, Chair | Sell Plan | 5,005264,752 held (−2%) | $116.55 | $583K | -13.7% | — |
| Jul 10SEC | William LewisCEO, Chair | Sell Plan | 3,359259,058 held (−1%) | $118.52 | $398K | -15.1% | — |
| Jul 10SEC | William LewisCEO, Chair | Sell Plan | 2,335262,417 held (−1%) | $117.62 | $275K | -14.5% | — |
| Jul 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 7,44860,486 held (−11%) | $110.60 | $824K | -9.0% | — |
| Jul 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 4,85467,934 held (−7%) | $109.02 | $529K | -7.7% | — |
| Jun 26SEC | William LewisCEO, Chair | Sell Plan | 12,091268,224 held (−4%) | $102.34 | $1.2M | -1.7% | — |
| Jun 26SEC | William LewisCEO, Chair | Sell Plan | 3,723262,665 held (−1%) | $104.28 | $388K | -3.5% | — |
| Jun 26SEC | William LewisCEO, Chair | Sell Plan | 2,456260,209 held (−1%) | $105.27 | $259K | -4.4% | — |
| Jun 26SEC | William LewisCEO, Chair | Sell Plan | 1,836266,388 held (−1%) | $103.10 | $189K | -2.4% | — |
| Jun 26SEC | William LewisCEO, Chair | Sell Plan | 1,292258,917 held (−0%) | $106.27 | $137K | -5.3% | — |
| Jun 24SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 1,80637,648 held (−5%) | $95.82 | $173K | +5.0% | — |
| Jun 10SEC | William LewisCEO, Chair | Sell Plan | 6,515258,917 held (−2%) | $94.03 | $613K | +7.0% | — |
| Jun 5SEC | William LewisCEO, Chair | Sell | 7,605265,432 held (−3%) | $102.27 | $778K | -1.6% | — |
| Jun 5SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 2,56662,344 held (−4%) | $102.27 | $262K | -1.6% | — |
| Jun 5SEC | Sara BonsteinCFO | Sell | 2,40469,082 held (−3%) | $102.27 | $246K | -1.6% | — |
| Jun 5SEC | Roger AdsettCOO | Sell | 2,37098,603 held (−2%) | $102.27 | $242K | -1.6% | — |
| Jun 5SEC | Michael Alexander SmithGeneral Counsel | Sell | 2,15939,454 held (−5%) | $102.27 | $221K | -1.6% | — |
| Jun 5SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,85860,486 held (−3%) | $103.78 | $193K | -3.1% | — |
| May 22SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 6,14941,613 held (−13%) | $108.47 | $667K | -7.3% | — |
| May 20SEC | William LewisCEO, Chair | Sell Plan | 11,836281,012 held (−4%) | $106.39 | $1.3M | -5.4% | — |
| May 20SEC | William LewisCEO, Chair | Sell Plan | 7,975273,037 held (−3%) | $106.97 | $853K | -6.0% | — |
| May 20SEC | William LewisCEO, Chair | Sell Plan | 5,753292,848 held (−2%) | $105.32 | $606K | -4.5% | — |
| May 15SEC | William LewisCEO, Chair | Sell | 13,283287,902 held (−4%) | $116.18 | $1.5M | -13.4% | — |
| May 15SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 10,47964,910 held (−14%) | $117.54 | $1.2M | -14.4% | — |
| May 15SEC | Sara BonsteinCFO | Sell | 8,27271,486 held (−10%) | $116.18 | $961K | -13.4% | — |
| May 15SEC | Roger AdsettCOO | Sell | 5,837100,973 held (−5%) | $116.18 | $678K | -13.4% | — |
| May 15SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 4,47078,773 held (−5%) | $112.76 | $504K | -10.8% | — |
| May 15SEC | Michael Alexander SmithGeneral Counsel | Sell | 4,10947,762 held (−8%) | $116.18 | $477K | -13.4% | — |
| May 15SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 3,38475,389 held (−4%) | $116.18 | $393K | -13.4% | — |
| May 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 12,11984,073 held (−13%) | $100.35 | $1.2M | +0.2% | — |
| May 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 83083,243 held (−1%) | $101.18 | $84K | -0.6% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 5,318305,534 held (−2%) | $137.01 | $729K | -26.6% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 2,721302,813 held (−1%) | $137.86 | $375K | -27.0% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 1,247301,566 held (−0%) | $139.09 | $173K | -27.7% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 599310,852 held (−0%) | $135.18 | $81K | -25.6% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 433311,451 held (−0%) | $134.18 | $58K | -25.0% | — |
| May 6SEC | William LewisCEO, Chair | Sell Plan | 381301,185 held (−0%) | $139.60 | $53K | -27.9% | — |
| Apr 17SEC | William LewisCEO, Chair | Sell Plan | 5,373304,265 held (−2%) | $143.81 | $773K | -30.0% | — |
| Apr 17SEC | William LewisCEO, Chair | Sell Plan | 2,255302,010 held (−1%) | $144.66 | $326K | -30.5% | — |
| Apr 17SEC | William LewisCEO, Chair | Sell Plan | 2,246309,638 held (−1%) | $142.99 | $321K | -29.6% | — |
| Apr 17SEC | William LewisCEO, Chair | Sell Plan | 825301,185 held (−0%) | $145.79 | $120K | -31.0% | — |
| Apr 8SEC | William LewisCEO, Chair | Sell Plan | 8,478302,619 held (−3%) | $163.23 | $1.4M | -38.4% | — |
| Apr 8SEC | William LewisCEO, Chair | Sell Plan | 1,434301,185 held (−0%) | $164.01 | $235K | -38.7% | — |
| Apr 8SEC | William LewisCEO, Chair | Sell Plan | 787311,097 held (−0%) | $161.73 | $127K | -37.8% | — |
| Apr 3SEC | Roger AdsettCOO | Sell Plan | 62,344106,810 held (−37%) | $164.95 | $10.3M | -39.0% | — |
| Apr 3SEC | Roger AdsettCOO | Sell Plan | 19,001169,154 held (−10%) | $164.11 | $3.1M | -38.7% | — |
| Apr 3SEC | Roger AdsettCOO | Sell Plan | 6,715188,155 held (−3%) | $163.18 | $1.1M | -38.4% | — |
| Mar 31SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 19,63851,871 held (−27%) | $150.98 | $3.0M | -33.4% | — |
| Mar 20SEC | William LewisCEO, Chair | Sell Plan | 4,533301,185 held (−1%) | $144.11 | $653K | -30.2% | — |
| Mar 20SEC | William LewisCEO, Chair | Sell Plan | 4,537305,718 held (−1%) | $143.42 | $651K | -29.9% | — |
| Mar 20SEC | William LewisCEO, Chair | Sell Plan | 1,629310,255 held (−1%) | $142.17 | $232K | -29.2% | — |
| Mar 5SEC | William LewisCEO, Chair | Sell Plan | 3,899303,313 held (−1%) | $146.66 | $572K | -31.4% | — |
| Mar 5SEC | William LewisCEO, Chair | Sell Plan | 2,589307,212 held (−1%) | $145.27 | $376K | -30.7% | — |
| Mar 5SEC | William LewisCEO, Chair | Sell Plan | 2,128301,185 held (−1%) | $147.54 | $314K | -31.8% | — |
| Mar 5SEC | William LewisCEO, Chair | Sell Plan | 2,083309,801 held (−1%) | $144.23 | $300K | -30.3% | — |
| Feb 25SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 15,77151,871 held (−23%) | $156.53 | $2.5M | -35.7% | — |
| Feb 25SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 4,85271,793 held (−6%) | $153.93 | $747K | -34.6% | — |
| Feb 25SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 4,15167,642 held (−6%) | $155.06 | $644K | -35.1% | — |
| Feb 23SEC | William LewisCEO, Chair | Sell Plan | 3,413304,592 held (−1%) | $151.12 | $516K | -33.4% | — |
| Feb 23SEC | William LewisCEO, Chair | Sell Plan | 2,377302,215 held (−1%) | $151.92 | $361K | -33.8% | — |
| Feb 23SEC | William LewisCEO, Chair | Sell Plan | 1,988309,896 held (−1%) | $149.17 | $297K | -32.6% | — |
| Feb 23SEC | William LewisCEO, Chair | Sell Plan | 1,891308,005 held (−1%) | $150.10 | $284K | -33.0% | — |
| Feb 23SEC | William LewisCEO, Chair | Sell Plan | 1,030301,185 held (−0%) | $153.38 | $158K | -34.4% | — |
| Feb 11SEC | William LewisCEO, Chair | Sell Plan | 7,221302,472 held (−2%) | $148.02 | $1.1M | -32.0% | — |
| Feb 11SEC | William LewisCEO, Chair | Sell Plan | 4,888309,693 held (−2%) | $147.17 | $719K | -31.6% | — |
| Feb 11SEC | William LewisCEO, Chair | Sell Plan | 1,287301,185 held (−0%) | $148.83 | $192K | -32.4% | — |
| Feb 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 86983,243 held (−1%) | $152.44 | $132K | -34.0% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 3,34988,049 held (−4%) | $154.56 | $518K | -34.9% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 3,04285,007 held (−3%) | $155.46 | $473K | -35.3% | — |
| Feb 4SEC | William LewisCEO, Chair | Sell | 3,009303,882 held (−1%) | $156.34 | $470K | -35.7% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 92891,398 held (−1%) | $153.16 | $142K | -34.3% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 79584,112 held (−1%) | $155.77 | $124K | -35.4% | — |
| Feb 4SEC | Roger AdsettCOO | Sell | 791106,810 held (−1%) | $156.17 | $124K | -35.6% | — |
| Feb 4SEC | Sara BonsteinCFO | Sell | 74879,758 held (−1%) | $156.34 | $117K | -35.7% | — |
| Feb 4SEC | Michael Alexander SmithGeneral Counsel | Sell | 64056,397 held (−1%) | $156.27 | $100K | -35.6% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 56392,326 held (−1%) | $152.06 | $86K | -33.8% | — |
| Feb 4SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 10084,907 held (−0%) | $156.86 | $16K | -35.9% | — |
| Jan 22SEC | William LewisCEO, Chair | Sell Plan | 5,967309,374 held (−2%) | $158.99 | $949K | -36.7% | — |
| Jan 22SEC | William LewisCEO, Chair | Sell Plan | 2,229307,145 held (−1%) | $159.85 | $356K | -37.1% | — |
| Jan 22SEC | William LewisCEO, Chair | Sell Plan | 1,243315,341 held (−0%) | $158.37 | $197K | -36.5% | — |
| Jan 22SEC | William LewisCEO, Chair | Sell Plan | 1,006316,584 held (−0%) | $156.80 | $158K | -35.8% | — |
| Jan 22SEC | William LewisCEO, Chair | Sell Plan | 254306,891 held (−0%) | $160.70 | $41K | -37.4% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 7,176314,956 held (−2%) | $168.63 | $1.2M | -40.3% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 6,996307,960 held (−2%) | $169.57 | $1.2M | -40.7% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 3,974322,132 held (−1%) | $167.73 | $667K | -40.0% | — |
| Jan 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,88784,907 held (−2%) | $186.19 | $351K | -46.0% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 315306,891 held (−0%) | $174.86 | $55K | -42.5% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 297307,206 held (−0%) | $172.36 | $51K | -41.6% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 297307,503 held (−0%) | $171.31 | $51K | -41.3% | — |
| Jan 13SEC | William LewisCEO, Chair | Sell Plan | 160307,800 held (−0%) | $170.24 | $27K | -40.9% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 4,78398,541 held (−5%) | $173.47 | $830K | -42.0% | — |
| Jan 8SEC | William LewisCEO, Chair | Sell | 4,096320,987 held (−1%) | $173.33 | $710K | -42.0% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 3,25186,794 held (−4%) | $174.17 | $566K | -42.2% | — |
| Jan 8SEC | William LewisCEO, Chair | Sell | 3,223315,407 held (−1%) | $174.17 | $561K | -42.2% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 2,83095,711 held (−3%) | $174.21 | $493K | -42.3% | — |
| Jan 8SEC | William LewisCEO, Chair | Sell | 2,357318,630 held (−1%) | $175.07 | $413K | -42.5% | — |
| Jan 8SEC | Roger AdsettCOO | Sell | 2,059107,601 held (−2%) | $174.17 | $359K | -42.2% | — |
| Jan 8SEC | Sara BonsteinCFO | Sell | 1,67881,953 held (−2%) | $175.07 | $294K | -42.5% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,66090,045 held (−2%) | $173.87 | $289K | -42.1% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,61593,139 held (−2%) | $173.33 | $280K | -42.0% | — |
| Jan 8SEC | Sara BonsteinCFO | Sell | 1,51783,631 held (−2%) | $173.33 | $263K | -42.0% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,43491,705 held (−2%) | $175.84 | $252K | -42.8% | — |
| Jan 8SEC | Sara BonsteinCFO | Sell | 1,44780,506 held (−2%) | $174.17 | $252K | -42.2% | — |
| Jan 8SEC | Roger AdsettCOO | Sell | 1,429110,462 held (−1%) | $173.33 | $248K | -42.0% | — |
| Jan 8SEC | Michael Alexander SmithGeneral Counsel | Sell | 1,39658,799 held (−2%) | $173.33 | $242K | -42.0% | — |
| Jan 8SEC | Michael Alexander SmithGeneral Counsel | Sell | 1,05357,037 held (−2%) | $174.17 | $183K | -42.2% | — |
| Jan 8SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 95794,754 held (−1%) | $175.01 | $167K | -42.5% | — |
| Jan 8SEC | Roger AdsettCOO | Sell | 802109,660 held (−1%) | $175.07 | $140K | -42.5% | — |
| Jan 8SEC | Michael Alexander SmithGeneral Counsel | Sell | 70958,090 held (−1%) | $175.07 | $124K | -42.5% | — |
| Jan 6SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell Plan | 34,10363,911 held (−35%) | $175.17 | $6.0M | -42.6% | — |
| Jan 6SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell Plan | 31,03098,014 held (−24%) | $174.28 | $5.4M | -42.3% | — |
| Jan 6SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell Plan | 12,83251,079 held (−20%) | $176.08 | $2.3M | -42.9% | — |
| Jan 6SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell Plan | 9,12541,954 held (−18%) | $177.17 | $1.6M | -43.2% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 3,205101,053 held (−3%) | $170.61 | $547K | -41.0% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 2,83698,217 held (−3%) | $171.19 | $485K | -41.2% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 2,799104,258 held (−3%) | $169.29 | $474K | -40.6% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,82096,111 held (−2%) | $173.45 | $316K | -42.0% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 70294,754 held (−1%) | $175.73 | $123K | -42.8% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 65595,456 held (−1%) | $174.28 | $114K | -42.3% | — |
| Jan 6SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 28697,931 held (−0%) | $171.92 | $49K | -41.5% | — |
| Jan 6SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell Plan | 20041,754 held (−0%) | $177.78 | $36K | -43.4% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 2,175306,262 held (−1%) | $168.54 | $367K | -40.3% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 1,938304,324 held (−1%) | $169.58 | $329K | -40.7% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 1,783309,868 held (−1%) | $166.60 | $297K | -39.6% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 1,431308,437 held (−0%) | $167.29 | $239K | -39.9% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 1,465312,795 held (−0%) | $163.19 | $239K | -38.4% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 697311,651 held (−0%) | $165.21 | $115K | -39.1% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 447312,348 held (−0%) | $164.24 | $73K | -38.7% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 362303,962 held (−0%) | $170.26 | $62K | -40.9% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 350314,260 held (−0%) | $162.26 | $57K | -38.0% | — |
| Dec 19SEC | William LewisCEO, Chair | Sell Plan | 51303,911 held (−0%) | $171.20 | $9K | -41.2% | — |
| Dec 9SEC | Melvin Md SharokyDirector | Sell | 20,000243,948 held (−8%) | $205.01 | $4.1M | -50.9% | — |
| Dec 5SEC | William LewisCEO, Chair | Sell Plan | 4,516310,094 held (−1%) | $204.62 | $924K | -50.8% | — |
| Dec 5SEC | William LewisCEO, Chair | Sell Plan | 2,921304,951 held (−1%) | $206.49 | $603K | -51.3% | — |
| Dec 5SEC | William LewisCEO, Chair | Sell Plan | 2,222307,872 held (−1%) | $205.66 | $457K | -51.1% | — |
| Dec 5SEC | William LewisCEO, Chair | Sell Plan | 1,040303,911 held (−0%) | $207.42 | $216K | -51.5% | — |
| Dec 3SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 5,88684,670 held (−6%) | $207.03 | $1.2M | -51.4% | — |
| Dec 3SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,55983,111 held (−2%) | $207.73 | $324K | -51.6% | — |
| Dec 3SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 1,45090,556 held (−2%) | $205.98 | $299K | -51.2% | — |
| Nov 26SEC | Elizabeth M AndersonDirector | Sell | 5,00058,729 held (−8%) | $204.58 | $1.0M | -50.8% | — |
| Nov 18SEC | Leo LeeDirector | Sell | 24,07669,851 held (−26%) | $196.61 | $4.7M | -48.8% | — |
| Nov 18SEC | Leo LeeDirector | Sell | 17,594108,871 held (−14%) | $194.49 | $3.4M | -48.3% | — |
| Nov 18SEC | Leo LeeDirector | Sell | 15,17454,677 held (−22%) | $197.40 | $3.0M | -49.0% | — |
| Nov 18SEC | Leo LeeDirector | Sell | 14,94493,927 held (−14%) | $195.39 | $2.9M | -48.5% | — |
| Nov 18SEC | Elizabeth M AndersonDirector | Sell | 10,00063,729 held (−14%) | $195.87 | $2.0M | -48.6% | — |
| Nov 18SEC | Leo LeeDirector | Sell | 3,212126,465 held (−2%) | $193.51 | $622K | -48.0% | — |
| Nov 14SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell | 19,18336,625 held (−34%) | $194.44 | $3.7M | -48.3% | — |
| Nov 14SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell | 6,57555,808 held (−11%) | $193.64 | $1.3M | -48.0% | — |
| Nov 14SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell | 4,07862,383 held (−6%) | $192.45 | $785K | -47.7% | — |
| Nov 14SEC | Orlov S Nicole SchaefferChief People Strategy Officer | Sell | 16436,461 held (−0%) | $195.88 | $32K | -48.6% | — |
| Nov 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 12,22496,646 held (−11%) | $189.36 | $2.3M | -46.9% | — |
| Nov 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 10,62286,024 held (−11%) | $190.33 | $2.0M | -47.1% | — |
| Nov 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 5,467108,870 held (−5%) | $188.38 | $1.0M | -46.6% | — |
| Nov 13SEC | Martina M.d. FlammerChief Medical Officer | Sell Plan | 2,91383,111 held (−3%) | $191.04 | $556K | -47.3% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 7,61973,071 held (−9%) | $181.88 | $1.4M | -44.7% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 4,28668,785 held (−6%) | $182.60 | $783K | -44.9% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 4,03264,753 held (−6%) | $183.92 | $742K | -45.3% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 3,63657,874 held (−6%) | $185.93 | $676K | -45.9% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 3,24361,510 held (−5%) | $184.91 | $600K | -45.6% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 1,57256,302 held (−3%) | $187.15 | $294K | -46.2% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 1,40054,902 held (−2%) | $187.97 | $263K | -46.5% | — |
| Nov 5SEC | Michael Alexander SmithGeneral Counsel | Sell Plan | 1,34280,690 held (−2%) | $181.01 | $243K | -44.4% | — |
Insiders at INSMED Inc
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Roger AdsettCOO | — | $48.3M | Aug 12, 2026 | — |
| William LewisCEO, Chair | — | $32.8M | Jul 24, 2026 | — |
| Martina M.d. FlammerChief Medical Officer | — | $23.3M | Aug 7, 2026 | — |
| Orlov S Nicole SchaefferChief People Strategy Officer | — | $21.1M | Jan 6, 2026 | — |
| Leo LeeDirector | — | $14.7M | Nov 18, 2025 | — |
| Michael Alexander SmithGeneral Counsel | — | $14.0M | Jun 24, 2026 | — |
| Melvin Md SharokyDirector | — | $4.7M | Aug 19, 2026 | — |
| David R BrennanDirector | — | $3.1M | Sep 11, 2026 | — |
| Elizabeth M AndersonDirector | — | $3.0M | Nov 26, 2025 | — |
| Sara BonsteinCFO | — | $2.1M | Jun 5, 2026 | — |
INSM stock: common questions
Are INSMED Inc insiders buying INSM stock?
In the past 12 months, 0 insiders reported open-market purchases of INSM worth $0.
Are INSMED Inc insiders selling INSM stock?
10 insiders reported sales worth $167M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is INSM's 52-week range?
Over the past year INSM has traded between $91.88 and $211.41. It last closed at $100.60 on Oct 9, 2026.