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INSMED Inc

INSM
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001104506

In the last 90 days, INSMED Inc insiders filed 0 open-market purchases and 7 sales; 667 institutions reported holding it in 13F filings for Q2 2026, worth $23.8B in total; superinvestors Maverick Capital and Duquesne Family Office hold it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by INSMED Inc insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
7 filings
5 insiders, $42.9M in total
Insiders trading
5
Net value
−$42.9M
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for INSMED Inc, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for INSMED Inc
NameTitleLast reported holdingLast filingFilings, past year
Brennan David RDirector39,238Sep 11, 20264
Sharoky Melvin MDDirector0IndirectAug 19, 20265
Adsett RogerChief Operating Officer98,744Aug 12, 20267
Flammer Martina M.D.Chief Medical Officer60,486Aug 7, 202612
Lewis WilliamChair and CEO259,058Jul 24, 202621
Smith Michael AlexanderChief Legal Officer37,648Jun 24, 202610
Butera SamueleSVP, GM, Global Respiratory7,342Jun 24, 20261
Bonstein SaraChief Financial Officer69,082Jun 5, 20265
Schafer CarolDirector66,622May 15, 20261
Lee LeoDirector57,971May 15, 20262
Anderson Elizabeth MDirector62,034May 15, 20263
Desjardins ClarissaDirector70,312May 15, 20261
McGirr David W JDirector53,400IndirectFeb 11, 20261
Schaeffer Orlov S NicoleChief People Strategy Officer41,754Jan 6, 20262
Wise John DraytonChief Commercial Officer133,015Feb 7, 20250
Altomari AlfredDirector69,495May 15, 20240
Engelsen Steinar JDirector320,802Nov 3, 20210
Soriano JohnChief Compliance Officer35,204Sep 9, 20210

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
May 15, 2025 (view filing)May 13-142 daysBonstein SaraChief Financial OfficerSSale−10.5K$67.47−$708.7K−8.8%108.4K after2 lots
May 15, 2025 (view filing)May 13-142 daysAdsett RogerChief Operating OfficerSSale−9.41K$67.36−$633.7K−6.4%136.7K after2 lots
May 2, 2025 (view filing)May 11 dayLewis WilliamChair and CEOSSale−6.83K$72.57−$495.7K−2.8%233.9K after2 lots10b5-1
Apr 16, 2025 (view filing)Apr 151 dayLewis WilliamChair and CEOSSale−6.83K$70.16−$479.2K−2.8%233.9K after3 lots10b5-1
Apr 3, 2025 (view filing)Apr 12 daysLewis WilliamChair and CEOSSale−6.83K$73.58−$502.6K−2.8%233.9K after4 lots10b5-1
Mar 19, 2025 (view filing)Mar 172 daysLewis WilliamChair and CEOSSale−18.8K$77.03−$1.44M−5.3%334.2K after3 lots10b5-1
Mar 19, 2025 (view filing)Mar 172 daysLewis WilliamChair and CEOSSale−6.83K$77.04−$526.2K−2.8%233.9K after3 lots10b5-1
Mar 5, 2025 (view filing)Mar 32 daysLewis WilliamChair and CEOSSale−18.8K$77.79−$1.46M−5.3%334.2K after5 lots10b5-1
Mar 5, 2025 (view filing)Mar 32 daysLewis WilliamChair and CEOSSale−6.83K$77.79−$531.3K−2.8%233.9K after5 lots10b5-1
Feb 20, 2025 (view filing)Feb 182 daysLewis WilliamChair and CEOSSale−18.8K$81.03−$1.52M−5.3%334.2K after3 lots10b5-1
Feb 20, 2025 (view filing)Feb 182 daysLewis WilliamChair and CEOSSale−6.83K$81.03−$553.4K−2.8%233.9K after3 lots10b5-1
Feb 20, 2025 (view filing)Feb 182 daysBonstein SaraChief Financial OfficerSSale−18.3K$80.31−$1.47M−13.4%118.9K after2 lots10b5-1
Feb 13, 2025 (view filing)Feb 11-122 daysBonstein SaraChief Financial OfficerSSale−18.3K$80.00−$1.47M−11.8%137.2K after2 lots10b5-1
Feb 12, 2025 (view filing)Feb 102 daysAdsett RogerChief Operating OfficerSSale−43.0K$78.61−$3.38M−22.7%146.1K after3 lots10b5-1
Feb 12, 2025 (view filing)Feb 102 daysFlammer Martina M.D.Chief Medical OfficerSSale−37.8K$78.61−$2.97M−27.4%100.2K after3 lots10b5-1
Feb 7, 2025 (view filing)Feb 6-71 dayFlammer Martina M.D.Chief Medical OfficerSSale−33.1K$80.90−$2.68M−19.4%138.0K after2 lots
Feb 7, 2025 (view filing)Feb 61 daySchaeffer Orlov S NicoleChief People Strategy OfficerSSale−23.5K$80.90−$1.90M−16.3%120.9K after
Feb 7, 2025 (view filing)Feb 6-71 dayAdsett RogerChief Operating OfficerSSale−45.7K$80.90−$3.70M−19.5%189.1K after2 lots
Feb 7, 2025 (view filing)Feb 61 dayLewis WilliamChair and CEOSSale−79.3K$80.90−$6.42M−14.9%453.9K after
Feb 7, 2025 (view filing)Feb 6-71 dayWise John DraytonChief Commercial OfficerSSale−7.92K$80.90−$640.7K−5.6%133.0K after2 lots
Feb 7, 2025 (view filing)Feb 61 dayBonstein SaraChief Financial OfficerSSale−28.4K$80.90−$2.30M−15.4%155.5K after
Feb 7, 2025 (view filing)Feb 61 daySmith Michael AlexanderChief Legal OfficerSSale−20.6K$80.90−$1.67M−17.6%96.6K after
Feb 5, 2025 (view filing)Feb 32 daysLewis WilliamChair and CEOSSale−18.8K$77.94−$1.46M−4.7%379.5K after4 lots10b5-1
Feb 5, 2025 (view filing)Feb 32 daysLewis WilliamChair and CEOSSale−6.83K$77.94−$532.3K−2.8%233.9K after4 lots10b5-1
Jan 31, 2025 (view filing)Jan 301 daySchaeffer Orlov S NicoleChief People Strategy OfficerSSale−91.1K$80.00−$7.29M−48.4%97.1K after10b5-1
Jan 16, 2025 (view filing)Jan 142 daysFlammer Martina M.D.Chief Medical OfficerSSale−1.38K$68.72−$95.1K−1.4%100.2K after10b5-1
Jan 16, 2025 (view filing)Jan 142 daysAdsett RogerChief Operating OfficerSSale−1.46K$68.72−$100.1K−1.0%146.1K after10b5-1
Jan 16, 2025 (view filing)Jan 142 daysSchaeffer Orlov S NicoleChief People Strategy OfficerSSale−872$68.72−$59.9K−0.9%97.1K after10b5-1
Jan 16, 2025 (view filing)Jan 151 dayLewis WilliamChair and CEOSSale−31.8K$70.18−$2.23M−7.7%379.5K after3 lots10b5-1
Jan 16, 2025 (view filing)Jan 151 dayLewis WilliamChair and CEOSSale−6.83K$70.17−$479.3K−2.8%233.9K after3 lots10b5-1
Jan 10, 2025 (view filing)Jan 7-103 daysFlammer Martina M.D.Chief Medical OfficerSSale−11.2K$64.70−$725.8K−9.9%101.5K after4 lots10b5-1
Jan 10, 2025 (view filing)Jan 7-103 daysBonstein SaraChief Financial OfficerSSale−6.00K$65.43−$392.6K−4.8%118.9K after3 lots
Jan 10, 2025 (view filing)Jan 7-103 daysSchaeffer Orlov S NicoleChief People Strategy OfficerSSale−7.86K$64.74−$509.0K−7.4%98.0K after4 lots10b5-1
Jan 10, 2025 (view filing)Jan 7-103 daysWise John DraytonChief Commercial OfficerSSale−13.6K$65.95−$896.1K−9.8%125.6K after4 lots10b5-1
Jan 10, 2025 (view filing)Jan 7-103 daysLewis WilliamChair and CEOSSale−15.2K$65.48−$995.0K−3.7%392.6K after3 lots
Jan 10, 2025 (view filing)Jan 7-103 daysSmith Michael AlexanderChief Legal OfficerSSale−3.69K$65.82−$242.8K−5.0%70.0K after3 lots
Jan 10, 2025 (view filing)Jan 7-103 daysAdsett RogerChief Operating OfficerSSale−9.23K$64.78−$597.8K−5.9%147.5K after4 lots10b5-1
Jan 3, 2025 (view filing)Jan 21 dayLewis WilliamChair and CEOSSale−18.8K$69.84−$1.31M−4.6%385.0K after10b5-1
Jan 3, 2025 (view filing)Jan 21 dayLewis WilliamChair and CEOSSale−6.83K$69.86−$477.1K−2.8%233.9K after10b5-1
Dec 20, 2024 (view filing)Dec 191 dayLewis WilliamChair and CEOSSale−18.8K$69.91−$1.31M−4.6%385.0K after2 lots10b5-1
Dec 20, 2024 (view filing)Dec 191 dayLewis WilliamChair and CEOSSale−6.83K$69.92−$477.6K−2.8%233.9K after2 lots10b5-1
Dec 13, 2024 (view filing)Dec 121 dayLewis WilliamChair and CEOSSale−18.8K$72.97−$1.37M−4.6%385.0K after3 lots10b5-1
Dec 13, 2024 (view filing)Dec 121 dayLewis WilliamChair and CEOSSale−6.83K$72.98−$498.5K−2.8%233.9K after3 lots10b5-1
Sep 16, 2024 (view filing)Sep 133 daysSmith Michael AlexanderChief Legal OfficerSSale−27.9K$74.35−$2.07M−29.1%67.9K after2 lots10b5-1
Sep 16, 2024 (view filing)Sep 12-164 daysFlammer Martina M.D.Chief Medical OfficerSSale−41.0K$74.91−$3.07M−27.9%106.1K after3 lots10b5-1
Sep 10, 2024 (view filing)Sep 10Same daySchaeffer Orlov S NicoleChief People Strategy OfficerSSale−37.6K$71.50−$2.69M−27.3%100.1K after2 lots10b5-1
Sep 10, 2024 (view filing)Sep 64 daysFlammer Martina M.D.Chief Medical OfficerSSale−149.0K$71.23−$10.6M−58.4%106.1K after3 lots10b5-1
Aug 14, 2024 (view filing)Aug 122 daysSmith Michael AlexanderChief Legal OfficerSSale−88.1K$72.96−$6.43M−49.8%88.7K after2 lots
Aug 14, 2024 (view filing)Aug 122 daysSchaeffer Orlov S NicoleChief People Strategy OfficerSSale−9.47K$72.49−$686.4K−8.6%100.1K after
Jun 12, 2024 (view filing)Jun 102 daysFlammer Martina M.D.Chief Medical OfficerSSale−21.2K$60.00−$1.27M−16.6%106.1K after10b5-1