INSM Insider Trading

Insmed Inc · full profile →Last filing Jul 9, 2026
Net Selling · 180d
Open-Market Buys (180d)
$0
0 insiders
Open-Market Sells (180d)
$53.1M
5 insiders
Net Insider Flow
-$53.1M
open market, 180d
Reporting Insiders
5
77 P/S transactions
Build

Build on these Form 4 transactions

The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.

Recent Form 4 Transactions

100 shown
DateInsiderRoleActionSharesPriceValue
Jul 9, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
Jul 9, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
Jul 9, 2026Lewis WilliamChair and CEO, DirectorSell(S)5K$116.55$583K
Jul 9, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$117.62$275K
Jul 9, 2026Lewis WilliamChair and CEO, DirectorSell(S)3K$118.52$398K
Jul 9, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
Jul 9, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)8K$29.13$231K
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)4K$19.74$86K
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)5K$109.02$529K
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)7K$110.60$824K
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)8K$0
Jul 6, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)4K$0
Jun 25, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)13K$30.46$381K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)9K$17.16$152K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorSell(S)12K$102.34$1.2M
Jun 25, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$103.10$189K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorSell(S)4K$104.28$388K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$105.27$259K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorSell(S)1K$106.27$137K
Jun 25, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)13K$0
Jun 25, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)9K$0
Jun 23, 2026Butera SamueleSVP, GM, Global RespiratoryGrant(A)7K
Jun 23, 2026Butera SamueleSVP, GM, Global RespiratoryGrant(A)13K$0
Jun 22, 2026Smith Michael AlexanderChief Legal OfficerSell(S)2K$95.82$173K
Jun 8, 2026Lewis WilliamChair and CEO, DirectorSell(S)7K$94.03$613K
Jun 5, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)2K$103.78$193K
Jun 3, 2026Adsett RogerChief Operating OfficerSell(S)2K$102.27$242K
Jun 3, 2026Bonstein SaraChief Financial OfficerSell(S)2K$102.27$246K
Jun 3, 2026Lewis WilliamChair and CEO, DirectorSell(S)8K$102.27$778K
Jun 3, 2026Smith Michael AlexanderChief Legal OfficerSell(S)2K$102.27$221K
Jun 3, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)3K$102.27$262K
May 22, 2026Smith Michael AlexanderChief Legal OfficerSell(S)6K$108.47$667K
May 18, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
May 18, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
May 18, 2026Lewis WilliamChair and CEO, DirectorSell(S)6K$105.32$606K
May 18, 2026Lewis WilliamChair and CEO, DirectorSell(S)12K$106.39$1.3M
May 18, 2026Lewis WilliamChair and CEO, DirectorSell(S)8K$106.97$853K
May 18, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
May 18, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
May 14, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)10K$117.54$1.2M
May 13, 2026Anderson Elizabeth MDirectorGrant(A)3K
May 13, 2026Adsett RogerChief Operating OfficerSell(S)6K$116.18$678K
May 13, 2026Bonstein SaraChief Financial OfficerSell(S)8K$116.18$961K
May 13, 2026Brennan David RDirectorGrant(A)3K
May 13, 2026Desjardins ClarissaDirectorGrant(A)3K
May 13, 2026Schafer CarolDirectorGrant(A)3K
May 13, 2026Lewis WilliamChair and CEO, DirectorSell(S)13K$116.18$1.5M
May 13, 2026Lee LeoDirectorGrant(A)3K
May 13, 2026Smith Michael AlexanderChief Legal OfficerSell(S)4K$116.18$477K
May 13, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)4K$112.76$504K
May 13, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)3K$116.18$393K
May 13, 2026Sharoky Melvin MDDirectorGrant(A)3K
May 11, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)13K$17.07$221K
May 11, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)12K$100.35$1.2M
May 11, 2026Flammer Martina M.D.Chief Medical OfficerSell(S)830$101.18$84K
May 11, 2026Flammer Martina M.D.Chief Medical OfficerOption exercise(M)13K$0
May 4, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
May 4, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)433$134.18$58K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)599$135.18$81K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)5K$137.01$729K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)3K$137.86$375K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)1K$139.09$173K
May 4, 2026Lewis WilliamChair and CEO, DirectorSell(S)381$139.60$53K
May 4, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
May 4, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
Apr 16, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$142.99$321K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorSell(S)5K$143.81$773K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$144.66$326K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorSell(S)825$145.79$120K
Apr 16, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
Apr 16, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
Apr 6, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
Apr 6, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
Apr 6, 2026Lewis WilliamChair and CEO, DirectorSell(S)787$161.73$127K
Apr 6, 2026Lewis WilliamChair and CEO, DirectorSell(S)8K$163.23$1.4M
Apr 6, 2026Lewis WilliamChair and CEO, DirectorSell(S)1K$164.01$235K
Apr 6, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
Apr 6, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
Apr 1, 2026Adsett RogerChief Operating OfficerOption exercise(M)88K$14.56$1.3M
Apr 1, 2026Adsett RogerChief Operating OfficerSell(S)7K$163.18$1.1M
Apr 1, 2026Adsett RogerChief Operating OfficerSell(S)19K$164.11$3.1M
Apr 1, 2026Adsett RogerChief Operating OfficerSell(S)62K$164.95$10.3M
Apr 1, 2026Adsett RogerChief Operating OfficerOption exercise(M)88K$0
Mar 30, 2026Smith Michael AlexanderChief Legal OfficerOption exercise(M)14K$27.89$390K
Mar 30, 2026Smith Michael AlexanderChief Legal OfficerOption exercise(M)6K$17.07$96K
Mar 30, 2026Smith Michael AlexanderChief Legal OfficerSell(S)20K$150.98$3.0M
Mar 30, 2026Smith Michael AlexanderChief Legal OfficerOption exercise(M)14K$0
Mar 30, 2026Smith Michael AlexanderChief Legal OfficerOption exercise(M)6K$0
Mar 19, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$17.16$76K
Mar 19, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$30.46$191K
Mar 19, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$142.17$232K
Mar 19, 2026Lewis WilliamChair and CEO, DirectorSell(S)5K$143.42$651K
Mar 19, 2026Lewis WilliamChair and CEO, DirectorSell(S)5K$144.11$653K
Mar 19, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)6K$0
Mar 19, 2026Lewis WilliamChair and CEO, DirectorOption exercise(M)4K$0
Mar 5, 2026Lewis WilliamChair and CEO, DirectorSell(S)2K$147.54$314K

Data Source

Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.

Coverage: Form 4 filings indexed 2021-01-042026-07-21. Earlier history is backfilling; this window widens as it deepens.

Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).