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© 2026 DataHeimdall. All rights reserved.Data sourced from SEC EDGAR public filings.
Insider Trades

INSM

INSMED Inc

Superinvestors

Institutional investors holding INSM

Consensus →
InvestorFundWeightSharesValueQuarter
Viking Global InvestorsViking Global Investors0.27%1,035,970$69.4M2024Q2
Meridian / ArrowMarkMeridian Contrarian Fund0.05%30,000$3.0M2025Q2

Congressional Activity

Congressional data coming soon

Insider Activity

31

Total trades

$24.5M

Volume

3

Buys

20

Sells

Last trade: May 13, 2026

Insider Tradeslast 90 days

DateInsiderTypeValue
May 13, 2026Elizabeth M AndersonBuy–
May 13, 2026Roger AdsettSell$678K

Congressional Tradeslast 90 days

Congressional trade data is being sourced and will appear here shortly.

May 13, 2026
Sara Bonstein
Sell
$961K
May 13, 2026David R BrennanBuy–
May 13, 2026Clarissa DesjardinsBuy–
May 11, 2026Martina Flammer M.D.Sell$1.2M
May 11, 2026Martina Flammer M.D.Sell$84K
May 11, 2026Martina Flammer M.D.Option$221K
May 4, 2026William LewisSell$58K
May 4, 2026William LewisSell$81K
May 4, 2026William LewisSell$729K
May 4, 2026William LewisSell$375K
May 4, 2026William LewisSell$173K
May 4, 2026William LewisSell$53K
May 4, 2026William LewisOption$191K
May 4, 2026William LewisOption$76K
Apr 16, 2026William LewisSell$321K
Apr 16, 2026William LewisSell$773K
Apr 16, 2026William LewisSell$326K
Apr 16, 2026William LewisSell$120K
Apr 16, 2026William LewisOption$191K
Apr 16, 2026William LewisOption$76K
Apr 6, 2026William LewisSell$1.4M
Apr 6, 2026William LewisSell$127K
Apr 6, 2026William LewisSell$235K
Apr 6, 2026William LewisOption$191K
Apr 6, 2026William LewisOption$76K
Apr 1, 2026Roger AdsettSell$1.1M
Apr 1, 2026Roger AdsettSell$3.1M
Apr 1, 2026Roger AdsettSell$10.3M
Apr 1, 2026Roger AdsettOption$1.3M