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NASDAQ: INSM
Insmed Inc Stock Ownership - Who owns Insmed?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Insmed Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
William LewisChair and CEO2025-07-01815$99.61
$81.18kSell
William LewisChair and CEO2025-07-016,830$10.85
$74.11kBuy
William LewisChair and CEO2025-07-013,666$97.73
$358.28kSell
William LewisChair and CEO2025-07-012,349$98.83
$232.15kSell
Sara BonsteinChief Financial Officer2025-06-2335,253$18.95
$668.04kBuy
Sara BonsteinChief Financial Officer2025-06-2312,636$19.74
$249.43kBuy
Sara BonsteinChief Financial Officer2025-06-2349,104$101.71
$4.99MSell
Sara BonsteinChief Financial Officer2025-06-238,661$102.15
$884.72kSell
William LewisChair and CEO2025-06-1648,531$100.54
$4.88MSell
William LewisChair and CEO2025-06-1641,784$101.23
$4.23MSell

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Net Insider Buy/Sell (L12M) Ownership

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INSM Shareholders

What type of owners hold Insmed Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Richard S. Kollender12.04%21,924,540$2.14BInsider
Vanguard Group Inc10.03%18,268,122$1.79BInstitution
Blackrock Inc8.81%16,048,882$1.57BInstitution
Darwin Global Management Ltd8.45%15,397,975$1.51BInstitution
Price T Rowe Associates Inc7.10%12,923,541$1.26BInstitution
Capital International Investors3.95%7,198,485$704.01MInstitution
Jpmorgan Chase Co3.49%6,354,022$621.42MInstitution
State Street Corp3.16%5,747,293$562.09MInstitution
Baker Bros Advisors LP2.95%5,380,626$526.23MInstitution
Geode Capital Management LLC2.35%4,288,735$419.44MInstitution

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INSM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
INSM83.99%16.01%Net SellingNet Selling
SMMT7.21%92.79%Net BuyingNet Buying
RPRX56.29%17.86%Net BuyingNet Buying
GMAB98.03%0.00%
UTHR87.49%12.51%Net SellingNet Buying
View Top Biotech Stocks

Insmed Stock Ownership FAQ

Who owns Insmed?

Insmed (NASDAQ: INSM) is owned by 108.82% institutional shareholders, 20.74% Insmed insiders, and 0.00% retail investors. Richard S. Kollender is the largest individual Insmed shareholder, owning 21.92M shares representing 12.04% of the company. Richard S. Kollender's Insmed shares are currently valued at $2.14B.

If you're new to stock investing, here's how to buy Insmed stock.
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