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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 CEO2025-07-152,168$101.71
$220.51kSell
William LewisChair and CEO2025-07-154,492$102.66
$461.15kSell
William LewisChair and CEO2025-07-15170$103.32
$17.56kSell
Michael Alexander SmithChief Legal Officer2025-07-15933$102.51
$95.64kSell
William LewisChair and CEO2025-07-156,830$10.85
$74.11kBuy
Michael Alexander SmithChief Legal Officer2025-07-11748$96.41
$72.11kSell
Sara BonsteinChief Financial Officer2025-07-074,362$24.70
$107.74kBuy
Sara BonsteinChief Financial Officer2025-07-0723,565$26.43
$622.82kBuy
Sara BonsteinChief Financial Officer2025-07-0713,717$26.46
$362.95kBuy
Sara BonsteinChief Financial Officer2025-07-0735,583$95.66
$3.40MSell

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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$2.29BInsider
Vanguard Group Inc10.03%18,268,122$1.91BInstitution
Blackrock Inc8.81%16,048,882$1.68BInstitution
Darwin Global Management Ltd8.45%15,397,975$1.61BInstitution
Price T Rowe Associates Inc7.10%12,923,541$1.35BInstitution
Capital International Investors3.95%7,198,485$752.89MInstitution
Jpmorgan Chase Co3.49%6,354,022$664.57MInstitution
State Street Corp3.16%5,747,293$601.11MInstitution
Baker Bros Advisors LP2.95%5,380,626$562.76MInstitution
Geode Capital Management LLC2.35%4,288,735$448.56MInstitution

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INSM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
INSM84.00%16.00%Net SellingNet Selling
RPRX56.29%17.86%Net BuyingNet Buying
SMMT7.21%92.79%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, 20.73% 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 $2.28B.

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