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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 CEO2026-01-202,229$159.85
$356.31kSell
William LewisChair and CEO2026-01-201,006$156.80
$157.74kSell
William LewisChair and CEO2026-01-206,259$30.46
$190.65kBuy
William LewisChair and CEO2026-01-204,440$17.16
$76.19kBuy
William LewisChair and CEO2026-01-201,243$158.37
$196.85kSell
William LewisChair and CEO2026-01-20254$160.70
$40.82kSell
William LewisChair and CEO2026-01-205,967$158.99
$948.69kSell
William LewisChair and CEO2026-01-12297$171.31
$50.88kSell
William LewisChair and CEO2026-01-12297$172.36
$51.19kSell
William LewisChair and CEO2026-01-12315$174.86
$55.08kSell

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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
Jpmorgan Chase Co10.81%23,047,676$3.62BInstitution
Richard S. Kollender10.28%21,924,540$3.44BInsider
Darwin Global Management Ltd9.59%20,457,445$3.21BInstitution
Vanguard Group Inc9.35%19,935,820$3.13BInstitution
Blackrock Inc5.80%12,364,904$1.94BInstitution
Fmr LLC4.30%9,180,963$1.44BInstitution
Capital International Investors3.54%7,553,853$1.18BInstitution
Price T Rowe Associates Inc3.25%6,931,466$1.09BInstitution
Baker Bros Advisors LP3.14%6,703,484$1.05BInstitution
D E Shaw Co Inc2.65%5,657,464$887.49MInstitution

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INSM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
INSM84.89%15.11%Net SellingNet Selling
ONC2.29%32.05%Net BuyingNet Selling
BNTX20.98%0.00%
RPRX56.76%17.29%Net SellingNet Selling
ALNY82.79%17.21%Net SellingNet Selling
View Top Biotech Stocks

Insmed Stock Ownership FAQ

Who owns Insmed?

Insmed (NASDAQ: INSM) is owned by 98.86% institutional shareholders, 17.59% Insmed insiders, and 0.00% retail investors. Richard S. Kollender is the largest individual Insmed shareholder, owning 21.92M shares representing 10.28% of the company. Richard S. Kollender's Insmed shares are currently valued at $3.44B.

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