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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
Roger AdsettCOO2026-08-1082,280$13.67
$1.12MBuy
Roger AdsettCOO2026-08-10239,850$133.27
$31.96MSell
Roger AdsettCOO2026-08-1080,970$30.46
$2.47MBuy
Roger AdsettCOO2026-08-1076,600$17.16
$1.31MBuy
Martina Md FlammerMed2026-08-0618,278$129.40
$2.37MSell
Martina Md FlammerMed2026-08-068,895$127.00
$1.13MSell
Martina Md FlammerMed2026-08-068,895$25.83
$229.76kBuy
Martina Md FlammerMed2026-08-0618,278$18.95
$346.37kBuy
William LewisCEO;Chair2026-07-234,828$105.62
$509.93kSell
William LewisCEO;Chair2026-07-236,260$30.46
$190.68kBuy

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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. Kollender10.04%21,924,540$2.71BInsider
Fmr LLC1.73%3,785,818$468.46MInsider
Ayer Capital Management LP1.43%3,116,100$385.59MInsider
Geoffrey Allan0.79%1,715,557$212.28MInsider
William Lewis0.72%1,580,678$195.59MInsider
Kenneth G. Condon0.49%1,079,230$133.54MInsider
Graham K. Crooke0.42%915,394$113.27MInsider
Kevin P. Tully0.17%377,344$46.69MInsider
Steve C. Glover0.17%372,113$46.05MInsider
Melvin Md Sharoky0.15%335,459$41.51MInsider

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INSM vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
INSM0.10%17.36%Net SellingNet Selling
ROIV0.08%92.25%Net SellingNet Selling
MRNA0.08%23.99%Net BuyingNet Buying
INCY0.10%28.09%Net SellingNet Selling
BNTX0.02%16.46%Net Selling
View Top Biotech Stocks

Insmed Stock Ownership FAQ

Who owns Insmed?

Insmed (NASDAQ: INSM) is owned by 0.10% institutional shareholders, 17.36% Insmed insiders, and 82.54% retail investors. Richard S. Kollender is the largest individual Insmed shareholder, owning 21.92M shares representing 10.04% of the company. Richard S. Kollender's Insmed shares are currently valued at $2.71B.

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