Insmed Incorporated

NasdaqGS:INSM Stock Report

Market Cap: US$24.2b

Insmed Ownership

Who are the major shareholders and have insiders been buying or selling?

Recent Insider Transactions

NasdaqGS:INSM Recent Insider Transactions by Companies or Individuals
DateValueNameEntityRoleSharesMax Price
03 Jun 26SellUS$262,425Martina FlammerIndividual2,566US$102.27
03 Jun 26SellUS$777,763William LewisIndividual7,605US$102.27
03 Jun 26SellUS$220,801Michael SmithIndividual2,159US$102.27
03 Jun 26SellUS$245,857Sara BonsteinIndividual2,404US$102.27
03 Jun 26SellUS$242,380Roger AdsettIndividual2,370US$102.27
13 May 26SellUS$1,543,219William LewisIndividual13,283US$116.18
13 May 26SellUS$477,384Michael SmithIndividual4,109US$116.18
13 May 26SellUS$897,190Martina FlammerIndividual7,854US$116.18
13 May 26SellUS$678,143Roger AdsettIndividual5,837US$116.18
13 May 26SellUS$961,041Sara BonsteinIndividual8,272US$116.18
03 Feb 26SellUS$100,013Michael SmithIndividual640US$156.27
03 Feb 26SellUS$123,530Roger AdsettIndividual791US$156.17
03 Feb 26SellUS$116,942Sara BonsteinIndividual748US$156.34
03 Feb 26SellUS$123,837Martina FlammerIndividual795US$155.77
03 Feb 26SellUS$470,427William LewisIndividual3,009US$156.34
08 Jan 26SellUS$549,494Michael SmithIndividual3,158US$175.07
08 Jan 26SellUS$808,733Sara BonsteinIndividual4,642US$175.07
08 Jan 26SellUS$746,711Roger AdsettIndividual4,290US$175.07
08 Jan 26SellUS$1,683,950William LewisIndividual9,676US$175.07
08 Jan 26SellUS$820,707Martina FlammerIndividual4,709US$175.84
05 Dec 25SellUS$4,100,200Melvin SharokyIndividual20,000US$205.01
24 Nov 25SellUS$1,022,900Elizabeth AndersonIndividual5,000US$204.58
17 Nov 25SellUS$14,692,249Leo LeeIndividual75,000US$197.40
14 Nov 25SellUS$1,958,700Elizabeth AndersonIndividual10,000US$195.87
12 Sep 25SellUS$1,453,900Melvin SharokyIndividual10,000US$145.39
20 Aug 25SellUS$1,295,000Melvin SharokyIndividual10,000US$129.50
19 Aug 25SellUS$3,189,586Roger AdsettIndividual25,000US$128.27
14 Aug 25SellUS$1,273,363S. SchaefferIndividual10,000US$128.16
12 Aug 25SellUS$1,215,800Melvin SharokyIndividual10,000US$121.58
11 Jul 25SellUS$72,115Michael SmithIndividual748US$96.41

Insider Trading Volume

Insider Buying: INSM insiders have only sold shares in the past 3 months.

Ownership Breakdown

What is the ownership structure of INSM?
Owner TypeNumber of SharesOwnership Percentage
State or Government89,6470.04%
Individual Insiders1,559,0920.696%
Hedge Funds16,805,1847.5%
Institutions205,565,48991.8%

Dilution of Shares: Shareholders have not been meaningfully diluted in the past year.

Top Shareholders

Top 25 shareholders own 72.02% of the company
OwnershipNameSharesCurrent ValueChange %Portfolio %
9.22%
JP Morgan Asset Management
19,990,249US$2.2b2.31%0.18%
7.75%
Darwin Global Management Limited
16,805,184US$1.9b-19.7%45.28%
7.69%
BlackRock, Inc.
16,678,146US$1.9b10.7%0.02%
6.01%
FMR LLC
13,019,170US$1.5b33%0.06%
4.79%
Vanguard Portfolio Management, LLC
10,371,802US$1.2b0%0.05%
4.45%
Vanguard Capital Management, LLC
9,642,131US$1.1b0%0.02%
3.42%
Baker Bros. Advisors LP
7,421,111US$828.2m12.6%4.1%
3.21%
Capital Research and Management Company
6,957,485US$776.5m35.1%0.03%
3.01%
Artisan Partners Limited Partnership
6,527,301US$728.4m34.8%0.47%
2.6%
D. E. Shaw & Co., L.P.
5,625,825US$627.8m29.3%0.47%
2.56%
State Street Global Advisors, Inc.
5,551,699US$619.6m6.73%0.02%
2.23%
RTW Investments, LP
4,842,880US$540.5m0%4.48%
2.05%
Geode Capital Management, LLC
4,450,389US$496.7m3.52%0.02%
1.92%
JPMorgan Chase & Co.
4,153,415US$463.5m13.7%0.06%
1.43%
T. Rowe Price Group, Inc.
3,092,807US$345.2m-23.4%0.03%
1.41%
Columbia Management Investment Advisers, LLC
3,057,718US$341.2m55.3%0.06%
1.36%
UBS Asset Management AG
2,952,506US$329.5m5.04%0.02%
1.34%
Norges Bank Investment Management
2,910,971US$324.9m0%0.02%
1.06%
Franklin Resources, Inc.
2,288,995US$255.5m-8.43%0.07%
1.01%
Citadel Advisors LLC
2,182,571US$243.6m88.6%0.16%
0.86%
Orbis Investment Management Limited
1,872,824US$209.0m-55.2%0.48%
0.69%
Integral Health Asset Management, LLC
1,500,000US$167.4m20%7.55%
0.68%
Westfield Capital Management Company, L.P.
1,468,459US$163.9m240%0.59%
0.64%
SEI Investments Company
1,395,794US$155.8m56.8%0.11%
0.62%
Vanguard Fiduciary Trust Company
1,354,516US$151.2m2.03%0.02%

Company Analysis and Financial Data Status

DataLast Updated (UTC time)
Company Analysis2026/07/06 04:24
End of Day Share Price 2026/07/06 00:00
Earnings2026/03/31
Annual Earnings2025/12/31

Data Sources

The data used in our company analysis is from S&P Global Market Intelligence LLC. The following data is used in our analysis model to generate this report. Data is normalised which can introduce a delay from the source being available.

PackageDataTimeframeExample US Source *
Company Financials10 years
  • Income statement
  • Cash flow statement
  • Balance sheet
Analyst Consensus Estimates+3 years
  • Forecast financials
  • Analyst price targets
Market Prices30 years
  • Stock prices
  • Dividends, Splits and Actions
Ownership10 years
  • Top shareholders
  • Insider trading
Management10 years
  • Leadership team
  • Board of directors
Key Developments10 years
  • Company announcements

* Example for US securities, for non-US equivalent regulatory forms and sources are used.

Unless specified all financial data is based on a yearly period but updated quarterly. This is known as Trailing Twelve Month (TTM) or Last Twelve Month (LTM) Data. Learn more.

Analysis Model and Snowflake

Details of the analysis model used to generate this report is available on our Github page, we also have guides on how to use our reports and tutorials on Youtube.

Learn about the world class team who designed and built the Simply Wall St analysis model.

Industry and Sector Metrics

Our industry and section metrics are calculated every 6 hours by Simply Wall St, details of our process are available on Github.

Analyst Sources

Insmed Incorporated is covered by 42 analysts. 20 of those analysts submitted the estimates of revenue or earnings used as inputs to our report. Analysts submissions are updated throughout the day.

AnalystInstitution
Neena Bitritto-GargBaird
Eliana MerleBarclays
Anita DushyanthBerenberg