Companies / Insmed Inc
Insmed Inc
Nasdaq: INSMCIK 1104506BRIDGEWATER, NJ
Financials · FY2025
Ownership
218.4M shares outstanding · as of Jul 31, 2026
Ownership
| Insiders | 0.57% | 1,253,786 |
| 10%+ / strategic | 17.76% | 38,781,505 |
| Institutions | 87.32% | 190,696,870 |
| Public float | 0.00% | 0 |
Reported holdings exceed shares outstanding — public float shown as 0; some positions may overlap or lag.
% of common shares outstanding (exact, from the latest cover-page filing). Institutions are quarterly 13F snapshots; insiders reflect current officers & directors.
Insiders 14
View all →| Insider | % of shares | Shares |
|---|---|---|
Sharoky Melvin MdDirector | 0.12% | 261,054 |
Lewis WilliamCEOChair and CEO · Director | 0.12% | 258,917 |
Adsett RogerChief Operating Officer | 0.05% | 98,603 |
McGirr David W JDirector | 0.04% | 97,723 |
Desjardins ClarissaDirector | 0.03% | 70,312 |
Bonstein SaraChief Financial Officer | 0.03% | 69,082 |
Schafer CarolDirector | 0.03% | 66,622 |
Brennan David RDirector | 0.03% | 64,238 |
Anderson Elizabeth MDirector | 0.03% | 62,034 |
Flammer Martina M.D.Chief Medical Officer | 0.03% | 60,486 |
Institutional holders 681
View all →| Holder | Value | % of shares |
|---|---|---|
| $4.04B | 10.62% | |
| $3.67B | 9.65% | |
| $3.64B | 9.59% | |
| $1.73B | 4.55% | |
| $1.69B | 7.24% | |
| $1.21B | 3.40% | |
| $919.93M | 2.58% | |
| $896.60M | 2.36% | |
| $843.01M | 2.22% | |
| $842.85M | 2.22% |
Activity
InsidersInstitutions
What insiders are doing in this stock (Form 4).| Date | Actor | Action | Security | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|---|
| Apr 1, 2026 | Adsett Roger Executive | Sell | Common Stock | $10.28M | -62K -36.86% | 106,810 0.05% of shares | medium |
| Jan 2, 2026 | Schaeffer Orlov S Nicole Executive | Sell | Common Stock | $5.97M | -34K -34.79% | 63,911 0.03% of shares | medium |
| Jan 2, 2026 | Schaeffer Orlov S Nicole Executive | Sell | Common Stock | $5.41M | -31K -24.05% | 98,014 0.04% of shares | medium |
| Apr 1, 2026 | Adsett Roger Executive | Sell | Common Stock | $3.12M | -19K -10.10% | 169,154 0.08% of shares | medium |
| Mar 30, 2026 | Smith Michael Alexander Executive | Sell | Common Stock | $2.96M | -20K -27.46% | 51,871 0.02% of shares | medium |
| Feb 24, 2026 | Smith Michael Alexander Executive | Sell | Common Stock | $2.47M | -16K -23.32% | 51,871 0.02% of shares | medium |
| Jan 2, 2026 | Schaeffer Orlov S Nicole Executive | Sell | Common Stock | $2.26M | -13K -20.08% | 51,079 0.02% of shares | medium |
| Jan 2, 2026 | Schaeffer Orlov S Nicole Executive | Sell | Common Stock | $1.62M | -9K -17.86% | 41,954 0.02% of shares | medium |
5%+ ownership events
Schedule 13D / 13G
| Filer | Stance | % of class |
|---|---|---|
| Vanguard Group Inc | Passive13G/A | — |
| BlackRock, Inc. | Passive13G/A | — |
| Darwin Global Management, Ltd. | Passive13G/A | — |
| Vanguard Capital Management | Passive13G | — |
| Fmr LLC | Passive13G | — |
Securities
via CUSIP / OpenFIGI
| Symbol | Type | CUSIP |
|---|---|---|
| INSM | — | 457669307 |