2m 2m 2m 2m 2m 2m 2m
Insmed (INSM)
NASDAQ
$125.95+$0.18 (+0.14%)
Price as of Aug 21, 2026 7:30 PM EDT- $27.5BMarket Cap
- -4.63%1-Year Change
- BiotechnologyIndustry
Insmed (INSM)
$125.95+$0.18 (+0.14%)
Top Holders
Institutional
Mutual Funds
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD GROUP INC | 9.72% | 21.1M | +1.1M (+5.41%) | Dec 31, 2025 |
FMR LLC | 7.45% | 16.1M | +3.0M (+18.48%) | Jun 30, 2026 |
BLACKROCK FUNDING, INC. /DE | 7.40% | 16.0M | +1.1M (+6.63%) | Dec 31, 2024 |
BLACKROCK, INC. | 7.29% | 15.8M | -870,162 (-5.50%) | Jun 30, 2026 |
BLACKROCK INC. | 6.58% | 14.3M | +2.5M (+17.28%) | Jun 30, 2024 |
JPMORGAN CHASE & CO | 4.81% | 10.4M | -13.7M (-131.59%) | Jun 30, 2026 |
N/A | 4.80% | 10.4M | +36,160 (+0.35%) | Jun 30, 2026 |
Holder | Ownership %
| Shares Held | Change (Shares, %) | Report Date |
|---|---|---|---|---|
VANGUARD INDEX FUNDS | 8.26% | 17.9M | +319,532 (+1.78%) | Mar 31, 2026 |
CALAMOS INVESTMENT TRUST/IL | 6.23% | 13.5M | 0 (0.00%) | Apr 30, 2026 |
JPMORGAN TRUST II | 5.62% | 12.2M | 0 (0.00%) | May 31, 2026 |
JANUS INVESTMENT FUND | 3.48% | 7.5M | 0 (0.00%) | Mar 31, 2026 |
Virtus Strategy Trust | 3.37% | 7.3M | 0 (0.00%) | Sep 30, 2025 |
GROWTH FUND OF AMERICA | 2.89% | 6.3M | +2.8M (+44.97%) | May 31, 2026 |
Virtus Convertible & Income 2024 Target Term Fund | 2.54% | 5.5M | 0 (0.00%) | Jul 31, 2024 |
Current Ownership Distribution
- Institutions3.2B (65.87%)
- Mutual Funds1.7B (33.99%)
- Insiders6.9M (0.14%)
- Other0 (0.00%)
Insider Transactions
- 0.14% (6.9M)Current InsiderOwnership (%, shares)
- 0Number of InsiderBuying (last 12 months)
- $0.00Amount of InsiderBuying (last 12 months)
- 9Number of InsiderSelling (last 12 months)
- $3.3BAmount of InsiderSelling (last 12 months)
Insider Name & Title | Type | Date
| Transaction Value | Shares | Share Price | Shares After Transactions |
|---|---|---|---|---|---|---|
SHAROKY MELVIN MD | Sell | Aug 17, 2026 | $637,650.00 | 5,000 | $127.53 | 0 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $0.00 | 82,280 | $0.00 | 0 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $0.00 | 76,600 | $0.00 | 0 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $0.00 | 80,970 | $0.00 | 0 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $1.1M | 82,280 | $13.67 | 181,024 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $1.3M | 76,600 | $17.16 | 257,624 |
Adsett Roger Chief Operating Officer | Exempt | Aug 10, 2026 | $2.5M | 80,970 | $30.46 | 338,594 |
Adsett Roger Chief Operating Officer | Sell | Aug 10, 2026 | $32.0M | 239,850 | $133.27 | 98,744 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Aug 06, 2026 | $0.00 | 18,278 | $0.00 | 36,555 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Aug 06, 2026 | $0.00 | 8,895 | $0.00 | 35,580 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Aug 06, 2026 | $346,368.10 | 18,278 | $18.95 | 78,764 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Aug 06, 2026 | $229,757.85 | 8,895 | $25.83 | 87,659 |
Flammer Martina M.D. Chief Medical Officer | Sell | Aug 06, 2026 | $1.1M | 8,895 | $127.00 | 78,764 |
Flammer Martina M.D. Chief Medical Officer | Sell | Aug 06, 2026 | $2.4M | 18,278 | $129.40 | 60,486 |
Lewis William Chair and CEO | Exempt | Jul 23, 2026 | $0.00 | 6,260 | $0.00 | 0 |
Lewis William Chair and CEO | Exempt | Jul 23, 2026 | $0.00 | 4,440 | $0.00 | 0 |
Lewis William Chair and CEO | Exempt | Jul 23, 2026 | $190,679.60 | 6,260 | $30.46 | 265,318 |
Lewis William Chair and CEO | Exempt | Jul 23, 2026 | $76,190.40 | 4,440 | $17.16 | 269,758 |
Lewis William Chair and CEO | Sell | Jul 23, 2026 | $509,933.36 | 4,828 | $105.62 | 264,930 |
Lewis William Chair and CEO | Sell | Jul 23, 2026 | $624,956.96 | 5,872 | $106.43 | 259,058 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Jul 06, 2026 | $0.00 | 7,945 | $0.00 | 23,835 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Jul 06, 2026 | $0.00 | 4,357 | $0.00 | 4,358 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Jul 06, 2026 | $231,437.85 | 7,945 | $29.13 | 68,431 |
Flammer Martina M.D. Chief Medical Officer | Exempt | Jul 06, 2026 | $86,007.18 | 4,357 | $19.74 | 72,788 |
Flammer Martina M.D. Chief Medical Officer | Sell | Jul 06, 2026 | $529,183.08 | 4,854 | $109.02 | 67,934 |
Flammer Martina M.D. Chief Medical Officer | Sell | Jul 06, 2026 | $823,748.80 | 7,448 | $110.60 | 60,486 |
Lewis William Chair and CEO | Exempt | Jun 25, 2026 | $0.00 | 12,518 | $0.00 | 12,519 |
Lewis William Chair and CEO | Exempt | Jun 25, 2026 | $0.00 | 8,880 | $0.00 | 8,880 |
Lewis William Chair and CEO | Exempt | Jun 25, 2026 | $381,298.28 | 12,518 | $30.46 | 271,435 |
Lewis William Chair and CEO | Exempt | Jun 25, 2026 | $152,380.80 | 8,880 | $17.16 | 280,315 |