INSM
Insmed Incorporated
NASDAQ · Healthcare · Biotechnology · US
$126.29
−0.31%0
Insider buys (3m)
18
Insider sells (3m)
-$42.8M
Net value (3m)
+34.3%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Aug 19, 2026 | SHAROKY MELVIN MD · director | Sale | 5,000 | $128 |
| Aug 12, 2026 | Adsett Roger · officer: Chief Operating Officer | M-Exempt | 76,600 | $17 |
| Aug 12, 2026 | Adsett Roger · officer: Chief Operating Officer | M-Exempt | 82,280 | $14 |
| Aug 12, 2026 | Adsett Roger · officer: Chief Operating Officer | Sale | 239,850 | $133 |
| Aug 12, 2026 | Adsett Roger · officer: Chief Operating Officer | M-Exempt | 80,970 | $30 |
| Aug 7, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | Sale | 8,895 | $127 |
| Aug 7, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | Sale | 18,278 | $129 |
| Aug 7, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | M-Exempt | 8,895 | $26 |
| Aug 7, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | M-Exempt | 18,278 | $19 |
| Jul 24, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 4,828 | $106 |
| Jul 24, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 6,260 | $30 |
| Jul 24, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 4,440 | $17 |
| Jul 24, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 5,872 | $106 |
| Jul 10, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 2,335 | $118 |
| Jul 10, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 3,359 | $119 |
| Jul 10, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 4,440 | $17 |
| Jul 10, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 5,005 | $117 |
| Jul 10, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 6,259 | $30 |
| Jul 8, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | M-Exempt | 7,945 | $29 |
| Jul 8, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | Sale | 4,854 | $109 |
| Jul 8, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | M-Exempt | 4,357 | $20 |
| Jul 8, 2026 | Flammer Martina M.D. · officer: Chief Medical Officer | Sale | 7,448 | $111 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 12,518 | $30 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 12,091 | $102 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 1,292 | $106 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 2,456 | $105 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 3,723 | $104 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | Sale | 1,836 | $103 |
| Jun 26, 2026 | Lewis William · director, officer: Chair and CEO | M-Exempt | 8,880 | $17 |
| Jun 24, 2026 | Butera Samuele · officer: SVP, GM, Global Respiratory | A-Award | 7,342 | $0.00 |
Institutional positioning
13F filings over the trailing two quarters
New 215Increased 545Reduced 452Sold out 120
| Filer | Action | Shares | Filed |
|---|---|---|---|
| JPMORGAN CHASE & CO | Increased | 24,150,499 | May 13, 2026 |
| DARWIN GLOBAL MANAGEMENT, LTD. | Reduced | 16,805,184 | May 15, 2026 |
| BLACKROCK, INC. | Increased | 16,678,146 | May 13, 2026 |
| FMR LLC | Increased | 16,143,583 | Aug 13, 2026 |
| BlackRock, Inc. | Reduced | 15,807,984 | Aug 7, 2026 |
| FMR LLC | Increased | 13,160,167 | May 15, 2026 |
| JPMORGAN CHASE & CO | Reduced | 10,428,170 | Aug 12, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 10,407,962 | Aug 13, 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | New Position | 10,371,802 | May 8, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 9,790,865 | Aug 13, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 9,642,131 | May 15, 2026 |
| BAKER BROS. ADVISORS LP | Increased | 8,796,111 | Aug 14, 2026 |
| Capital International Investors | Increased | 8,238,124 | Aug 12, 2026 |
| BAKER BROS. ADVISORS LP | Increased | 7,421,111 | May 15, 2026 |
| ARTISAN PARTNERS LIMITED PARTNERSHIP | Increased | 6,527,301 | May 13, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Aug 19, 2026