INSMED Inc — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Lewis William | Chair and CEO | Sale | 1,783 | $166.60 | $297,048 | 309,868 | Dec 18, 2025 |
| SHAROKY MELVIN MD | — | Sale | 20,000 | $205.01 | $4,100,200 | 243,948 | Dec 5, 2025 |
| Lewis William | Chair and CEO | Sale | 2,222 | $205.66 | $456,977 | 307,872 | Dec 4, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Option Exercise | 8,895 | $25.83 | $229,758 | 92,006 | Dec 1, 2025 |
| ANDERSON ELIZABETH M | — | Sale | 5,000 | $204.58 | $1,022,900 | 58,729 | Nov 24, 2025 |
| LEE LEO | — | Sale | 3,212 | $193.51 | $621,554 | 126,465 | Nov 17, 2025 |
| ANDERSON ELIZABETH M | — | Sale | 10,000 | $195.87 | $1,958,700 | 63,729 | Nov 14, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Sale | 19,183 | $194.44 | $3,729,943 | 36,625 | Nov 12, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Sale | 10,622 | $190.33 | $2,021,685 | 86,024 | Nov 11, 2025 |
| Brennan David R | — | Gift | 60,000 | — | — | 60,000 | Nov 6, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 4,032 | $183.92 | $741,565 | 64,753 | Nov 3, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Option Exercise | 56,520 | $23.75 | $1,342,350 | 112,981 | Sep 12, 2025 |
| SHAROKY MELVIN MD | — | Sale | 10,000 | $145.39 | $1,453,900 | 262,675 | Sep 11, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Gift | 23,303 | — | — | 56,461 | Sep 4, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 1,100 | $142.06 | $156,266 | 76,720 | Sep 2, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Sale | 28,063 | $144.05 | $4,042,475 | 181,508 | Sep 2, 2025 |
| SHAROKY MELVIN MD | — | Sale | 10,000 | $129.50 | $1,295,000 | 274,516 | Aug 20, 2025 |
| Adsett Roger | Chief Operating Officer | Sale | 4,807 | $128.27 | $616,594 | 105,637 | Aug 19, 2025 |
| Lewis William | Chair and CEO | Sale | 1,416 | $129.47 | $183,330 | 233,924 | Aug 18, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Sale | 5,746 | $127.71 | $733,822 | 80,464 | Aug 14, 2025 |
| SHAROKY MELVIN MD | — | Gift | 5,000 | — | — | 6,847 | Aug 12, 2025 |
| Lewis William | Chair and CEO | Sale | 3,199 | $109.68 | $350,866 | 235,862 | Aug 4, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Sale | 8,715 | $109.50 | $954,293 | 83,111 | Aug 4, 2025 |
| Bonstein Sara | Chief Financial Officer | Sale | 26,310 | $103.03 | $2,710,719 | 73,505 | Jul 21, 2025 |
| Lewis William | Chair and CEO | Sale | 170 | $103.32 | $17,564 | 233,924 | Jul 15, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 748 | $96.41 | $72,115 | 67,327 | Jul 15, 2025 |
| Bonstein Sara | Chief Financial Officer | Option Exercise | 13,717 | $26.46 | $362,952 | 141,781 | Jul 7, 2025 |
| Lewis William | Chair and CEO | Sale | 3,666 | $97.73 | $358,278 | 237,088 | Jul 1, 2025 |
| Bonstein Sara | Chief Financial Officer | Sale | 49,104 | $101.71 | $4,994,368 | 102,197 | Jun 23, 2025 |
| Lewis William | Chair and CEO | Sale | 904 | $101.39 | $91,657 | 303,554 | Jun 16, 2025 |
| Adsett Roger | Chief Operating Officer | Sale | 6,500 | $98.50 | $640,250 | 134,823 | Jun 16, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Sale | 35,072 | $91.68 | $3,215,401 | 153,507 | Jun 11, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Option Exercise | 25,740 | $26.46 | $681,080 | 108,851 | Jun 10, 2025 |
| Bonstein Sara | Chief Financial Officer | Option Exercise | 23,740 | $17.07 | $405,242 | 161,178 | Jun 10, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 1,879 | $73.50 | $138,107 | 67,718 | Jun 5, 2025 |
| MCGIRR DAVID W J | — | Sale | 3,250 | $71.30 | $231,725 | 100,723 | Jun 4, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 1,448 | $71.50 | $103,532 | 69,597 | Jun 3, 2025 |
| Flammer Martina M.D. | Chief Medical Officer | Sale | 1,686 | $71.50 | $120,549 | 83,111 | Jun 3, 2025 |
| Adsett Roger | Chief Operating Officer | Sale | 1,860 | $71.50 | $132,990 | 141,323 | Jun 3, 2025 |
| Bonstein Sara | Chief Financial Officer | Sale | 1,579 | $71.50 | $112,899 | 113,288 | Jun 3, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Sale | 1,642 | $71.50 | $117,403 | 118,579 | Jun 3, 2025 |
| Lewis William | Chair and CEO | Sale | 5,472 | $71.50 | $391,248 | 308,758 | Jun 2, 2025 |
| Smith Michael Alexander | Chief Legal Officer | Sale | 6,327 | $68.56 | $433,779 | 91,045 | May 30, 2025 |
| SHAROKY MELVIN MD | — | Gift | 200 | — | — | 300,616 | May 27, 2025 |
| Desjardins Clarissa | — | Purchase | 1,895 | $66.87 | $126,719 | 1,895 | May 21, 2025 |
| SHAROKY MELVIN MD | — | Gift | 100 | — | — | 100 | May 20, 2025 |
| Lewis William | Chair and CEO | Sale | 2,251 | $68.13 | $153,361 | 235,640 | May 20, 2025 |
| Bonstein Sara | Chief Financial Officer | Award / Grant | 6,508 | — | — | 114,867 | May 15, 2025 |
| Adsett Roger | Chief Operating Officer | Award / Grant | 6,508 | — | — | 143,183 | May 15, 2025 |
| Schaeffer Orlov S Nicole | Chief People Strategy Officer | Award / Grant | 5,578 | — | — | 120,221 | May 15, 2025 |