14 insiders reported 446 Form 4 transactions for INSMED Inc (INSM) over the past 18 months (most recent 2026-08-19). Recent activity: SHAROKY MELVIN MD (Director) Sell 5,000 shares, Adsett Roger (Chief Operating Officer) Buy 82,280 shares, Adsett Roger (Chief Operating Officer) Buy 76,600 shares, Adsett Roger (Chief Operating Officer) Buy 80,970 shares, Adsett Roger (Chief Operating Officer) Sell 239,850 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-19 | SHAROKY MELVIN MD | Director | Sell | 5,000 | $637,650 |
| 2026-08-12 | Adsett Roger | Chief Operating Officer | Buy | 82,280 | $1.1M |
| 2026-08-12 | Adsett Roger | Chief Operating Officer | Buy | 76,600 | $1.3M |
| 2026-08-12 | Adsett Roger | Chief Operating Officer | Buy | 80,970 | $2.5M |
| 2026-08-12 | Adsett Roger | Chief Operating Officer | Sell | 239,850 | $32.0M |
| 2026-08-07 | Flammer Martina M.D. | Chief Medical Officer | Buy | 18,278 | $346,368 |
| 2026-08-07 | Flammer Martina M.D. | Chief Medical Officer | Buy | 8,895 | $229,758 |
| 2026-08-07 | Flammer Martina M.D. | Chief Medical Officer | Sell | 8,895 | $1.1M |
| 2026-08-07 | Flammer Martina M.D. | Chief Medical Officer | Sell | 18,278 | $2.4M |
| 2026-07-24 | Lewis William | Chair and CEO | Sell | 5,872 | $624,957 |
| 2026-07-24 | Lewis William | Chair and CEO | Buy | 4,440 | $76,190 |
| 2026-07-24 | Lewis William | Chair and CEO | Sell | 4,828 | $509,933 |
| 2026-07-24 | Lewis William | Chair and CEO | Buy | 6,260 | $190,680 |
| 2026-07-10 | Lewis William | Chair and CEO | Buy | 6,259 | $190,649 |
| 2026-07-10 | Lewis William | Chair and CEO | Buy | 4,440 | $76,190 |
| 2026-07-10 | Lewis William | Chair and CEO | Sell | 5,005 | $583,333 |
| 2026-07-10 | Lewis William | Chair and CEO | Sell | 2,335 | $274,643 |
| 2026-07-10 | Lewis William | Chair and CEO | Sell | 3,359 | $398,109 |
| 2026-07-08 | Flammer Martina M.D. | Chief Medical Officer | Buy | 7,945 | $231,438 |
| 2026-07-08 | Flammer Martina M.D. | Chief Medical Officer | Buy | 4,357 | $86,007 |
| 2026-07-08 | Flammer Martina M.D. | Chief Medical Officer | Sell | 4,854 | $529,183 |
| 2026-07-08 | Flammer Martina M.D. | Chief Medical Officer | Sell | 7,448 | $823,749 |
| 2026-06-26 | Lewis William | Chair and CEO | Buy | 12,518 | $381,298 |
| 2026-06-26 | Lewis William | Chair and CEO | Buy | 8,880 | $152,381 |
| 2026-06-26 | Lewis William | Chair and CEO | Sell | 12,091 | $1.2M |
Source: SEC Form 4 filings · as of 2026-08-19