William Lewis, Chair and CEO at INSMED Inc (INSM), sold 21,398 shares at $206.49 ($4.4M) on 2025-12-04, disclosed to the SEC on 2025-12-05.
Scheduled sale ($4.4M) by Chair and CEO under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $204.62 | 4,516 | $924K | 21.0% |
| 2 | $204.62 | 4,516 | $924K | 21.0% |
| 3 | $205.66 | 2,222 | $457K | 10.4% |
| 4 | $205.66 | 2,222 | $457K | 10.4% |
| 5 | $206.49 | 2,921 | $603K | 13.7% |
| 6 | $206.49 | 2,921 |
| $603K |
| 13.7% |
| 7 | $207.42 | 1,040 | $216K | 4.9% |
| 8 | $207.42 | 1,040 | $216K | 4.9% |
| Total | $205.62 avg | 21,398 | $4.4M | 100% |
| Filing → |
| INSM | SELL | 2026-06-26 | $2.2M | — | Filing → |
| INSM | SELL | 2026-06-10 | $613K | — | Filing → |
| INSM | SELL | 2026-06-05 | $778K | — | Filing → |