William Lewis, Chair and CEO at INSMED Inc (INSM), sold 10,699 shares at $144.23 ($1.6M) on 2026-03-05, disclosed to the SEC on 2026-03-05.
Open-market sale of $1.6M INSM by Chair and CEO. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $144.23 | 2,083 | $300K | 19.2% |
| 2 | $145.27 | 2,589 | $376K | 24.1% |
| 3 | $146.66 | 3,899 | $572K | 36.6% |
| 4 | $147.54 | 2,128 | $314K | 20.1% |
| Total | $146.03 avg | 10,699 | $1.6M | 100% |
| Filing → |
| INSM | SELL | 2026-06-26 | $2.2M | — | Filing → |
| INSM | SELL | 2026-06-10 | $613K | — | Filing → |
| INSM | SELL | 2026-06-05 | $778K | — | Filing → |