William Lewis, Chair and CEO at INSMED Inc (INSM), sold 3,009 shares at $156.34 ($470K) on 2026-02-03, disclosed to the SEC on 2026-02-04.
Open-market sale of $470k 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.
| Filing → |
| INSM | SELL | 2026-06-26 | $2.2M | — | Filing → |
| INSM | SELL | 2026-06-10 | $613K | — | Filing → |
| INSM | SELL | 2026-06-05 | $778K | — | Filing → |