INSMED COO Roger Adsett Sells 5,837 Shares

What Happened
Roger Adsett, Chief Operating Officer of INSMED Inc. (INSM), sold 5,837 shares on May 13, 2026 at $116.18 per share, totaling approximately $678,143. The filing lists the transaction as an open market or private sale.

Key Details

• Transaction date and price: 2026-05-13 — 5,837 shares at $116.18 each (total ~$678,143).
• Transaction type/code: Sale (S); described in filing as open market or private sale.
• Footnote: Shares were sold to satisfy tax withholding obligations upon the vesting of Restricted Stock Units (RSUs) and to cover related broker fees.
• Shares owned after transaction: Not disclosed in this Form 4.
• Filing date: Form 4 filed 2026-05-15 — appears to be filed in the normal timeframe (no late filing indicated).

Context
This sale was reported as tax-withholding related to RSU vesting, a common administrative transaction that does not necessarily signal an insider's change in view of the company. For retail investors, purchases typically carry more informational weight than routine tax-related sales.