INSMED Inc — Director's Dealing 2026

Feb 4, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2026-02-03

Reporting Person: Lewis William (Director, Chair and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-03	Common Stock	S	3009	$156.34	Disposed	303882	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	233924	Indirect
Common Stock	50500	Indirect

Footnotes

F1: Shares sold to satisfy tax withholding obligations upon the vesting of Restricted Stock Units and to cover related broker fees.