William Lewis - 03 Feb 2026 Form 4 Insider Report for INSMED Inc (INSM)

Role
Chair and CEO, Director
Signature
/s/ William Lewis, by Michael A. Smith as Attorney-in-fact
Issuer symbol
INSM
Transactions as of
03 Feb 2026
Net transactions value
-$470,427
Form type
4
Filing time
04 Feb 2026, 16:17:23 UTC
Previous filing
22 Jan 2026
Next filing
11 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Lewis William Chair and CEO, Director 700 US HIGHWAY 202/206, BRIDGEWATER /s/ William Lewis, by Michael A. Smith as Attorney-in-fact 04 Feb 2026 0001402051

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction INSM Common Stock Sale $470,427 -3,009 -0.98% $156.34 303,882 03 Feb 2026 Direct F1
holding INSM Common Stock 233,924 03 Feb 2026 By the Katie Procter Dynasty Trust
holding INSM Common Stock 50,500 03 Feb 2026 By the William Lewis Family Legacy Trust
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

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