144 0001402051 XXXXXXXX LIVE 0001104506 INSMED Inc 000-30739 700 US HIGHWAY 202/206 BRIDGEWATER NJ 08807 908-977-9900 Lewis William Officer Common Merrill Lynch

1800 K St NW Suite 800 Washington DC 20006

25580 1787524.00 178902721 12/19/2024 NASDAQ Common 12/19/2024 Stock Plan Activity Issuer N 25580 12/19/2024 n/a N William Lewis

700 US Highway 202/206 Bridgewater NJ 08807

Common 12/12/2024 18750 1367618.00 William H Lewis TTEE

700 US Highway 202/206 Bridgewater NJ 08807

Common 12/12/2024 6830 498253.00 12/19/2024 09/12/2024 William Lewis