Insmed, Inc. (INSM) Ownership & Trading Activity

Institutional holders, insider transactions, and congressional trades for INSM. 13F holdings as of 2026-06-30.

Top Institutional Holders

InstitutionSharesValueChange
Gateway Investment Advisers365,000$39MUNCHANGED
Assenagon Asset Management218,270$23MINCREASED
Handelsbanken Fonder AB189,581$20MINCREASED
Swedbank AB129,518$14MINCREASED
Y-Intercept (Hong Kong)101,908$11MNEW

Recent Insider Trades

InsiderTypeSharesValueDate
William Lewis (Chair and CEO)EXERCISE4,440$76K2026-07-23
William Lewis (Chair and CEO)EXERCISE6,260$191K2026-07-23
William Lewis (Chair and CEO)SELL5,872$625K2026-07-23
William Lewis (Chair and CEO)SELL4,828$510K2026-07-23
William Lewis (Chair and CEO)EXERCISE4,440$76K2026-07-09

Recent Congressional Trades

MemberTypeAmountDate
Josh Gottheimer (Democrat)SALE$1,001 - $15,0002026-06-10

Full institutional holdings, insider history, and congressional trades for Insmed, Inc. on SentiSense.