Insider Trading Disclosure - Michael Smith

Michael Smith, Chief Legal Officer of INSMED Inc., reported a sale of 1806 shares of common stock on June 22, 2026, at a price of $95.82 per share. This transaction was executed as part of a pre-arranged 10b5-1 trading plan adopted on November 7, 2025. Following the sale, Smith directly owns 37,648 shares of INSMED Inc. common stock. The filing, marked as Form 4, indicates a disposition of securities by an insider.