Insider Sale: Director at INSM sold 25,000 Shares

Brennan David R, a Director at Insmed (NASDAQ: INSM), sold 25,000 shares of the company on Sep 09, 2026 for an estimated $3,100,000. This was a sale of approximately 38.9% of their shares of this class of stock. Following this trade, they now own 39,238 shares of this class of INSM stock.

Insmed Insider Trading Activity

Insmed insiders have traded INSM stock on the open market 58 times in the past 6 months. Of those trades, 0 have been purchases and 58 have been sales.

Here’s a breakdown of recent trading of INSM stock by insiders over the last 6 months:

• Adsett Roger (Chief Operating Officer) has made 0 purchases and 6 sales selling 336,117 shares for an estimated $47,382,983.
• Lewis William (Chair and CEO) has made 0 purchases and 32 sales selling 138,560 shares for an estimated $16,545,200.
• Flammer Martina M.D. (Chief Medical Officer) has made 0 purchases and 11 sales selling 75,181 shares for an estimated $8,732,031.
• Smith Michael Alexander (Chief Legal Officer) has made 0 purchases and 5 sales selling 33,861 shares for an estimated $4,503,163.
• Brennan David R sold 25,000 shares for an estimated $3,100,000.
• Bonstein Sara (Chief Financial Officer) has made 0 purchases and 2 sales selling 10,676 shares for an estimated $1,206,898.
• SHAROKY MELVIN MD sold 5,000 shares for an estimated $637,650.

Insmed Revenue

Insmed had revenues of $731.5M in H1 2026. This represents a 265.29% increase from the same period last year.