Company Insider Tape

Insmed Inc insider transactions

Executive and director filing history, acquisition and disposal balance, executive concentration, cadence, and stored market context.

Symbol INSM Latest filing 23 Jul 2026

Company Read

Net disposal

INSM has 98 stored insider filings. Acquisitions account for 28.6% of classified filings and disposals account for 71.4%. The largest stored filing is $10.3M from ADSETT, ROGER.

Latest filing 23 Jul 2026most recent stored row
Largest filing $10.3Mreported transaction value
Total filings 98stored transaction rows
Acquisition value $4.4M28 acquisitions
Disposal value $41.4M70 disposals
Net value $-36.9Macquisitions minus disposals

Filing cadence

Last 12 active months
Mar 2026 5
Apr 2026 20
May 2026 35
Jun 2026 19
Jul 2026 19

Acquisitions 28.6% · Disposals 71.4%

Mar 2026 $3.5M
Apr 2026 $19.6M
May 2026 $12.7M
Jun 2026 $5.5M
Jul 2026 $4.6M

Executive concentration

By filing count
LEWIS, WILLIAM Director, Chair and CEO · 57 filings
FLAMMER, MARTINA M.D. Chief Medical Officer · 15 filings
SMITH, MICHAEL ALEXANDER Chief Legal Officer · 9 filings
ADSETT, ROGER Chief Operating Officer · 7 filings
BONSTEIN, SARA Chief Financial Officer · 2 filings
BUTERA, SAMUELE SVP, GM, Global Respiratory · 2 filings
ANDERSON, ELIZABETH M Director · 1 filings
SCHAFER, CAROL Director · 1 filings

Market Context

INSM weekly market snapshot

Week 31 Jul 2026
Latest close 98.60 USDstored weekly close
1-week move -7.8%latest weekly bar
13-week move -11.6%medium-term context
Relative Strength -38.5Sharemaestro indicator
Fair value gap +15.2%price vs fair value
Trend signal 0smoothed trend state

Transaction History

Latest insider filings for INSM

Showing 91-98 of 98
Date 1 Apr 2026
Insider ADSETT, ROGERChief Operating Officer
Side Acquisition
Shares 88060
Price 14.56
Value 1282154
Security Common Stock
Date 1 Apr 2026
Insider ADSETT, ROGERChief Operating Officer
Side Disposal
Shares 6715
Price 163.18
Value 1095754
Security Common Stock
Date 1 Apr 2026
Insider ADSETT, ROGERChief Operating Officer
Side Disposal
Shares 88060
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 30 Mar 2026
Insider SMITH, MICHAEL ALEXANDERChief Legal Officer
Side Disposal
Shares 19638
Price 150.98
Value 2964945
Security Common Stock
Date 30 Mar 2026
Insider SMITH, MICHAEL ALEXANDERChief Legal Officer
Side Acquisition
Shares 13989
Price 27.89
Value 390153
Security Common Stock
Date 30 Mar 2026
Insider SMITH, MICHAEL ALEXANDERChief Legal Officer
Side Acquisition
Shares 5649
Price 17.07
Value 96428
Security Common Stock
Date 30 Mar 2026
Insider SMITH, MICHAEL ALEXANDERChief Legal Officer
Side Disposal
Shares 5649
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 30 Mar 2026
Insider SMITH, MICHAEL ALEXANDERChief Legal Officer
Side Disposal
Shares 13989
Price 0.00
Value 0
Security Stock Option (right to buy)