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 24 Jul 2026
Latest close 106.92 USDstored weekly close
1-week move -1.3%latest weekly bar
13-week move +3.4%medium-term context
Relative Strength -33.3Sharemaestro indicator
Fair value gap +25.6%price vs fair value
Trend signal 0smoothed trend state

Transaction History

Latest insider filings for INSM

Showing 1-30 of 98
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 5872
Price 106.43
Value 624957
Security Common Stock
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 4828
Price 105.62
Value 509933
Security Common Stock
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 6260
Price 30.46
Value 190680
Security Common Stock
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 4440
Price 17.16
Value 76190
Security Common Stock
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 6260
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 23 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 4440
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 5005
Price 116.55
Value 583333
Security Common Stock
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 3359
Price 118.52
Value 398109
Security Common Stock
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 2335
Price 117.62
Value 274643
Security Common Stock
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 6259
Price 30.46
Value 190649
Security Common Stock
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 4440
Price 17.16
Value 76190
Security Common Stock
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 4440
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 9 Jul 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 6259
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Disposal
Shares 7448
Price 110.60
Value 823749
Security Common Stock
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Disposal
Shares 4854
Price 109.02
Value 529183
Security Common Stock
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Acquisition
Shares 7945
Price 29.13
Value 231438
Security Common Stock
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Acquisition
Shares 4357
Price 19.74
Value 86007
Security Common Stock
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Disposal
Shares 4357
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 6 Jul 2026
Insider FLAMMER, MARTINA M.D.Chief Medical Officer
Side Disposal
Shares 7945
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 12091
Price 102.34
Value 1237393
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 3723
Price 104.28
Value 388234
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 12518
Price 30.46
Value 381298
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 2456
Price 105.27
Value 258543
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 1836
Price 103.10
Value 189292
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Acquisition
Shares 8880
Price 17.16
Value 152381
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 1292
Price 106.27
Value 137301
Security Common Stock
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 8880
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 25 Jun 2026
Insider LEWIS, WILLIAMDirector, Chair and CEO
Side Disposal
Shares 12518
Price 0.00
Value 0
Security Stock Option (right to buy)
Date 23 Jun 2026
Insider BUTERA, SAMUELESVP, GM, Global Respiratory
Side Acquisition
Shares 7342
Price -
Value -
Security Common Stock
Date 23 Jun 2026
Insider BUTERA, SAMUELESVP, GM, Global Respiratory
Side Acquisition
Shares 12570
Price 0.00
Value 0
Security Stock Option (right to buy)