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Market Pulse
Insider Activity
Rare Buys
Institutional Holdings
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About
Daily Briefing
Market Pulse
Insider Activity
Rare Buys
Institutional Holdings
Sentiment
AI Capex Stress
About
← Companies
Graph
Table
INSM
INSMED Inc
SEC EDGAR ↗
Insider Activity Table
Total Insiders
12
Total Shares Held
1.4M
Latest Quarter Net
+0
Insider positions and quarterly net share changes
Insider · 12 positions
Net Shares per Quarter (+ Bought / − Sold)
Name
Role
Shares Held ↑
Q3 2026
Q2 2026
Q1 2026
Q4 2025
Q3 2025
Q2 2025
Q1 2025
Q4 2024
Q3 2024
Q2 2024
Q1 2024
Q4 2023
Q3 2023
Q2 2023
Q1 2023
Q4 2022
Samuele Butera
SVP, GM, Global Respiratory
13K
—
+20K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Michael Alexander Smith
Chief Legal Officer
38K
—
-14K
-20K
—
—
—
—
—
—
—
—
—
—
—
—
—
Leo Lee
58K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Elizabeth M Anderson
62K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
David R Brennan
64K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Carol Schafer
67K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Sara Bonstein
Chief Financial Officer
69K
—
-11K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Clarissa Desjardins
70K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Martina Flammer M.D.
Chief Medical Officer
88K
-39K
-36K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Melvin Sharoky MD
—
246K
—
+3K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
William Lewis
Chair and CEO
270K
-21K
-106K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Roger Adsett
Chief Operating Officer
339K
-240K
-96K
—
—
—
—
—
—
—
—
—
—
—
—
—
—
12 insiders · 16 quarters shown