MarketPeel
Insider Trading Intelligence
Pricing
…
Chair and CEO
Lewis William
Thu, Mar 19, 2026
Mar 19
sold
$653.25k
of
INSM
4,533
shares @ $144.11
Decreased holdings by
-1.50%
62nd largest trade (out of 444)
Trade made by an officer
10b5-1 scheduled trade
51% win rate · +1.4% median edge vs SPY (185 trades, 90-day)
INSM
INSMED Inc
Healthcare
Biotechnology
1D
0.00%
1W
+7.95%
1M
+6.37%
3M
—
6M
—
1Y
—
Recent insider activity at INSM
Jun 25
Lewis William
Sold
$189.29k
Jun 25
Lewis William
Sold
$388.23k
Jun 25
Lewis William
Sold
$258.54k
Jun 25
Lewis William
Sold
$137.30k
Jun 25
Lewis William
Sold
$1.24m
Jun 22
Smith Michael Alexander
Sold
$173.05k
Jun 8
Lewis William
Sold
$612.61k
Jun 5
Flammer Martina M.D.
Sold
$192.82k
Full INSM profile →
Lewis William’s trading history →
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