Insider Transactions in Q4 2025 at Insmed Inc (INSM)
Insider Transaction List (Q4 2025)
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Dec 18
2025
|
William Lewis Chair and CEO |
SELL
Open market or private sale
|
Direct |
10,699
-0.35%
|
$1,776,034
$166.84 P/Share
|
|
Dec 18
2025
|
William Lewis Chair and CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
10,699
+1.69%
|
$246,077
$23.81 P/Share
|
|
Dec 05
2025
|
Melvin Md Sharoky Director |
SELL
Open market or private sale
|
Direct |
20,000
-7.58%
|
$4,100,000
$205.01 P/Share
|
|
Dec 04
2025
|
William Lewis Chair and CEO |
SELL
Open market or private sale
|
Direct |
10,699
-0.86%
|
$2,203,994
$206.05 P/Share
|
|
Dec 04
2025
|
William Lewis Chair and CEO |
BUY
Exercise of conversion of derivative security
|
Direct |
10,699
+1.68%
|
$246,077
$23.81 P/Share
|
|
Dec 01
2025
|
Martina M.D. Flammer Chief Medical Officer |
SELL
Open market or private sale
|
Direct |
8,895
-3.31%
|
$1,832,370
$206.91 P/Share
|
|
Dec 01
2025
|
Martina M.D. Flammer Chief Medical Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
8,895
+8.82%
|
$222,375
$25.83 P/Share
|
|
Nov 24
2025
|
Elizabeth M Anderson Director |
SELL
Open market or private sale
|
Direct |
5,000
-7.85%
|
$1,020,000
$204.58 P/Share
|
|
Nov 17
2025
|
Leo Lee Director |
SELL
Open market or private sale
|
Direct |
75,000
-15.49%
|
$14,625,000
$195.48 P/Share
|
|
Nov 14
2025
|
Elizabeth M Anderson Director |
SELL
Open market or private sale
|
Direct |
10,000
-13.56%
|
$1,950,000
$195.87 P/Share
|
|
Nov 12
2025
|
Orlov S Nicole Schaeffer Chief People Strategy Officer |
SELL
Open market or private sale
|
Direct |
30,000
-12.87%
|
$5,820,000
$194.1 P/Share
|
|
Nov 12
2025
|
Orlov S Nicole Schaeffer Chief People Strategy Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
30,000
+31.1%
|
$780,000
$26.46 P/Share
|
|
Nov 11
2025
|
Martina M.D. Flammer Chief Medical Officer |
SELL
Open market or private sale
|
Direct |
31,226
-7.6%
|
$5,901,714
$189.78 P/Share
|
|
Nov 11
2025
|
Martina M.D. Flammer Chief Medical Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
31,226
+12.83%
|
$562,068
$18.01 P/Share
|
|
Nov 06
2025
|
David R Brennan Director |
BUY
Bona fide gift
|
Indirect |
60,000
+50.0%
|
-
|
|
Nov 06
2025
|
David R Brennan Director |
SELL
Bona fide gift
|
Direct |
60,000
-47.27%
|
-
|
|
Nov 03
2025
|
Michael Alexander Smith Chief Legal Officer |
SELL
Open market or private sale
|
Direct |
27,130
-4.87%
|
$4,991,920
$184.42 P/Share
|
|
Nov 03
2025
|
Michael Alexander Smith Chief Legal Officer |
BUY
Exercise of conversion of derivative security
|
Direct |
27,130
+24.85%
|
$623,990
$23.75 P/Share
|