INSM
insider transactionsINSMED Inc — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
Net shares · 365d
-514.6K
0 buy · 514.6K sell
Net value · 365d
-$77.5M
$0 in · $77.5M out
Sentiment · 365d
Net selling
0% buying · 100% selling
Open-market trades · 365d
110
0 buy · 514.6K sell
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Grant·A
Director
$0
5.0K sh
Own New
-
Grant·A
Director
$0
14.6K sh
Own New
-
Grant·A
Director
$0
3.6K sh
Own New
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$612.6K
6.5K sh · $94.03
Own -2%
-
Sell·S
Chief Medical Officer · 10b5-1
$192.8K
1.9K sh · $103.78
Own -3%
-
Sell·S
Chief Legal Officer
$220.8K
2.2K sh · $102.27
Own -5%
-
Sell·S
William Lewis KEY
Chair and CEO
$777.8K
7.6K sh · $102.27
Own -3%
-
Sell·S
Chief Medical Officer · 10b5-1
$262.4K
2.6K sh · $102.27
Own -4%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$245.9K
2.4K sh · $102.27
Own -3%
-
Sell·S
Chief Operating Officer
$242.4K
2.4K sh · $102.27
Own -2%
-
Sell·S
Chief Legal Officer · 10b5-1
$667.0K
6.1K sh · $108.47
Own -13%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +33%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +33%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$853.1K
8.0K sh · $106.97
Own -3%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$1.3M
11.8K sh · $106.39
Own -4%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$605.9K
5.8K sh · $105.32
Own -2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Sell·S
Chief Medical Officer · 10b5-1
$1.2M
10.5K sh · $117.54
Own -14%
-
Sell·S
Chief Legal Officer
$477.4K
4.1K sh · $116.18
Own -8%
-
Grant·A
Director
—
3.3K sh
Own +6%
-
Sell·S
William Lewis KEY
Chair and CEO
$1.5M
13.3K sh · $116.18
Own -4%
-
Grant·A
Director
—
3.3K sh
Own +5%
-
Grant·A
Director
—
3.3K sh
Own +1%
-
Sell·S
Chief Medical Officer · 10b5-1
$393.2K
3.4K sh · $116.18
Own -4%
-
Sell·S
Chief Medical Officer · 10b5-1
$504.0K
4.5K sh · $112.76
Own -5%
-
Grant·A
Director
—
3.3K sh
Own +5%
-
Grant·A
Director
—
3.3K sh
Own +5%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$961.0K
8.3K sh · $116.18
Own -10%
-
Sell·S
Chief Operating Officer
$678.1K
5.8K sh · $116.18
Own -5%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
12.9K sh
Own New
-
Sell·S
Chief Medical Officer · 10b5-1
$84.0K
830 sh · $101.18
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$1.2M
12.1K sh · $100.35
Own -13%
-
Exercise·M
Chief Medical Officer · 10b5-1
$221.0K
12.9K sh · $17.07
Own +16%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +25%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +25%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$53.2K
381 sh · $139.60
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$173.4K
1.2K sh · $139.09
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$375.1K
2.7K sh · $137.86
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$728.6K
5.3K sh · $137.01
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$81.0K
599 sh · $135.18
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$58.1K
433 sh · $134.18
Own -0%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +20%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +20%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$120.3K
825 sh · $145.79
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$326.2K
2.3K sh · $144.66
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$772.7K
5.4K sh · $143.81
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$321.2K
2.2K sh · $142.99
Own -1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +17%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +17%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$235.2K
1.4K sh · $164.01
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$1.4M
8.5K sh · $163.23
Own -3%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$127.3K
787 sh · $161.73
Own -0%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
Chief Operating Officer · 10b5-1
$0
88.1K sh
Own New
-
Sell·S
Chief Operating Officer · 10b5-1
$10.3M
62.3K sh · $164.95
Own -37%
-
Sell·S
Chief Operating Officer · 10b5-1
$3.1M
19.0K sh · $164.11
Own -10%
-
Sell·S
Chief Operating Officer · 10b5-1
$1.1M
6.7K sh · $163.18
Own -3%
-
Exercise·M
Chief Operating Officer · 10b5-1
$1.3M
88.1K sh · $14.56
Own +82%
-
Exercise·M
Chief Legal Officer · 10b5-1
$0
14.0K sh
Own +306%
-
Exercise·M
Chief Legal Officer · 10b5-1
$0
5.6K sh
Own +189%
-
Sell·S
Chief Legal Officer · 10b5-1
$3.0M
19.6K sh · $150.98
Own -27%
-
Exercise·M
Chief Legal Officer · 10b5-1
$390.2K
14.0K sh · $27.89
Own +24%
-
Exercise·M
Chief Legal Officer · 10b5-1
$96.4K
5.6K sh · $17.07
Own +11%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +14%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +14%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$653.3K
4.5K sh · $144.11
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$650.7K
4.5K sh · $143.42
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$231.6K
1.6K sh · $142.17
Own -1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +12%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +12%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$314.0K
2.1K sh · $147.54
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$571.8K
3.9K sh · $146.66
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$376.1K
2.6K sh · $145.27
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$300.4K
2.1K sh · $144.23
Own -1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Other·G
Director
$0
100 sh
Own -0%
-
Other·G
Director
$0
243 sh
Own -4%
-
Other·G
Director
$0
1.1K sh
Own -0%
-
Exercise·M
Chief Legal Officer · 10b5-1
$0
20.2K sh
Own New
-
Sell·S
Chief Legal Officer · 10b5-1
$2.5M
15.8K sh · $156.53
Own -23%
-
Sell·S
Chief Legal Officer · 10b5-1
$643.7K
4.2K sh · $155.06
Own -6%
-
Sell·S
Chief Legal Officer · 10b5-1
$746.9K
4.9K sh · $153.93
Own -6%
-
Exercise·M
Chief Legal Officer · 10b5-1
$345.6K
20.2K sh · $17.07
Own +36%
-
Other·G
Director
$0
6.0K sh
Own -9%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +11%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +11%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$158.0K
1.0K sh · $153.38
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$361.1K
2.4K sh · $151.92
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$515.8K
3.4K sh · $151.12
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$283.8K
1.9K sh · $150.10
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$296.5K
2.0K sh · $149.17
Own -1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +10%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +10%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$191.5K
1.3K sh · $148.83
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$1.1M
7.2K sh · $148.02
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$719.4K
4.9K sh · $147.17
Own -2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Other·G
Director
$0
53.4K sh
Own -55%
-
Sell·S
Chief Medical Officer · 10b5-1
$132.5K
869 sh · $152.44
Own -1%
-
Sell·S
Chief Legal Officer
$100.0K
640 sh · $156.27
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO
$470.4K
3.0K sh · $156.34
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$123.8K
795 sh · $155.77
Own -1%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$116.9K
748 sh · $156.34
Own -1%
-
Sell·S
Chief Operating Officer
$123.5K
791 sh · $156.17
Own -1%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
8.0K sh
Own +50%
-
Sell·S
Chief Medical Officer · 10b5-1
$15.7K
100 sh · $156.86
Own -0%
-
Sell·S
Chief Medical Officer · 10b5-1
$472.9K
3.0K sh · $155.46
Own -3%
-
Sell·S
Chief Medical Officer · 10b5-1
$517.6K
3.3K sh · $154.56
Own -4%
-
Sell·S
Chief Medical Officer · 10b5-1
$142.1K
928 sh · $153.16
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$85.6K
563 sh · $152.06
Own -1%
-
Exercise·M
Chief Medical Officer · 10b5-1
$524.6K
8.0K sh · $65.72
Own +9%
-
Grant·A
Director
$0
50.0K sh
Own New
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +9%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +9%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$40.8K
254 sh · $160.70
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$356.3K
2.2K sh · $159.85
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$948.7K
6.0K sh · $158.99
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$196.9K
1.2K sh · $158.37
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$157.7K
1.0K sh · $156.80
Own -0%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
4.4K sh
Own +8%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$0
6.3K sh
Own +8%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$55.1K
315 sh · $174.86
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$51.2K
297 sh · $172.36
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$50.9K
297 sh · $171.31
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$27.2K
160 sh · $170.24
Own -0%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$1.2M
7.0K sh · $169.57
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$1.2M
7.2K sh · $168.63
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO · 10b5-1
$666.6K
4.0K sh · $167.73
Own -1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$76.2K
4.4K sh · $17.16
Own +1%
-
Exercise·M
William Lewis KEY
Chair and CEO · 10b5-1
$190.6K
6.3K sh · $30.46
Own +2%
-
Sell·S
Chief Medical Officer · 10b5-1
$351.3K
1.9K sh · $186.19
Own -2%
-
Sell·S
Chief Legal Officer
$183.4K
1.1K sh · $174.17
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO
$561.3K
3.2K sh · $174.17
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$566.2K
3.3K sh · $174.17
Own -4%
-
Sell·S
Chief Medical Officer · 10b5-1
$288.6K
1.7K sh · $173.87
Own -2%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$252.0K
1.4K sh · $174.17
Own -2%
-
Sell·S
Chief Operating Officer
$358.6K
2.1K sh · $174.17
Own -2%
-
Sell·S
Chief Legal Officer
$124.1K
709 sh · $175.07
Own -1%
-
Sell·S
William Lewis KEY
Chair and CEO
$412.6K
2.4K sh · $175.07
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$252.2K
1.4K sh · $175.84
Own -2%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$293.8K
1.7K sh · $175.07
Own -2%
-
Sell·S
Chief Operating Officer
$140.4K
802 sh · $175.07
Own -1%
-
Sell·S
Chief Legal Officer
$242.0K
1.4K sh · $173.33
Own -2%
-
Sell·S
William Lewis KEY
Chair and CEO
$710.0K
4.1K sh · $173.33
Own -1%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
8.6K sh
Own New
-
Sell·S
Chief Medical Officer · 10b5-1
$279.9K
1.6K sh · $173.33
Own -2%
-
Sell·S
Chief Medical Officer · 10b5-1
$167.5K
957 sh · $175.01
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$493.0K
2.8K sh · $174.21
Own -3%
-
Sell·S
Chief Medical Officer · 10b5-1
$829.7K
4.8K sh · $173.47
Own -5%
-
Exercise·M
Chief Medical Officer · 10b5-1
$226.5K
8.6K sh · $26.43
Own +9%
-
Sell·S
Sara Bonstein KEY
Chief Financial Officer
$262.9K
1.5K sh · $173.33
Own -2%
-
Sell·S
Chief Operating Officer
$247.7K
1.4K sh · $173.33
Own -1%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
7.9K sh
Own +33%
-
Exercise·M
Chief Medical Officer · 10b5-1
$0
4.4K sh
Own +100%
-
Sell·S
Chief Medical Officer · 10b5-1
$123.4K
702 sh · $175.73
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$114.2K
655 sh · $174.28
Own -1%
-
Sell·S
Chief Medical Officer · 10b5-1
$315.7K
1.8K sh · $173.45
Own -2%
-
Sell·S
Chief Medical Officer · 10b5-1
$49.2K
286 sh · $171.92
Own -0%
-
Sell·S
Chief Medical Officer · 10b5-1
$485.5K
2.8K sh · $171.19
Own -3%
-
Sell·S
Chief Medical Officer · 10b5-1
$546.8K
3.2K sh · $170.61
Own -3%
-
Sell·S
Chief Medical Officer · 10b5-1
$473.8K
2.8K sh · $169.29
Own -3%
-
Exercise·M
Chief Medical Officer · 10b5-1
$231.4K
7.9K sh · $29.13
Own +8%
-
Exercise·M
Chief Medical Officer · 10b5-1
$86.0K
4.4K sh · $19.74
Own +5%
-
Grant·A
Chief Legal Officer
$0
27.6K sh
Own New
-
Grant·A
Chief Legal Officer
—
5.3K sh
Own +10%
-
Grant·A
William Lewis KEY
Chair and CEO
$0
110.4K sh
Own New
-
Grant·A
William Lewis KEY
Chair and CEO
—
21.2K sh
Own +7%
-
Exercise·M
Chief People Strategy Officer · 10b5-1
$0
87.3K sh
Own New
-
Grant·A
Chief People Strategy Officer · 10b5-1
$0
27.6K sh
Own New
-
Sell·S
Chief People Strategy Officer · 10b5-1
$35.6K
200 sh · $177.78
Own -0%
-
Sell·S
Chief People Strategy Officer · 10b5-1
$1.6M
9.1K sh · $177.17
Own -18%
-
Sell·S
Chief People Strategy Officer · 10b5-1
$2.3M
12.8K sh · $176.08
Own -20%
-
Sell·S
Chief People Strategy Officer · 10b5-1
$6.0M
34.1K sh · $175.17
Own -35%
-
Sell·S
Chief People Strategy Officer · 10b5-1
$5.4M
31.0K sh · $174.28
Own -24%
-
Exercise·M
Chief People Strategy Officer · 10b5-1
$1.2M
87.3K sh · $13.91
Own +209%
-
Grant·A
Chief People Strategy Officer · 10b5-1
—
5.3K sh
Own +15%
-
Grant·A
Chief Medical Officer · 10b5-1
$0
31.3K sh
Own New
-
Grant·A
Chief Medical Officer · 10b5-1
—
5.6K sh
Own +6%
-
Grant·A
Chief Medical Officer · 10b5-1
—
6.0K sh
Own +7%
-
Grant·A
Sara Bonstein KEY
Chief Financial Officer
$0
31.3K sh
Own New
-
Grant·A
Sara Bonstein KEY
Chief Financial Officer
—
5.6K sh
Own +7%
-
Grant·A
Sara Bonstein KEY
Chief Financial Officer
—
6.0K sh
Own +8%
-
Grant·A
Chief Operating Officer
$0
31.3K sh
Own New
-
Grant·A
Chief Operating Officer
—
6.0K sh
Own +6%
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 11, 2026 | Sara Bonstein | Grant A | 5.0K | $0 |
| Jun 11, 2026 | Roger Adsett | Grant A | 14.6K | $0 |
| Jun 11, 2026 | Roger Adsett | Grant A | 3.6K | $0 |
| Jun 8, 2026 | William Lewis KEY 10b5-1 | Sell S | 6.5K | $612.6K |
| Jun 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.9K | $192.8K |
| Jun 3, 2026 | Michael Alexander Smith | Sell S | 2.2K | $220.8K |
| Jun 3, 2026 | William Lewis KEY | Sell S | 7.6K | $777.8K |
| Jun 3, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 2.6K | $262.4K |
| Jun 3, 2026 | Sara Bonstein KEY | Sell S | 2.4K | $245.9K |
| Jun 3, 2026 | Roger Adsett | Sell S | 2.4K | $242.4K |
| May 22, 2026 | Michael Alexander Smith 10b5-1 | Sell S | 6.1K | $667.0K |
| May 18, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| May 18, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| May 18, 2026 | William Lewis KEY 10b5-1 | Sell S | 8.0K | $853.1K |
| May 18, 2026 | William Lewis KEY 10b5-1 | Sell S | 11.8K | $1.3M |
| May 18, 2026 | William Lewis KEY 10b5-1 | Sell S | 5.8K | $605.9K |
| May 18, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| May 18, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| May 14, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 10.5K | $1.2M |
| May 13, 2026 | Michael Alexander Smith | Sell S | 4.1K | $477.4K |
| May 13, 2026 | Leo Lee | Grant A | 3.3K | — |
| May 13, 2026 | William Lewis KEY | Sell S | 13.3K | $1.5M |
| May 13, 2026 | Carol Schafer | Grant A | 3.3K | — |
| May 13, 2026 | Melvin Sharoky MD | Grant A | 3.3K | — |
| May 13, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 3.4K | $393.2K |
| May 13, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 4.5K | $504.0K |
| May 13, 2026 | Clarissa Desjardins | Grant A | 3.3K | — |
| May 13, 2026 | David R Brennan | Grant A | 3.3K | — |
| May 13, 2026 | Sara Bonstein KEY | Sell S | 8.3K | $961.0K |
| May 13, 2026 | Roger Adsett | Sell S | 5.8K | $678.1K |
| May 11, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 12.9K | $0 |
| May 11, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 830 | $84.0K |
| May 11, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 12.1K | $1.2M |
| May 11, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 12.9K | $221.0K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| May 4, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 381 | $53.2K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.2K | $173.4K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.7K | $375.1K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 5.3K | $728.6K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 599 | $81.0K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Sell S | 433 | $58.1K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| May 4, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Sell S | 825 | $120.3K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.3K | $326.2K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Sell S | 5.4K | $772.7K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.2K | $321.2K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Apr 16, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.4K | $235.2K |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Sell S | 8.5K | $1.4M |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Sell S | 787 | $127.3K |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Apr 6, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Apr 1, 2026 | Roger Adsett 10b5-1 | Exercise M | 88.1K | $0 |
| Apr 1, 2026 | Roger Adsett 10b5-1 | Sell S | 62.3K | $10.3M |
| Apr 1, 2026 | Roger Adsett 10b5-1 | Sell S | 19.0K | $3.1M |
| Apr 1, 2026 | Roger Adsett 10b5-1 | Sell S | 6.7K | $1.1M |
| Apr 1, 2026 | Roger Adsett 10b5-1 | Exercise M | 88.1K | $1.3M |
| Mar 30, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 14.0K | $0 |
| Mar 30, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 5.6K | $0 |
| Mar 30, 2026 | Michael Alexander Smith 10b5-1 | Sell S | 19.6K | $3.0M |
| Mar 30, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 14.0K | $390.2K |
| Mar 30, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 5.6K | $96.4K |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 4.5K | $653.3K |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 4.5K | $650.7K |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.6K | $231.6K |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Mar 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.1K | $314.0K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Sell S | 3.9K | $571.8K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.6K | $376.1K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.1K | $300.4K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Mar 5, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Mar 3, 2026 | Melvin Sharoky MD | Other G | 100 | $0 |
| Feb 25, 2026 | Melvin Sharoky MD | Other G | 243 | $0 |
| Feb 25, 2026 | Melvin Sharoky MD | Other G | 1.1K | $0 |
| Feb 24, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 20.2K | $0 |
| Feb 24, 2026 | Michael Alexander Smith 10b5-1 | Sell S | 15.8K | $2.5M |
| Feb 24, 2026 | Michael Alexander Smith 10b5-1 | Sell S | 4.2K | $643.7K |
| Feb 24, 2026 | Michael Alexander Smith 10b5-1 | Sell S | 4.9K | $746.9K |
| Feb 24, 2026 | Michael Alexander Smith 10b5-1 | Exercise M | 20.2K | $345.6K |
| Feb 23, 2026 | David R Brennan | Other G | 6.0K | $0 |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.0K | $158.0K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.4K | $361.1K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 3.4K | $515.8K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.9K | $283.8K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.0K | $296.5K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Feb 19, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.3K | $191.5K |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Sell S | 7.2K | $1.1M |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Sell S | 4.9K | $719.4K |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Feb 9, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Feb 9, 2026 | David W J Mcgirr | Other G | 53.4K | $0 |
| Feb 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 869 | $132.5K |
| Feb 3, 2026 | Michael Alexander Smith | Sell S | 640 | $100.0K |
| Feb 3, 2026 | William Lewis KEY | Sell S | 3.0K | $470.4K |
| Feb 3, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 795 | $123.8K |
| Feb 3, 2026 | Sara Bonstein KEY | Sell S | 748 | $116.9K |
| Feb 3, 2026 | Roger Adsett | Sell S | 791 | $123.5K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 8.0K | $0 |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 100 | $15.7K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 3.0K | $472.9K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 3.3K | $517.6K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 928 | $142.1K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 563 | $85.6K |
| Feb 2, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 8.0K | $524.6K |
| Jan 29, 2026 | Roger Adsett | Grant A | 50.0K | $0 |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Sell S | 254 | $40.8K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Sell S | 2.2K | $356.3K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Sell S | 6.0K | $948.7K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.2K | $196.9K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Sell S | 1.0K | $157.7K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Jan 20, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $0 |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $0 |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 315 | $55.1K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 297 | $51.2K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 297 | $50.9K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 160 | $27.2K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 7.0K | $1.2M |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 7.2K | $1.2M |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Sell S | 4.0K | $666.6K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Exercise M | 4.4K | $76.2K |
| Jan 12, 2026 | William Lewis KEY 10b5-1 | Exercise M | 6.3K | $190.6K |
| Jan 9, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.9K | $351.3K |
| Jan 8, 2026 | Michael Alexander Smith | Sell S | 1.1K | $183.4K |
| Jan 8, 2026 | William Lewis KEY | Sell S | 3.2K | $561.3K |
| Jan 8, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 3.3K | $566.2K |
| Jan 8, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.7K | $288.6K |
| Jan 8, 2026 | Sara Bonstein KEY | Sell S | 1.4K | $252.0K |
| Jan 8, 2026 | Roger Adsett | Sell S | 2.1K | $358.6K |
| Jan 7, 2026 | Michael Alexander Smith | Sell S | 709 | $124.1K |
| Jan 7, 2026 | William Lewis KEY | Sell S | 2.4K | $412.6K |
| Jan 7, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.4K | $252.2K |
| Jan 7, 2026 | Sara Bonstein KEY | Sell S | 1.7K | $293.8K |
| Jan 7, 2026 | Roger Adsett | Sell S | 802 | $140.4K |
| Jan 6, 2026 | Michael Alexander Smith | Sell S | 1.4K | $242.0K |
| Jan 6, 2026 | William Lewis KEY | Sell S | 4.1K | $710.0K |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 8.6K | $0 |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.6K | $279.9K |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 957 | $167.5K |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 2.8K | $493.0K |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 4.8K | $829.7K |
| Jan 6, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 8.6K | $226.5K |
| Jan 6, 2026 | Sara Bonstein KEY | Sell S | 1.5K | $262.9K |
| Jan 6, 2026 | Roger Adsett | Sell S | 1.4K | $247.7K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 7.9K | $0 |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 4.4K | $0 |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 702 | $123.4K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 655 | $114.2K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 1.8K | $315.7K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 286 | $49.2K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 2.8K | $485.5K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 3.2K | $546.8K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Sell S | 2.8K | $473.8K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 7.9K | $231.4K |
| Jan 5, 2026 | Martina Flammer M.D. 10b5-1 | Exercise M | 4.4K | $86.0K |
| Jan 2, 2026 | Michael Alexander Smith | Grant A | 27.6K | $0 |
| Jan 2, 2026 | Michael Alexander Smith | Grant A | 5.3K | — |
| Jan 2, 2026 | William Lewis KEY | Grant A | 110.4K | $0 |
| Jan 2, 2026 | William Lewis KEY | Grant A | 21.2K | — |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Exercise M | 87.3K | $0 |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Grant A | 27.6K | $0 |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Sell S | 200 | $35.6K |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Sell S | 9.1K | $1.6M |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Sell S | 12.8K | $2.3M |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Sell S | 34.1K | $6.0M |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Sell S | 31.0K | $5.4M |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Exercise M | 87.3K | $1.2M |
| Jan 2, 2026 | Orlov S Nicole Schaeffer 10b5-1 | Grant A | 5.3K | — |
| Jan 2, 2026 | Martina Flammer M.D. 10b5-1 | Grant A | 31.3K | $0 |
| Jan 2, 2026 | Martina Flammer M.D. 10b5-1 | Grant A | 5.6K | — |
| Jan 2, 2026 | Martina Flammer M.D. 10b5-1 | Grant A | 6.0K | — |
| Jan 2, 2026 | Sara Bonstein KEY | Grant A | 31.3K | $0 |
| Jan 2, 2026 | Sara Bonstein KEY | Grant A | 5.6K | — |
| Jan 2, 2026 | Sara Bonstein KEY | Grant A | 6.0K | — |
| Jan 2, 2026 | Roger Adsett | Grant A | 31.3K | $0 |
| Jan 2, 2026 | Roger Adsett | Grant A | 6.0K | — |
About INSM insider trading
This page tracks insider transactions for INSMED Inc (INSM) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.