Insider trading

Period: 120 months Stock: INSM + Add filter Clear all
Views & alerts

Save your view. Keep the filter you have built, and get an email when a new filing matches it. A free account does both.

When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

373 decisions over 120 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

373 decisions over 120 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

373 decisions over 120 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

373 decisions over 120 months
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
373 decisions over 120 months
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
373 decisions over 120 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

373 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
3 Jun 2025
Lewis William Chair and CEO
Sold on a plan
$391.25K 5,472 at 71.50
1.7%
Planned (10b5-1)
3 Jun 2025
MCGIRR DAVID W J Director
Sold on a plan
$231.73K 3,250 at 71.30
3.1%
Planned (10b5-1)
3 Jun 2025
Adsett Roger Chief Operating Officer
Sold at will
$132.99K 1,860 at 71.50
1.3%
Not planned
3 Jun 2025
Flammer Martina M.D. Chief Medical Officer
Sold at will
$120.55K 1,686 at 71.50
2.0%
Not planned
3 Jun 2025
Schaeffer Orlov S Nicole Chief People Strategy Officer
Sold at will
$117.40K 1,642 at 71.50
1.4%
Not planned
3 Jun 2025
Bonstein Sara Chief Financial Officer
Sold at will
$112.90K 1,579 at 71.50
1.4%
Not planned
3 Jun 2025
Smith Michael Alexander Chief Legal Officer
Sold at will
$103.53K 1,448 at 71.50
2.0%
Not planned
2 Jun 2025
Lewis William Chair and CEO · indirect
Sold on a plan 3×
$487.04K 6,830 at 71.31
2.8%
Planned (10b5-1)
30 May 2025
Smith Michael Alexander Chief Legal Officer
Sold on a plan 2×
$1.83M 26,327 at 69.65
27.0%
Planned (10b5-1)
21 May 2025
Desjardins Clarissa Director · indirect
Bought
$74.98K 1,130 at 66.35
59.6%
+60% of stake
20 May 2025
Lewis William Chair and CEO
Sold on a plan 3×
$1.42M 21,057 at 67.65
6.3%
Planned (10b5-1)
20 May 2025
Lewis William Chair and CEO · indirect
Sold on a plan 3×
$462.51K 6,830 at 67.72
2.8%
Planned (10b5-1)
20 May 2025
Desjardins Clarissa Director · indirect
Bought
$126.72K 1,895 at 66.87
opened
First buy on file
16 May 2025
Flammer Martina M.D. Chief Medical Officer
Sold on a plan
$121.49K 1,799 at 67.53
2.1%
Planned (10b5-1)
15 May 2025
Flammer Martina M.D. Chief Medical Officer
Sold on a plan
$649.79K 9,925 at 65.47
10.3%
Planned (10b5-1)
14 May 2025
Lewis William Chair and CEO
Sold at will
$247.42K 3,771 at 65.61
1.2%
Not planned
14 May 2025
Adsett Roger Chief Operating Officer
Sold at will
$126.30K 1,925 at 65.61
1.4%
Not planned
14 May 2025
Flammer Martina M.D. Chief Medical Officer
Sold at will
$114.42K 1,744 at 65.61
1.9%
Not planned
14 May 2025
Bonstein Sara Chief Financial Officer
Sold at will
$107.21K 1,634 at 65.61
1.5%
Not planned
14 May 2025
Schaeffer Orlov S Nicole Chief People Strategy Officer
Sold at will
$81.09K 1,236 at 65.61
1.1%
Not planned
14 May 2025
Smith Michael Alexander Chief Legal Officer
Sold at will
$26.83K 409 at 65.61
0.4%
Not planned
13 May 2025
Lewis William Chair and CEO
Sold at will 2×
$1.17M 17,442 at 66.97
5.2%
Not planned
13 May 2025
Bonstein Sara Chief Financial Officer
Sold at will
$601.47K 8,870 at 67.81
7.5%
Not planned
13 May 2025
Flammer Martina M.D. Chief Medical Officer
Sold at will
$570.15K 8,408 at 67.81
8.4%
Not planned
13 May 2025
Adsett Roger Chief Operating Officer
Sold at will
$507.35K 7,482 at 67.81
5.1%
Not planned
13 May 2025
Schaeffer Orlov S Nicole Chief People Strategy Officer
Sold at will
$338.98K 4,999 at 67.81
4.1%
Not planned
13 May 2025
Smith Michael Alexander Chief Legal Officer
Sold at will
$298.84K 4,407 at 67.81
4.6%
Not planned
1 May 2025
Lewis William Chair and CEO · indirect
Sold on a plan 2×
$495.67K 6,830 at 72.57
2.8%
Planned (10b5-1)
15 Apr 2025
Lewis William Chair and CEO · indirect
Sold on a plan 3×
$479.18K 6,830 at 70.16
2.8%
Planned (10b5-1)
1 Apr 2025
Lewis William Chair and CEO · indirect
Sold on a plan 4×
$502.58K 6,830 at 73.58
2.8%
Planned (10b5-1)
17 Mar 2025
Lewis William Chair and CEO
Sold on a plan 3×
$1.44M 18,750 at 77.03
5.3%
Planned (10b5-1)
17 Mar 2025
Lewis William Chair and CEO · indirect
Sold on a plan 3×
$526.18K 6,830 at 77.04
2.8%
Planned (10b5-1)
3 Mar 2025
Lewis William Chair and CEO
Sold on a plan 5×
$1.46M 18,750 at 77.79
5.3%
Planned (10b5-1)
3 Mar 2025
Lewis William Chair and CEO · indirect
Sold on a plan 5×
$531.28K 6,830 at 77.79
2.8%
Planned (10b5-1)
18 Feb 2025
Lewis William Chair and CEO
Sold on a plan 3×
$1.52M 18,750 at 81.03
5.3%
Planned (10b5-1)
18 Feb 2025
Bonstein Sara Chief Financial Officer
Sold on a plan 2×
$1.47M 18,322 at 80.31
13.4%
Planned (10b5-1)
18 Feb 2025
Lewis William Chair and CEO · indirect
Sold on a plan 3×
$553.44K 6,830 at 81.03
2.8%
Planned (10b5-1)
12 Feb 2025
Bonstein Sara Chief Financial Officer
Sold on a plan
$401.52K 5,019 at 80.00
3.5%
Planned (10b5-1)
11 Feb 2025
Bonstein Sara Chief Financial Officer
Sold on a plan
$1.06M 13,302 at 80.00
8.6%
Planned (10b5-1)
10 Feb 2025
Adsett Roger Chief Operating Officer
Sold on a plan 3×
$3.38M 42,975 at 78.61
22.7%
Planned (10b5-1)
10 Feb 2025
Flammer Martina M.D. Chief Medical Officer
Sold on a plan 3×
$2.97M 37,828 at 78.61
27.4%
Planned (10b5-1)
7 Feb 2025
Adsett Roger Chief Operating Officer
Sold at will
$7.96K 100 at 79.57
0.1%
Not planned
7 Feb 2025
Flammer Martina M.D. Chief Medical Officer
Sold at will
$4.78K 60 at 79.59
0.0%
Not planned
7 Feb 2025
Wise John Drayton Chief Commercial Officer
Sold at will
$789.10 10 at 78.91
0.0%
Not planned
6 Feb 2025
Lewis William Chair and CEO
Sold at will
$6.42M 79,350 at 80.90
14.9%
Not planned
6 Feb 2025
Adsett Roger Chief Operating Officer
Sold at will
$3.69M 45,605 at 80.90
19.4%
Not planned
6 Feb 2025
Flammer Martina M.D. Chief Medical Officer
Sold at will
$2.67M 33,055 at 80.90
19.3%
Not planned
6 Feb 2025
Bonstein Sara Chief Financial Officer
Sold at will
$2.30M 28,390 at 80.90
15.4%
Not planned
6 Feb 2025
Schaeffer Orlov S Nicole Chief People Strategy Officer
Sold at will
$1.90M 23,500 at 80.90
16.3%
Not planned
6 Feb 2025
Smith Michael Alexander Chief Legal Officer
Sold at will
$1.67M 20,650 at 80.90
17.6%
Not planned
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