Insider trading

Period: 120 months Stock: AMSC Role: CFO × + Add filter Clear all
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When

Period

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

31 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.

31 decisions over 120 months Remove this filter
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.

31 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.

31 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.
31 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
31 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.

31 decisions over 120 months
Stock
Insider
Type ?
Why it stands out
11 Jun 2026
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 2×
$253.58K 6,769 at 37.46
2.0%
Planned (10b5-1)
8 Jun 2026
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 2×
$201.97K 4,835 at 41.77
1.4%
Planned (10b5-1)
3 Jun 2026
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 3×
$315.55K 6,447 at 48.94
1.8%
Planned (10b5-1)
2 Jun 2026
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 4×
$1.55M 30,462 at 50.77
8.0%
Planned (10b5-1)
4 Aug 2025
Kosiba John W JR SVP, CFO & Treasurer
Sold at will 2×
$2.73M 50,000 at 54.59
12.4%
Not planned
4 Aug 2025
Kosiba John W JR SVP, CFO & Treasurer · indirect
Sold at will
$543.92K 9,843 at 55.26
100%
Sold half or more
11 Jun 2025
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 2×
$189.78K 6,642 at 28.57
1.6%
Planned (10b5-1)
6 Jun 2025
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan
$151.01K 4,744 at 31.83
1.1%
Planned (10b5-1)
27 May 2025
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 2×
$1.32M 50,000 at 26.40
10.8%
Planned (10b5-1)
20 May 2025
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan
$290.53K 11,860 at 24.50
2.5%
Planned (10b5-1)
4 Nov 2024
Kosiba John W JR SVP, CFO & Treasurer
Sold at will
$1.41M 50,000 at 28.28
12.3%
Not planned
11 Jun 2024
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan
$693.75K 32,000 at 21.68
9.2%
Planned (10b5-1)
21 May 2024
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan 2×
$429.81K 29,000 at 14.82
7.7%
Planned (10b5-1)
22 Jun 2023
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan
$177.82K 29,878 at 5.95
7.3%
Planned (10b5-1)
21 Jun 2023
Kosiba John W JR SVP, CFO & Treasurer
Sold on a plan
$308.53K 50,132 at 6.15
11.0%
Planned (10b5-1)
16 Dec 2022
Kosiba John W JR SVP, CFO & Treasurer
Bought
$52.47K 15,000 at 3.50
4.4%
12 Dec 2022
Kosiba John W JR SVP, CFO & Treasurer
Bought
$83.40K 25,000 at 3.34
8.0%
First buy on file
10 Jun 2022
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$50.62K 8,473 at 5.97
4.3%
31 May 2022
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$72.68K 13,325 at 5.45
6.3%
10 Dec 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$257.41K 22,754 at 11.31
9.8%
2 Nov 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated 2×
$136.08K 7,242 at 18.79
3.0%
1 Nov 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$71.38K 3,766 at 18.95
1.5%
1 Jul 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$113.18K 6,409 at 17.66
2.7%
24 May 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$82.14K 5,794 at 14.18
2.4%
21 Jan 2021
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated 3×
$691.31K 25,094 at 27.55
10.5%
25 Nov 2020
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$481.96K 25,000 at 19.28
9.4%
19 Dec 2019
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$78.50K 10,287 at 7.63
4.9%
28 Dec 2018
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$127.59K 12,374 at 10.31
6.0%
7 Dec 2018
Kosiba John W JR SVP, CFO & Treasurer
Sold, plan not stated
$66.15K 6,250 at 10.58
2.9%
9 Feb 2018
Kosiba John W JR SVP, CFO & Treasurer
Bought
$0.00 5,000 at 0.00
4.6%
First buy on file
10 May 2017
Kosiba John W JR SVP, CFO & Treasurer
Bought
$25.00K 6,250 at 4.00
16.7%
First buy on file
Showing 1–31 of 31.