AMSC American Superconductor (AMSC) Insider Trading, Ownership & Congress Trades
Industrials · Motors & generators · CIK 0000880807
SEC filings
Insider buyers, 180 days
0
House members buying, 1 year
0
STOCK Act, US House only, disclosed up to 45 days after the trade
Funds added, last quarter
176
13F, latest reported quarter
What the filings say about AMSC
Insiders, 180 days
-$7.8M net sold
3 sellers · 0% of sales under a 10b5-1 plan
American Superconductor insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, AMERICAN SUPERCONDUCTOR CORP /DE/ insiders sold a net $7.8M of stock across 71 Form 4 purchases and sales, with no insider buying. Source: SEC Form 4 filings, as of 2026-10-27.
Insider
Filed
Shares
Value
Since filing
Context
- First Form 4 purchase or sale (code P or S) here by this insider on our record.
- The trade is 26.7% of the 14,992 shares held after it.
- 2 other insiders sold within 30 days.
- 176 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Director Dambier Laura A. sold about $150.5K of AMSC on Jun 11, 2026; 2 other insiders sold within 30 days and 176 funds added in the latest 13F quarter.Context
- 33 earlier Form 4 trades (code P or S) here by this insider (2 buys, 31 sales), the last on Jun 8, 2026.
- +37.5% median (+37.5% mean) 90-day return after 2 previous buys.
- The trade is 1.5% of the 336,120 shares held after it.
- 2 other insiders sold within 30 days.
- 176 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, CFO & Treasurer Kosiba John W JR sold about $187.6K of AMSC on Jun 11, 2026; 2 other insiders sold within 30 days and 176 funds added in the latest 13F quarter.Context
- 33 earlier Form 4 trades (code P or S) here by this insider (2 buys, 31 sales), the last on Jun 8, 2026.
- +37.5% median (+37.5% mean) 90-day return after 2 previous buys.
- The trade is 0.5% of the 334,377 shares held after it.
- 2 other insiders sold within 30 days.
- 176 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP, CFO & Treasurer Kosiba John W JR sold about $66.0K of AMSC on Jun 11, 2026; 2 other insiders sold within 30 days and 176 funds added in the latest 13F quarter.Context
- 28 earlier Form 4 trades (code P or S) here by this insider (1 buy, 27 sales), the last on Jun 8, 2026.
- The trade is 0.4% of the 1,131,929 shares held after it.
- 2 other insiders sold within 30 days.
- 176 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chairman, President and CEO McGahn Daniel P sold about $174.5K of AMSC on Jun 11, 2026; 2 other insiders sold within 30 days and 176 funds added in the latest 13F quarter.Context
- 28 earlier Form 4 trades (code P or S) here by this insider (1 buy, 27 sales), the last on Jun 8, 2026.
- The trade is 1.0% of the 1,136,538 shares held after it.
- 2 other insiders sold within 30 days.
- 176 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: Chairman, President and CEO McGahn Daniel P sold about $429.0K of AMSC on Jun 11, 2026; 2 other insiders sold within 30 days and 176 funds added in the latest 13F quarter.71 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Seven facts, ranked against the sector ·
Rank is not a forecast
Insiders
net -$7.8M over 180 days
below 72% of Industrials
Congress
no House purchase disclosed in the last 12 months
Funds
176 funds bought in last quarter
more than 54% of Industrials
Revenue
+34.3% year over year
more than 89% of Industrials
Margin
44.7% net margin
the highest in Industrials
Buybacks
no share repurchases reported
Short interest
8.3% of the float short (float per yahoo 2026-10-26) · 5.4 days to cover · settled 2026-09-30
more than 88% of Industrials
What changed in the last 30 days
Oct 27Insider selling stopped: no sales in 90 days after 24 in the prior 90
Why it matters
The absence is the signal: 24 sales in one 90-day window and none in the next is a change of behaviour, not a filing.
Watch AMSC
A free account keeps a watchlist and can send one email a day when insiders, funds or Congress file on the names in it. No password and no card.
The year, with the filings on it
Total return over 12 months. Each marker is a filing; hover or tap one for the detail.
-53.6%12M
Insider sell
Indexed to 100, dividend-adjusted, not a price chart.
When a name files heavily, the largest trades are drawn first.
Who owns AMSC: institutional holders (13F)
13F holdings, latest reported quarter
4,095,371 sh
$170.0M
2,034,219 sh
$84.4M
1,704,006 sh
$70.7M
1,429,090 sh
$59.3M
1,418,863 sh
$58.9M
Congress trades in AMSC
No Congress trades reported
No House member has disclosed a trade in this stock. See what Congress is buying.
Activist and 5% holders (13D/13G)
No 5%+ ownership filings
Nobody has filed for crossing 5%. That is a fact, not missing data.
AMSC planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
AMSC mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Pear tree essex environmental opportunities fund
$1.1M position · as of 2026-06-30
3.2%
ALPS Clean Energy ETF
$3.7M position · as of 2026-05-31
2.6%
Oberweis Micro-Cap Fund
$38.4M position · as of 2026-06-30
2.4%
State Street(R) SPDR(R) S&P Kensho Clean Power ETF
$5.6M position · as of 2026-06-30
2.3%
Corgi High Voltage Grid Equipment ETF
$265.2K position · as of 2026-06-30
2.2%
F/m Emerald Special Situations ETF
$592.8K position · as of 2026-07-31
1.8%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Executive pay vs shareholder return · Daniel P. McGahn
CEO pay, headline and as actually paid, against the company's
return and its chosen peers' (DEF 14A).
FY
CEO total
Actually paid
Other execs, avg
TSR
Peer TSR
2024
$7.5M
$17.5M
$3.8M
+79%
+175%
2023
$6.0M
$7.6M
$2.9M
-4%
+38%
2022
$3.3M
$7.7M
$1.5M
-29%
+23%
2021
$1.9M
$1.1M
$991.5K
-74%
+4%
2020
$1.9M
-$1.9M
$900.8K
-60%
-0%
Tagged by the company under SEC Item 402(v). Returns are
cumulative from the start of the disclosure period. Green where the company beat its own peer group.
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
The complete filing record, in one place.
The record shows a net $7.8M sold by insiders over 180 days, 176 funds added last quarter. Each figure is a federal filing, dated the day it went public.
AMSC financials
Revenue growth
+34.3%
XBRL, annual
Net margin
44.7%
Ratios from the company's XBRL filings, latest filings
Revenue, TTM
$320.9M
four quarters, 2025-07-01 to 2026-06-30
Revenue, TTM AMSC
| FY Mar 2026 | $299.2M |
| FY Mar 2025 | $222.8M |
| FY Mar 2024 | $145.6M |
| FY Mar 2023 | $106.0M |
| FY Mar 2022 | n/a |
| Jun 2026 | $94.1M |
| Mar 2026 | $86.4M |
| Dec 2025 | $74.5M |
| Sep 2025 | $65.9M |
| Jun 2025 | $72.4M |
| Mar 2025 | $66.7M |
| Dec 2024 | $61.4M |
| Sep 2024 | $54.5M |
At each fiscal year end
Single quarter
Net margin, TTM
+42.6%
net income over revenue, 2025-07-01 to 2026-06-30
Net margin, TTM AMSC
| FY Mar 2026 | +44.7% |
| FY Mar 2025 | -60,053% |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | +10.1% |
| Mar 2026 | +5.2% |
| Dec 2025 | +158.1% |
| Sep 2025 | +7.2% |
| Jun 2025 | +9.3% |
| Mar 2025 | -200,756% |
| Dec 2024 | +4.0% |
| Sep 2024 | +9.0% |
At each fiscal year end
Single quarter
Free cash flow, TTM
$20.5M
operating cash flow minus capex, 2025-07-01 to 2026-06-30
Free cash flow, TTM AMSC
| FY Mar 2026 | $18.3M |
| FY Mar 2025 | $25.9M |
| FY Mar 2024 | $1.2M |
| FY Mar 2023 | -$23.7M |
| FY Mar 2022 | -$19.9M |
| Jun 2026 | $5.6M |
| Mar 2026 | $7.5M |
| Dec 2025 | $2.4M |
| Sep 2025 | $5.1M |
| Jun 2025 | $3.3M |
| Mar 2025 | $5.3M |
| Dec 2024 | $5.3M |
| Sep 2024 | $12.1M |
At each fiscal year end
Single quarter
Debt to equity
0.01x
long-term 2025-12-31 (6 months older than the period end) plus current 2025-12-31 (6 months older than the period end); equity 2026-06-30
Debt to equity AMSC
| FY Mar 2026 | 0.01x |
| FY Mar 2025 | 0.00x |
| FY Mar 2024 | 0.00x |
| FY Mar 2023 | 0.00x |
| FY Mar 2022 | 0.00x |
| Jun 2026 | 0.01x |
| Mar 2026 | 0.01x |
| Dec 2025 | 0.01x |
| Sep 2025 | 0.00x |
| Jun 2025 | 0.00x |
| Mar 2025 | 0.00x |
| Dec 2024 | 0.00x |
| Sep 2024 | 0.00x |
At each fiscal year end
Trailing four quarters at each quarter end
Cash flow to debt
4.52x
TTM operating cash flow over long-term 2025-12-31 (6 months older than the period end) plus current 2025-12-31 (6 months older than the period end)
Cash flow to debt AMSC
| FY Mar 2026 | 2.99x |
| FY Mar 2025 | n/a |
| FY Mar 2024 | 85.52x |
| FY Mar 2023 | -249.83x |
| FY Mar 2022 | -117.14x |
| Jun 2026 | 4.52x |
| Mar 2026 | 2.99x |
| Dec 2025 | 2.60x |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on equity
+30.2%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on equity AMSC
| FY Mar 2026 | +35.6% |
| FY Mar 2025 | -78,323% |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | +30.2% |
| Mar 2026 | +35.6% |
| Dec 2025 | -36,650% |
| Sep 2025 | -50,567% |
| Jun 2025 | -56,164% |
| Mar 2025 | -78,323% |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on assets
+22.5%
TTM net income over average of 2025-06-30 and 2026-06-30
Return on assets AMSC
| FY Mar 2026 | +25.5% |
| FY Mar 2025 | -49,259% |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | +22.5% |
| Mar 2026 | +25.5% |
| Dec 2025 | -25,963% |
| Sep 2025 | -35,965% |
| Jun 2025 | -38,615% |
| Mar 2025 | -49,259% |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on invested capital
n/a
effective tax rate -564%, not meaningful
Return on invested capital AMSC
| FY Mar 2026 | n/a |
| FY Mar 2025 | n/a |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | n/a |
| Mar 2026 | n/a |
| Dec 2025 | n/a |
| Sep 2025 | +8.7% |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Return on capital employed
+3.2%
operating income (EBIT proxy) over average of 2025-06-30 and 2026-06-30 minus current liabilities
Return on capital employed AMSC
| FY Mar 2026 | +2.8% |
| FY Mar 2025 | -0.6% |
| FY Mar 2024 | -9.3% |
| FY Mar 2023 | -31.2% |
| FY Mar 2022 | n/a |
| Jun 2026 | +3.2% |
| Mar 2026 | +2.8% |
| Dec 2025 | +3.4% |
| Sep 2025 | +4.1% |
| Jun 2025 | +3.1% |
| Mar 2025 | -0.6% |
| Dec 2024 | -3.4% |
| Sep 2024 | -5.3% |
At each fiscal year end
Trailing four quarters at each quarter end
P/E, trailing
8.55x
close 2026-10-26 over four quarters of diluted EPS, 2025-07-01 to 2026-06-30
P/E, trailing AMSC
| FY Mar 2026 | 11.51x |
| FY Mar 2025 | 120.93x |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | 13.98x |
| Mar 2026 | 11.51x |
| Dec 2025 | 9.82x |
| Sep 2025 | 160.51x |
| Jun 2025 | 94.08x |
| Mar 2025 | 120.93x |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Enterprise value
$1.1B
market value at close 2026-10-26 on 2026-07-31 shares, plus long-term 2025-12-31 (6 months older than the period end) plus current 2025-12-31 (6 months older than the period end), minus cash 2026-06-30
Enterprise value AMSC
| FY Mar 2026 | $1.5B |
| FY Mar 2025 | $636.3M |
| FY Mar 2024 | $324.8M |
| FY Mar 2023 | $121.7M |
| FY Mar 2022 | $176.1M |
| Jun 2026 | $1.8B |
| Mar 2026 | $1.5B |
| Dec 2025 | $1.2B |
| Sep 2025 | $2.5B |
| Jun 2025 | $1.2B |
| Mar 2025 | $636.3M |
| Dec 2024 | $896.5M |
| Sep 2024 | $831.6M |
At each fiscal year end
Trailing four quarters at each quarter end
FCF yield
+1.7%
TTM free cash flow over market value at close 2026-10-26
FCF yield AMSC
| FY Mar 2026 | +1.1% |
| FY Mar 2025 | +3.6% |
| FY Mar 2024 | +0.3% |
| FY Mar 2023 | -16.4% |
| FY Mar 2022 | -9.2% |
| Jun 2026 | +1.0% |
| Mar 2026 | +1.1% |
| Dec 2025 | +1.2% |
| Sep 2025 | +0.7% |
| Jun 2025 | +1.8% |
| Mar 2025 | +3.6% |
| Dec 2024 | +2.3% |
| Sep 2024 | +2.0% |
At each fiscal year end
Trailing four quarters at each quarter end
PEG, trailing
0.01x
P/E over trailing EPS growth of 662%: four quarters to 2026-06-30 against the four to 2025-06-30
PEG, trailing AMSC
| FY Mar 2026 | 0.01x |
| FY Mar 2025 | n/a |
| FY Mar 2024 | n/a |
| FY Mar 2023 | n/a |
| FY Mar 2022 | n/a |
| Jun 2026 | 0.02x |
| Mar 2026 | 0.01x |
| Dec 2025 | n/a |
| Sep 2025 | n/a |
| Jun 2025 | n/a |
| Mar 2025 | n/a |
| Dec 2024 | n/a |
| Sep 2024 | n/a |
At each fiscal year end
Trailing four quarters at each quarter end
Price as of 2026-10-26. Hover or tap a tile for its yearly and quarterly history.
Method
TTM is four consecutive fiscal quarters; Q4 is the year minus nine months when not filed. Returns use the average of opening and closing balances. EBIT is approximated by operating income. PEG uses trailing EPS growth.
Fundamentals
Annual figures from XBRL filings. Pick a past date to see them as known then.
| 2026-03 | 2025-03 | 2024-03 | 2023-03 | |
|---|---|---|---|---|
| Revenue | $299.2M | $222.8M | $145.6M | $106.0M |
| Gross profit | $91.4M | $61.9M | $35.3M | $8.5M |
| Operating income | $11.4M | -$1.1M | -$11.4M | -$33.0M |
| Net income | $133.8M | -$133.8B | $6.0B | -$11.1B |
| EPS (diluted) | 3.05 | 0.16 | -0.37 | -1.26 |
| Operating cash flow | $23.1M | $28.3M | $2.1M | -$22.5M |
| Cash | $140.7M | $79.5M | $90.5M | $23.4M |
| Long-term debt | n/a | $0 | $0 | $15.0K |
| Buybacks | $0 | $126.0K | $0 | n/a |
SEC XBRL, fiscal years, as known on 2026-10-27
AMSC Stock Sonar score 6/7 axes
Find similar shapesCompareAMSC ranks highest on financial health (93rd percentile) and growth (89th), and lowest on insider conviction (13th), among Industrials peers.
6 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
AMSC filings, in plain words
Are American Superconductor insiders buying or selling AMSC?
In the 180 days to 2026-10-27, American Superconductor insiders were net sellers, a net $7.8M across purchases and sales reported on Form 4, by 3 sellers.
Read the full summary
In the 180 days to 2026-10-27, American Superconductor insiders were net sellers of AMSC, a net $7.8M across purchases and sales reported on Form 4 by 3 sellers. None of the 24 insider sales was flagged as made under a Rule 10b5-1 plan. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.
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