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sellWeak cluster of 210b5-1 plan

Daniel P McGahn sold $366k of AMSC

Chairman, President and CEO at AMERICAN SUPERCONDUCTOR CORP /DE/. 12,815 shares at an average of $28.58, traded Jun 11, 2025, filed Jun 12, 2025.

Warning score
28
Value
$366k
12,815 shares
Holdings after
1,283,982
-1% from before
From 52-week low
+88%
low $15.80, close $29.67
From 52-week high
-19%
high $36.81, as of Jun 11, 2025

Score components

  • Role
    CEO
    +25
  • Trade size
    $366k at market
    +15
  • Share of holdings sold
    Sold 1.0% of holdings
    0
  • Cluster
    2 insiders selling within 14 days
    +8
  • 10b5-1 plan
    Pre-scheduled under a 10b5-1 plan
    -20

What happened after comparable sells

Same side and tier, against the S&P 500, at 1, 3 and 6 months. Shown to Pro users; the whole table is on the backtest page.

This signal so far: 1m +34.0%, 3m +87.2%, 6m +10.3%.

Price around the trade, and since

From a quarter before the trade to today. The arrow is the trade, the circle the day the filing reached EDGAR, which is the first day anyone outside could act; the dotted line is the S&P 500 rebased to that day's close.

AMSCOct 13, 2026 · close 28.71
Since filing Jun 12, 2025: -1.8%SPY +31.0% · excess -32.8%

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value; the dashed line is the close on the filing day, the dotted line SPY rebased to it.Charts by TradingView Lightweight Charts™

Rows in this filing

Every transaction in Form 4 0000950170-25-085421, as filed. Open on EDGAR

DateTransactionSharesPriceValueHoldings afterFiled
Jun 11, 2025SOpen-market sale
Common Stock10b5-1
-12,315$28.56$352k1,284,482Jun 12, 2025
Jun 11, 2025SOpen-market sale
Common Stock10b5-1
-500$29.09$15k1,283,982Jun 12, 2025

Related signals

Other insiders at AMERICAN SUPERCONDUCTOR CORP /DE/ and this insider’s other filings.

ScoreCompanyInsiderValueHoldingsFiled
46Moderate
AMSCsell 3
AMERICAN SUPERCONDUCTOR CORP /DE/
Laura A. Dambier
director
$151k
4,000 shares
-21%
39Weak
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
Daniel P McGahn
Chairman, President and CEO
$604k
16,117 shares
-1%
30Weak
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
John W Kosiba JR
SVP, CFO & Treasurer
$254k
6,769 shares
-2%
36Weak
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
Daniel P McGahn
Chairman, President and CEO
$404k
9,670 shares
-1%
29Weak
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
John W Kosiba JR
SVP, CFO & Treasurer
$202k
4,835 shares
-1%
45Moderate
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
Daniel P McGahn
Chairman, President and CEO
$4.3M
85,418 shares
-7%
42Moderate
AMSCsell 310b5-1
AMERICAN SUPERCONDUCTOR CORP /DE/
John W Kosiba JR
SVP, CFO & Treasurer
$1.9M
36,909 shares
-10%
15Weak
AMSCsell
AMERICAN SUPERCONDUCTOR CORP /DE/
David R Oliver Jr
director
$6,820
200 shares
-0%
10Weak
AMSCbuy
AMERICAN SUPERCONDUCTOR CORP /DE/
David R Oliver Jr
director
$1,666
200 shares
+0%
38Weak
AMSCsell 3
AMERICAN SUPERCONDUCTOR CORP /DE/
Arthur H House
director
$494k
9,703 shares
-17%

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Daniel P McGahn sold $366k of AMSC | InsiderTell