American Superconductor Corporation
American Superconductor Corporation (AMSC) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · AMSC · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
20
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
American Superconductor Corporation insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
AMSC insider buying and selling by quarter
AMSC insider selling · AMSC insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Active insiders
Most active in past 12 months · AMSC ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
AMSC executive sell shares · AMSC board member insider trading · AMSC insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Apr 3, 2026 | Donnelly Terence Robert Director | Award | 2,665 | — | Form 4 |
| Apr 3, 2026 | OLIVER DAVID R JR Director | Award | 3,116 | — | Form 4 |
| Apr 3, 2026 | Littlefield Barbara G. Director | Award | 3,116 | — | Form 4 |
| Apr 3, 2026 | Klein Margaret D. Director | Award | 3,116 | — | Form 4 |
| Apr 3, 2026 | House Arthur H Director | Award | 3,116 | — | Form 4 |
| Apr 3, 2026 | Dambier Laura A. Director | Award | 3,116 | — | Form 4 |
| Feb 24, 2026 | OLIVER DAVID R JR Director | Sale | 200 | $7K | Form 4 |
| Jun 18, 2019 | OLIVER DAVID R JR Director | Purchase | 200 | $2K | Form 4 |
| Aug 6, 2025 | House Arthur H Director | Option | 9,703 | $66K | Form 4 |
| Aug 8, 2025 | House Arthur H Director | Sale | 9,703 | $494K | Form 4 |
| Aug 4, 2022 | Klein Margaret D. Director | Purchase | 500 | $3K | Form 4 |
| Aug 4, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 73,105 | $3.97M⚡ | Form 4 |
| Aug 4, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 27,743 | $1.53M⚡ | Form 4 |
| Aug 4, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 34,260 | $1.86M⚡ | Form 4 |
| Aug 4, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 15,740 | $868K | Form 4 |
| Aug 4, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 9,843 | $544K | Form 4 |
| Jun 11, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 12,315 | $352K | Form 4 |
| Jun 11, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 500 | $15K | Form 4 |
| Jun 11, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 6,342 | $181K | Form 4 |
| Jun 11, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 300 | $9K | Form 4 |
| Jun 6, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 4,744 | $151K | Form 4 |
| Jun 6, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 7,689 | $245K | Form 4 |
| May 27, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 24,506 | $626K | Form 4 |
| May 27, 2025 | McGahn Daniel P Chairman, President and CEO · Director | Sale | 98,149 | $2.61M⚡ | Form 4 |
| May 27, 2025 | Kosiba John W JR SVP, CFO & Treasurer | Sale | 10,097 | $258K | Form 4 |
McGahn Daniel P
Chairman, President and CEO · Director
Date
Aug 4
Shares
73,105
Price
$54.26
Value
$3.97M ⚡
McGahn Daniel P
Chairman, President and CEO · Director
Date
Aug 4
Shares
27,743
Price
$55.11
Value
$1.53M ⚡
Kosiba John W JR
SVP, CFO & Treasurer
Date
Aug 4
Shares
34,260
Price
$54.34
Value
$1.86M ⚡
Kosiba John W JR
SVP, CFO & Treasurer
Date
Aug 4
Shares
15,740
Price
$55.13
Value
$868K
Kosiba John W JR
SVP, CFO & Treasurer
Date
Aug 4
Shares
9,843
Price
$55.26
Value
$544K
McGahn Daniel P
Chairman, President and CEO · Director
Date
Jun 11
Shares
12,315
Price
$28.56
Value
$352K
McGahn Daniel P
Chairman, President and CEO · Director
Date
Jun 11
Shares
500
Price
$29.09
Value
$15K
Kosiba John W JR
SVP, CFO & Treasurer
Date
Jun 11
Shares
6,342
Price
$28.55
Value
$181K
Kosiba John W JR
SVP, CFO & Treasurer
Date
Jun 11
Shares
300
Price
$29.08
Value
$9K
Kosiba John W JR
SVP, CFO & Treasurer
Date
Jun 6
Shares
4,744
Price
$31.83
Value
$151K
McGahn Daniel P
Chairman, President and CEO · Director
Date
Jun 6
Shares
7,689
Price
$31.82
Value
$245K
McGahn Daniel P
Chairman, President and CEO · Director
Date
May 27
Shares
24,506
Price
$25.55
Value
$626K
McGahn Daniel P
Chairman, President and CEO · Director
Date
May 27
Shares
98,149
Price
$26.60
Value
$2.61M ⚡
Kosiba John W JR
SVP, CFO & Treasurer
Date
May 27
Shares
10,097
Price
$25.55
Value
$258K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About AMSC insider trading
AMSC insider trades
American Superconductor Corporation (AMSC) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Kosiba John W JR (SVP, CFO & Treasurer), McGahn Daniel P (Chairman, President and CEO · Director), House Arthur H (Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. AMSC insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For American Superconductor Corporation's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
AMSC insider trading · 5 questionsThe insiders of American Superconductor Corporation (AMSC) include executives and directors such as Kosiba John W JR (SVP, CFO & Treasurer), McGahn Daniel P (Chairman, President and CEO · Director), House Arthur H (Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026