Insider Transactions Reported by 9 Insiders of AMERICAN SUPERCONDUCTOR CORP /DE/

Symbol
AMSC on Nasdaq
Location
Devens, MA

Insiders trading volume in the past year

AMERICAN SUPERCONDUCTOR CORP /DE/ executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
Daniel P. McGahn Chairman, President and CEO, Director $65,717,243 -$9,657,151 -13% 04 Aug 2025
John W. Kosiba Jr. SVP, CFO & Treasurer $19,454,543 -$5,224,458 -21% 04 Aug 2025
Arthur H. House Director $2,477,944 -$494,082 -17% 06 Aug 2025
David R. Oliver Jr. Director $2,070,108 -$6,820 -0.33% 24 Feb 2026
Barbara G. Littlefield Director $913,816 03 Apr 2025
Laura A. Dambier Director $449,003 03 Apr 2025
Vikram S. Budhraja Director $352,876 10 Jun 2022
Margaret D. Klein Director $91,132 03 Apr 2025
Terence Robert Donnelly Director 27 May 2025

Recent Insider Transactions by Companies or Individuals for AMERICAN SUPERCONDUCTOR CORP /DE/

Showing up to 300 most recent insider transactions from the last 12 months.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
David R. Oliver Jr. AMSC Common Stock Sale -0.33% $6,820 $34.10 -200 60,707 24 Feb 2026 Direct
Arthur H. House AMSC Common Stock Sale -16.6% $494,082 $50.92 -9,703 48,663 08 Aug 2025 Direct
Arthur H. House AMSC Common Stock Options Exercise 19.9% 9,703 58,366 06 Aug 2025 Direct
Arthur H. House AMSC Stock Options (Right to Buy) Options Exercise -100% -9,703 0 06 Aug 2025 Direct
Daniel P. McGahn AMSC Common Stock Sale -7.85% $5,495,526 $54.49 -100,848 1,183,134 04 Aug 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Sale -100% $543,924 $55.26 -9,843 0 04 Aug 2025 By 401(k) plan
John W. Kosiba Jr. AMSC Common Stock Sale -12.4% $2,729,456 $54.59 -50,000 352,890 04 Aug 2025 Direct
Daniel P. McGahn AMSC Common Stock Sale -0.99% $366,242 $28.58 -12,815 1,283,982 11 Jun 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Sale -1.62% $189,778 $28.57 -6,642 402,890 11 Jun 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Sale -1.15% $151,012 $31.83 -4,744 409,532 06 Jun 2025 Direct
Daniel P. McGahn AMSC Common Stock Sale -0.59% $244,670 $31.82 -7,689 1,296,797 06 Jun 2025 Direct
Daniel P. McGahn AMSC Common Stock Sale -8.59% $3,236,835 $26.39 -122,655 1,304,486 27 May 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Sale -10.8% $1,319,757 $26.40 -50,000 414,276 27 May 2025 Direct
Terence Robert Donnelly AMSC Stock Options (Right to Buy) Award 2,112 2,112 27 May 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Sale -2.49% $290,530 $24.50 -11,860 464,276 20 May 2025 Direct
Daniel P. McGahn AMSC Common Stock Sale -0.89% $313,878 $24.49 -12,815 1,427,141 20 May 2025 Direct
John W. Kosiba Jr. AMSC Common Stock Award 33.7% 120,000 476,136 15 May 2025 Direct
Daniel P. McGahn AMSC Common Stock Award 20% 240,000 1,439,956 15 May 2025 Direct
David R. Oliver Jr. AMSC Common Stock Award 4.54% 2,639 60,707 03 Apr 2025 Direct
Barbara G. Littlefield AMSC Common Stock Award 8.89% 2,639 32,311 03 Apr 2025 Direct
Margaret D. Klein AMSC Common Stock Award 19.9% 2,639 15,876 03 Apr 2025 Direct
Arthur H. House AMSC Common Stock Award 5.73% 2,639 48,663 03 Apr 2025 Direct
Laura A. Dambier AMSC Common Stock Award 19.9% 2,639 15,876 03 Apr 2025 Direct
* An asterisk sign (*) next to the price indicates that the price is likely invalid.