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American Superconductor Corporation (AMSC)

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Insider transactions

A complete record of Form 4 filings tracking every share acquisition and disposal by executives, directors, and senior officers. Filterable by date range and transaction type, the table exposes the direct market actions of those with the deepest knowledge of a company's operations — providing a factual, data-driven signal of internal conviction that complements traditional fundamental and technical analysis.

Transaction date
Executive
Executive Title
Security Type
Acquisition / Disposal
Shares
Share price
Sep 18, 2026LITTLEFIELD, BARBARA G.DirectorCommon StockAcquisition1,6070
Jun 11, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal4,60937.851
Jun 11, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal5,02637.327
Jun 11, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal1,74337.852
Jun 11, 2026DAMBIER, LAURA A.DirectorCommon StockDisposal4,00037.63
Jun 11, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal11,50837.283
Jun 8, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal4,67842.194
Jun 8, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal3,28641.501
Jun 8, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal4,99241.389
Jun 8, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal1,54942.347
Jun 3, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal3,20048.307
Jun 3, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal50050.288
Jun 3, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal2,63849.285
Jun 3, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal7,07548.307
Jun 3, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal4,50149.254
Jun 3, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal60950.826
Jun 3, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal81750.99
Jun 2, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal13,76249.451
Jun 2, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal28,55851.459
Jun 2, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal2,30552.136
Jun 2, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal12,12250.619
Jun 2, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal5,70449.461
Jun 2, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal60052.192
Jun 2, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockDisposal27,90050.631
Jun 2, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockDisposal12,03651.466
Jun 1, 2026MCGAHN, DANIEL PDirector, Chairman, President and CEOCommon StockAcquisition60,0000
Jun 1, 2026KOSIBA, JOHN W JRSVP, CFO & TreasurerCommon StockAcquisition30,0000
Apr 3, 2026OLIVER, DAVID R JRDirectorCommon StockAcquisition3,1160
Apr 3, 2026DAMBIER, LAURA A.DirectorCommon StockAcquisition3,1160
Apr 3, 2026KLEIN, MARGARET D.DirectorCommon StockAcquisition3,1160
Apr 3, 2026HOUSE, ARTHUR HDirectorCommon StockAcquisition3,1160
Apr 3, 2026DONNELLY, TERENCE ROBERTDirectorCommon StockAcquisition2,6650
Apr 3, 2026LITTLEFIELD, BARBARA G.DirectorCommon StockAcquisition3,1160
Feb 24, 2026OLIVER, DAVID R JRDirectorCommon StockDisposal20034.1