American Superconductor Corporation
A maker of power-control equipment for electric grids, wind turbines, and warships, American Superconductor builds products like D-VAR voltage stabilizers, wind-turbine electrical systems, and high-temperature superconductor (HTS) wire used in naval degaussing systems for the U.S. and Royal Canadian navies. Founded in 1987 by MIT materials scientists (one reportedly started it in his kitchen), the company's Amperium HTS wire is nicknamed the "optical fiber of power" because a thin ribbon carries far more electricity than copper of the same size.
Granted 480.0K · Sold 425.8K
Granted 240.0K · Sold 292.6K
Granted 9.6K · Sold 200
Granted 19.3K · Sold 9.7K
Granted 9.6K
Granted 9.6K
Granted 9.6K · Sold 4.0K
Granted 2.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| McGahn Daniel PChairman, President and CEO, Director · 26 transactions | +5.6% | 1.15M | 480.0K | — | 425.8K |
| Kosiba John W JRSVP, CFO & Treasurer · 27 transactions | +65.1% | 703.4K | 240.0K | — | 292.6K |
| Oliver David R JrDirector · 4 transactions | +17.7% | 63.8K | 9.6K | — | 200 |
| House Arthur HDirector · 5 transactions | +22.7% | 51.8K | 19.3K | — | 9.7K |
| Littlefield Barbara G.Director · 3 transactions | +37.1% | 35.4K | 9.6K | — | — |
| Klein Margaret D.Director · 3 transactions | +107.4% | 19.5K | 9.6K | — | — |
| Dambier Laura A.Director · 4 transactions | +59.5% | 15.0K | 9.6K | — | 4.0K |
| Donnelly Terence RobertDirector · 1 transaction | — | 2.7K | 2.7K | — | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -732.3K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.