AMSC
AMERICAN SUPERCONDUCTOR CORP
AMERICAN SUPERCONDUCTOR CORP (AMSC) has 7 SEC Form 4 filings (26 transaction rows) in the rolling window, disclosed by 3 distinct insiders. Most recent filing: Jun 12, 2026.
The most active filer is SVP, CFO & Treasurer Kosiba John W JR with 4 filings. Insiders have net sold $7.8M over the trailing 6 months.
- Industry:Industrial - Machinery
- CEO:Daniel Patrick McGahn
- Employees:569
- HQ:Ayer, MA, US
- IPO:1991-12-12
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$7.8M
reported sales (SEC code S)
Unique Insiders
3
in the rolling window
Market Cap
$1.6B
latest known value
| Source | ||||||
|---|---|---|---|---|---|---|
Dambier Laura A.First filing | Director | Sale | 4,000 | $151K | Jun 12 | SEC ↗ |
| SVP, CFO & Treasurer | Sale | 6,769 | $254K | Jun 11 | SEC ↗ | |
| Chairman, President and CEO | Sale | 16,117 | $604K | Jun 11 | SEC ↗ | |
| SVP, CFO & Treasurer | Sale | 4,835 | $202K | Jun 10 | SEC ↗ | |
| Chairman, President and CEO | Sale | 9,670 | $404K | Jun 10 | SEC ↗ | |
McGahn Daniel PFirst filing | Chairman, President and CEO | Sale | 72,525 | $3.7M | Jun 3 | SEC ↗ |
McGahn Daniel PFirst filing | Chairman, President and CEO | Sale | 12,893 | $630K | Jun 3 | SEC ↗ |
Kosiba John W JRFirst filing | SVP, CFO & Treasurer | Sale | 30,462 | $1.5M | Jun 3 | SEC ↗ |
Kosiba John W JRFirst filing | SVP, CFO & Treasurer | Sale | 6,447 | $316K | Jun 3 | SEC ↗ |
Related companies
AMERICAN SUPERCONDUCTOR CORP is in the Manufacturing sector.