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Insider ActivityAMSC
Kosiba John W JR, SVP, CFO & Treasurer at AMERICAN SUPERCONDUCTOR CORP /DE/, sold $130K of AMSC
Updated Jun 6, 2026
Kosiba John W JR
SVP, CFO & Treasurer
AMERICAN SUPERCONDUCTOR CORP /DE/ ·
$AMSC
Transaction Details
| Insider | Kosiba John W JR |
|---|---|
| Title | SVP, CFO & Treasurer |
| Company | AMERICAN SUPERCONDUCTOR CORP /DE/ |
| Ticker | AMSC |
| Transaction Type | Sale |
| Transaction Date | 2026-06-03 |
| Shares Traded | 2,638 |
| Price Per Share | $49.2846 |
| Total Value | $130K |
| Filed Date | 2026-06-03 |
| Accession Number | 0001193125-26-255471 |
Ownership Context
| Shares Owned After Transaction | 346,590 |
|---|---|
| Ownership Type | Direct |
SEC Filing
Accession: 0001193125-26-255471
Other Insider Trades — AMSC
| Insider | Title | Action | Value | Date |
|---|---|---|---|---|
| McGahn Daniel P | Chairman, President and CEO | sold | $42K | 2026-06-03 |
| Kosiba John W JR | SVP, CFO & Treasurer | sold | $31K | 2026-06-03 |
| McGahn Daniel P | Chairman, President and CEO | sold | $222K | 2026-06-03 |
| McGahn Daniel P | Chairman, President and CEO | sold | $25K | 2026-06-03 |
| Kosiba John W JR | SVP, CFO & Treasurer | sold | $155K | 2026-06-03 |
| McGahn Daniel P | Chairman, President and CEO | sold | $342K | 2026-06-03 |
| McGahn Daniel P | Chairman, President and CEO | sold | $1.4M | 2026-06-02 |
| McGahn Daniel P | Chairman, President and CEO | sold | $681K | 2026-06-02 |
| McGahn Daniel P | Chairman, President and CEO | sold | $1.5M | 2026-06-02 |
| Kosiba John W JR | SVP, CFO & Treasurer | sold | $619K | 2026-06-02 |
Other Trades by Kosiba John W JR
| Ticker | Company | Action | Value | Date |
|---|---|---|---|---|
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $31K | 2026-06-03 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $155K | 2026-06-03 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $614K | 2026-06-02 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $31K | 2026-06-02 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $619K | 2026-06-02 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | sold | $282K | 2026-06-02 |
| AMSC | AMERICAN SUPERCONDUCTOR CORP /DE/ | traded | — | 2026-06-01 |
Full Ticker Profile
View all insider trades, dark pool activity, congressional filings, and the Whisper Score for AMSC — AMERICAN SUPERCONDUCTOR CORP /DE/ →
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Data sourced from SEC Form 4 insider trading filings. Transaction details are as reported to the Securities and Exchange Commission. This page does not constitute financial advice. StonkWhisper presents public records — it does not verify or guarantee the accuracy of SEC filings.
Last updated: June 06, 2026 at 07:00 UTC