John W. Kosiba Jr., SVP, CFO and Treasurer of American Superconductor Corp. ($AMSC), sold about $5.2 million in shares on the open market nine times over the past year. His most recent sale occurred on August 4, 2025. These transactions rank 1,874th among 11,678 insiders, trailing the average of $8.6 million across roughly 6.4 sales. No open market purchases were recorded.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug. 4, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 34260 | $54.34 | 368,630.0000 | 45,564,000 | 8.50% | 0.08% |
| Aug. 4, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 15740 | $55.13 | 352,890.0000 | 45,564,000 | 4.27% | 0.03% |
| Aug. 4, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 9843 | $55.26 | 352,890.0000 | 45,564,000 | 2.71% | 0.02% |
| June 11, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 6342 | $28.55 | 412,996.0000 | 39,888,000 | 1.51% | 0.02% |
| June 11, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 300 | $29.08 | 412,696.0000 | 39,888,000 | 0.07% | 0.00% |
| June 6, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 4744 | $31.83 | 419,338.0000 | 39,888,000 | 1.12% | 0.01% |
| May 27, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 10097 | $25.55 | 463,898.0000 | 39,888,000 | 2.13% | 0.03% |
| May 27, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 39903 | $26.61 | 423,995.0000 | 39,888,000 | 8.60% | 0.10% |
| May 20, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 11860 | $24.50 | 473,995.0000 | 39,888,000 | 2.44% | 0.03% |
| May 15, 2025 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | A | Common Stock | 120000 | $0.00 | 485,855.0000 | 39,888,000 | 32.80% | 0.30% |
| Nov. 4, 2024 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 50000 | $28.28 | 365,494.0000 | 39,827,000 | 12.03% | 0.13% |
| Sept. 26, 2024 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | A | Common Stock | 90000 | $0.00 | 415,453.0000 | 37,399,000 | 27.65% | 0.24% |
| June 11, 2024 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 32000 | $21.68 | 325,255.0000 | 37,343,000 | 8.96% | 0.09% |
| May 21, 2024 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 26830 | $14.78 | 359,425.0000 | 37,343,000 | 6.95% | 0.07% |
| May 21, 2024 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 2170 | $15.30 | 357,255.0000 | 37,343,000 | 0.60% | 0.01% |
| June 21, 2023 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 50132 | $6.15 | 415,136.0000 | 29,937,000 | 10.77% | 0.17% |
| June 22, 2023 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | S | Common Stock | 29878 | $5.95 | 385,258.0000 | 29,937,000 | 7.20% | 0.10% |
| June 15, 2023 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | A | Common Stock | 105000 | $0.00 | 466,881.0000 | 29,937,000 | 29.02% | 0.35% |
| June 15, 2023 | AMERICAN SUPERCONDUCTOR CORP /DE/ | $AMSC | Kosiba John W JR | SVP, CFO & Treasurer | D | Common Stock | 1613 | $0.00 | 465,268.0000 | 29,937,000 | 0.35% | 0.01% |