John W. Kosiba Jr serves as Executive at AMERICAN SUPERCONDUCTOR CORP /DE/, where they oversee executive responsibilities. Since joining the company, John W. Kosiba Jr has executed 59 insider transactions totaling $7.3M, demonstrating a bearish approach to their equity position. Their most recent transaction on Aug 4, 2025 involved selling 15,740 shares valued at $867.7K.
John W. Kosiba Jr currently holds 352,890 shares of AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, John W. Kosiba Jr has been a net seller of AMSC stock. They have purchased $184.1K and sold $7.1M worth of shares.
John W. Kosiba Jr's most recent insider trade was on Aug 4, 2025, when they sold 15,740 shares at $55.13 per share.
Get notified when new Form 4 filings are submitted
| $54.34 |
| Discretionary |
| Aug 4, 2025 | AMSC | $543.9K | Sale | 9,843 | $55.26 | Discretionary |
| Sep 26, 2024 | AMSC | $0 | Award | 90,000 | $N/A | Discretionary |
| Jun 11, 2024 | AMSC | $693.8K | Sale | 32,000 | $21.68 | Planned |
| May 21, 2024 | AMSC | $396.5K | Sale | 26,830 | $14.78 | Planned |
| May 21, 2024 | AMSC | $33.2K | Sale | 2,170 | $15.30 | Planned |
| Jun 22, 2023 | AMSC | $177.8K | Sale | 29,878 | $5.95 | Planned |
| Jun 21, 2023 | AMSC | $308.3K | Sale | 50,132 | $6.15 | Planned |
| Jun 15, 2023 | AMSC | $0 | Disposition | 1,613 | $N/A | Discretionary |
| Jun 15, 2023 | AMSC | $0 | Award | 105,000 | $N/A | Discretionary |
| Dec 16, 2022 | AMSC | $52.5K | Purchase | 15,000 | $3.50 | Discretionary |
| Dec 12, 2022 | AMSC | $83.5K | Purchase | 25,000 | $3.34 | Discretionary |
| Oct 19, 2022 | AMSC | $0 | Award | 125,000 | $N/A | Discretionary |
| Jun 10, 2022 | AMSC | $50.6K | Sale | 8,473 | $5.97 | Discretionary |
| May 31, 2022 | AMSC | $72.6K | Sale | 13,325 | $5.45 | Discretionary |
| Dec 10, 2021 | AMSC | $257.3K | Sale | 22,754 | $11.31 | Discretionary |
| Nov 2, 2021 | AMSC | $5.0K | Sale | 259 | $19.31 | Discretionary |
| Nov 2, 2021 | AMSC | $131.1K | Sale | 6,983 | $18.77 | Discretionary |
| Nov 1, 2021 | AMSC | $71.4K | Sale | 3,766 | $18.95 | Discretionary |
| Aug 5, 2021 | AMSC | $149.8K | Award | 11,943 | $12.54 | Discretionary |
| Jul 1, 2021 | AMSC | $113.2K | Sale | 6,409 | $17.66 | Discretionary |
| May 24, 2021 | AMSC | $82.2K | Sale | 5,794 | $14.18 | Discretionary |
| May 20, 2021 | AMSC | $0 | Award | 30,000 | $N/A | Discretionary |
| Jan 21, 2021 | AMSC | $298.8K | Sale | 10,661 | $28.03 | Discretionary |
| Jan 21, 2021 | AMSC | $162.0K | Sale | 6,100 | $26.56 | Discretionary |
| Jan 21, 2021 | AMSC | $230.5K | Sale | 8,333 | $27.66 | Discretionary |
| Nov 25, 2020 | AMSC | $482.0K | Sale | 25,000 | $19.28 | Discretionary |
| Nov 1, 2020 | AMSC | $101.8K | Payment | 7,321 | $13.91 | Discretionary |
| Oct 31, 2020 | AMSC | $52.5K | Payment | 3,774 | $13.91 | Discretionary |