John W Jr Kosiba Net Worth
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John W Jr Kosiba has an estimated net worth of at least $25.0 million*, as of June 10, 2026. They own 342,695 shares of AMSC stock. They have sold 384,261 shares of AMSC stock since 2021, for an estimated $8.6 million.
John W Jr Kosiba $AMSC SEC Form 4 Insider Trading
John W Jr Kosiba has filed a total of 24 insider trades in $AMSC since 2021. Their most recent trade was a sale of 3,286 shares, made on Jun 08, 2026. Their largest trade was a sale of 50,132 shares, made on Jun 21, 2023. We estimate that they now own 342,695 shares of $AMSC, worth an estimated $16.4 million.
Insider Trading at $AMSC
There have been a total of 60 insider trades reported at $AMSC since 2021, with 65,700 shares purchased and 1.0 million shares sold. The most active insider traders in $AMSC stock have been Daniel P Mcgahn, John W Jr Kosiba, and . The most recent trade was a sale of 4,000 shares reported by Laura A. Dambier (None), made on Jun 11, 2026.
History of Insider Stock Trades by John W Jr Kosiba
| Company Ticker | Purchase / Sale | Shares | Date | Disclosed (EST) |
|---|---|---|---|---|
AMSC
|
Sale | 3,286 | Jun 08, 2026 | June 10, 2026, 4:55 p.m. |
|
AMSC
|
Sale | 1,549 | Jun 08, 2026 | June 10, 2026, 4:55 p.m. |
|
AMSC
|
Sale | 9,843 | Aug 04, 2025 | Aug. 6, 2025, 4:29 p.m. |
|
AMSC
|
Sale | 34,260 | Aug 04, 2025 | Aug. 6, 2025, 4:29 p.m. |
|
AMSC
|
Sale | 15,740 | Aug 04, 2025 | Aug. 6, 2025, 4:29 p.m. |
|
AMSC
|
Sale | 4,744 | Jun 06, 2025 | June 9, 2025, 4:57 p.m. |
|
AMSC
|
Sale | 10,097 | May 27, 2025 | May 29, 2025, 5:22 p.m. |
|
AMSC
|
Sale | 39,903 | May 27, 2025 | May 29, 2025, 5:22 p.m. |
|
AMSC
|
Sale | 11,860 | May 20, 2025 | May 22, 2025, 4:47 p.m. |
|
AMSC
|
Sale | 50,000 | Nov 04, 2024 | Nov. 6, 2024, 5:38 p.m. |
|
AMSC
|
Sale | 32,000 | Jun 11, 2024 | June 12, 2024, 9:08 a.m. |
|
AMSC
|
Sale | 2,170 | May 21, 2024 | May 23, 2024, 4:33 p.m. |
|
AMSC
|
Sale | 26,830 | May 21, 2024 | May 23, 2024, 4:33 p.m. |
|
AMSC
|
Sale | 50,132 | Jun 21, 2023 | June 23, 2023, 4:15 p.m. |
|
AMSC
|
Sale | 29,878 | Jun 22, 2023 | June 23, 2023, 4:15 p.m. |
|
AMSC
|
Purchase | 15,000 | Dec 16, 2022 | Dec. 19, 2022, 5:18 p.m. |
|
AMSC
|
Purchase | 25,000 | Dec 12, 2022 | Dec. 13, 2022, 5:17 p.m. |
|
AMSC
|
Sale | 8,473 | Jun 10, 2022 | June 13, 2022, 4:43 p.m. |
|
AMSC
|
Sale | 13,325 | May 31, 2022 | June 2, 2022, 5:36 p.m. |
|
AMSC
|
Sale | 22,754 | Dec 10, 2021 | Dec. 13, 2021, 5:53 p.m. |
|
AMSC
|
Sale | 6,983 | Nov 02, 2021 | Nov. 1, 2021, 8 p.m. |
|
AMSC
|
Sale | 259 | Nov 02, 2021 | Nov. 1, 2021, 8 p.m. |
|
AMSC
|
Sale | 3,766 | Nov 01, 2021 | Nov. 1, 2021, 8 p.m. |
|
AMSC
|
Sale | 6,409 | Jul 01, 2021 | July 5, 2021, 8 p.m. |
$AMSC Executives and Stock Owners with Insider Trades
-
Daniel P Mcgahn, Chairman, President and CEO
-
John W Jr Kosiba, SVP, CFO & Treasurer
*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.