John W Jr Kosiba Net Worth
Track Major Insider Updates On X/TwitterLast Updated: 3 days, 3 hours ago
John W Jr Kosiba has an estimated net worth of at least $30.2 million*, as of Aug. 27, 2025. They own 409,532 shares of AMSC stock. They have sold 379,426 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 22 insider trades in $AMSC since 2021. Their most recent trade was a sale of 34,260 shares, made on Aug 04, 2025. Their largest trade was a sale of 50,132 shares, made on Jun 21, 2023. We estimate that they now own 409,532 shares of $AMSC, worth an estimated $21.5 million.
Insider Trading at $AMSC
There have been a total of 43 insider trades reported at $AMSC since 2021, with 65,500 shares purchased and 893,596 shares sold. The most active insider traders in $AMSC stock have been John W Jr Kosiba, Daniel P Mcgahn, and . The most recent trade was a sale of 9,703 shares reported by Arthur H House (None), made on Aug 08, 2025.
History of Insider Stock Trades by John W Jr Kosiba
| Company Ticker | Purchase / Sale | Shares | Date | Disclosed (EST) |
|---|---|---|---|---|
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 | 9,843 | 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 | 39,903 | May 27, 2025 | May 29, 2025, 5:22 p.m. |
|
AMSC
|
Sale | 10,097 | 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 | 29,878 | Jun 22, 2023 | June 23, 2023, 4:15 p.m. |
|
AMSC
|
Sale | 50,132 | Jun 21, 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 | 3,766 | Nov 01, 2021 | Nov. 1, 2021, 8 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 | 6,409 | Jul 01, 2021 | July 5, 2021, 8 p.m. |
$AMSC Executives and Stock Owners with Insider Trades
-
John W Jr Kosiba, SVP, CFO & Treasurer
-
Daniel P Mcgahn, Chairman, President and CEO
*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.