Insider Trading for AMSC
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
No insider transactions in the past 30 days.
Quarterly Activity (3 Months)
Acquisitions: 0 shares
Dispositions: 41.4K shares
Net: -41.4K shares
Insiders have been net sellers over the quarter, which institutional investors may view as a cautionary signal.
Key Insider Activity: Jun 18, 2019 to Jun 11, 2026
McGahn Daniel P
ExecutiveChief Executive Officer
+463.2K shares
27 transactions
Kosiba John W JR
ExecutiveChief Financial Officer
+99.1K shares
33 transactions
House Arthur H
DirectorDirector
+17.6K shares
8 transactions
Dambier Laura A.
DirectorDirector
+25.3K shares
7 transactions
Donnelly Terence Robert
DirectorDirector
+4.8K shares
3 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jun 11, 2026 | Dambier Laura A. | DDirector | Sale | 4.0K | $37.63 | $150,520.00 | 15.0K | View |
| Jun 11, 2026 | Kosiba John W JR | EChief Financial Officer | Sale | 5.0K | $37.33 | $187,603.99 | 336.1K | View |
| Jun 11, 2026 | Kosiba John W JR | EChief Financial Officer | Sale | 1.7K | $37.85 | $65,975.34 | 334.4K | View |
Jun 11, 2026 | Locked | — | — | — | — | — | — | — |
Jun 11, 2026 | Locked | — | — | — | — | — | — | — |
Jun 8, 2026 | Locked | — | — | — | — | — | — | — |
Jun 8, 2026 | Locked | — | — | — | — | — | — | — |
Jun 8, 2026 | Locked | — | — | — | — | — | — | — |
Jun 8, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Apr 3, 2026 | Locked | — | — | — | — | — | — | — |
Feb 24, 2026 | Locked | — | — | — | — | — | — | — |
Aug 8, 2025 | Locked | — | — | — | — | — | — | — |
Aug 6, 2025 | Locked | — | — | — | — | — | — | — |
Aug 6, 2025 | Locked | — | — | — | — | — | — | — |
Aug 4, 2025 | Locked | — | — | — | — | — | — | — |
Aug 4, 2025 | Locked | — | — | — | — | — | — | — |
Aug 4, 2025 | Locked | — | — | — | — | — | — | — |
Aug 4, 2025 | Locked | — | — | — | — | — | — | — |
Aug 4, 2025 | Locked | — | — | — | — | — | — | — |
Jun 11, 2025 | Locked | — | — | — | — | — | — | — |
Jun 11, 2025 | Locked | — | — | — | — | — | — | — |
Jun 11, 2025 | Locked | — | — | — | — | — | — | — |
Jun 11, 2025 | Locked | — | — | — | — | — | — | — |
Jun 6, 2025 | Locked | — | — | — | — | — | — | — |
Jun 6, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 27, 2025 | Locked | — | — | — | — | — | — | — |
May 20, 2025 | Locked | — | — | — | — | — | — | — |
May 20, 2025 | Locked | — | — | — | — | — | — | — |
May 15, 2025 | Locked | — | — | — | — | — | — | — |
May 15, 2025 | Locked | — | — | — | — | — | — | — |
Apr 3, 2025 | Locked | — | — | — | — | — | — | — |
Apr 3, 2025 | Locked | — | — | — | — | — | — | — |
Apr 3, 2025 | Locked | — | — | — | — | — | — | — |
Apr 3, 2025 | Locked | — | — | — | — | — | — | — |
Apr 3, 2025 | Locked | — | — | — | — | — | — | — |
Nov 4, 2024 | Locked | — | — | — | — | — | — | — |
Sep 30, 2024 | Locked | — | — | — | — | — | — | — |
Sep 26, 2024 | Locked | — | — | — | — | — | — | — |
Jun 11, 2024 | Locked | — | — | — | — | — | — | — |
Jun 11, 2024 | Locked | — | — | — | — | — | — | — |
May 21, 2024 | Locked | — | — | — | — | — | — | — |
May 21, 2024 | Locked | — | — | — | — | — | — | — |
May 21, 2024 | Locked | — | — | — | — | — | — | — |
May 21, 2024 | Locked | — | — | — | — | — | — | — |
Apr 3, 2024 | Locked | — | — | — | — | — | — | — |
Apr 3, 2024 | Locked | — | — | — | — | — | — | — |
Apr 3, 2024 | Locked | — | — | — | — | — | — | — |
Apr 3, 2024 | Locked | — | — | — | — | — | — | — |
Apr 3, 2024 | Locked | — | — | — | — | — | — | — |
Jun 22, 2023 | Locked | — | — | — | — | — | — | — |
Jun 22, 2023 | Locked | — | — | — | — | — | — | — |
Jun 21, 2023 | Locked | — | — | — | — | — | — | — |
Jun 21, 2023 | Locked | — | — | — | — | — | — | — |
Jun 15, 2023 | Locked | — | — | — | — | — | — | — |
Jun 15, 2023 | Locked | — | — | — | — | — | — | — |
Jun 15, 2023 | Locked | — | — | — | — | — | — | — |
Jun 15, 2023 | Locked | — | — | — | — | — | — | — |
Apr 5, 2023 | Locked | — | — | — | — | — | — | — |
Apr 5, 2023 | Locked | — | — | — | — | — | — | — |
Apr 5, 2023 | Locked | — | — | — | — | — | — | — |
Apr 5, 2023 | Locked | — | — | — | — | — | — | — |
Apr 5, 2023 | Locked | — | — | — | — | — | — | — |
Dec 16, 2022 | Locked | — | — | — | — | — | — | — |
Dec 16, 2022 | Locked | — | — | — | — | — | — | — |
Dec 12, 2022 | Locked | — | — | — | — | — | — | — |
Oct 31, 2022 | Locked | — | — | — | — | — | — | — |
Oct 19, 2022 | Locked | — | — | — | — | — | — | — |
Aug 4, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
Jun 10, 2022 | Locked | — | — | — | — | — | — | — |
May 31, 2022 | Locked | — | — | — | — | — | — | — |
May 31, 2022 | Locked | — | — | — | — | — | — | — |
Apr 5, 2022 | Locked | — | — | — | — | — | — | — |
Apr 5, 2022 | Locked | — | — | — | — | — | — | — |
Apr 5, 2022 | Locked | — | — | — | — | — | — | — |
Apr 5, 2022 | Locked | — | — | — | — | — | — | — |
Dec 10, 2021 | Locked | — | — | — | — | — | — | — |
Dec 8, 2021 | Locked | — | — | — | — | — | — | — |
Nov 2, 2021 | Locked | — | — | — | — | — | — | — |
Nov 2, 2021 | Locked | — | — | — | — | — | — | — |
Nov 1, 2021 | Locked | — | — | — | — | — | — | — |
Nov 1, 2021 | Locked | — | — | — | — | — | — | — |
Aug 5, 2021 | Locked | — | — | — | — | — | — | — |
Aug 5, 2021 | Locked | — | — | — | — | — | — | — |
Jun 18, 2019 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of AMSC stock, which is typically a strong positive signal.