There have been 50 recent insider transactions recorded for American Superconductor Corporation (AMSC), including 25 buys and 24 sells. Total insider buying was valued at $280.97K and total insider selling at $11.47M.
Notable insiders with recent activity include Oliver David R Jr, House Arthur H, Mcgahn Daniel P. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — AMSC
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-02-24 |
Oliver David R Jr |
Director |
Informative Sell |
200 |
$34.10 |
$6.82K |
60,707 |
| 2025-08-08 |
House Arthur H |
Director |
Informative Sell |
9,703 |
$50.92 |
$494.08K |
48,663 |
| 2025-08-06 |
House Arthur H |
Director |
Option Exercise (Sell) |
9,703 |
$6.80 |
$65.98K |
- |
| 2025-08-04 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
27,743 |
$55.11 |
$1.53M |
1,183,134 |
| 2025-08-04 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
9,843 |
$55.26 |
$543.92K |
- |
| 2025-06-11 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
500 |
$29.09 |
$14.55K |
1,283,982 |
| 2025-06-11 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
300 |
$29.08 |
$8.72K |
402,890 |
| 2025-06-06 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
7,689 |
$31.82 |
$244.67K |
1,296,797 |
| 2025-06-06 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
4,744 |
$31.83 |
$151.01K |
409,532 |
| 2025-05-27 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
98,149 |
$26.60 |
$2.61M |
1,304,486 |
| 2025-05-27 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
39,903 |
$26.61 |
$1.06M |
414,276 |
| 2025-05-27 |
Donnelly Terence Robert |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-05-27 |
Donnelly Terence Robert |
Director |
RSU Award |
2,112 |
$27.38 |
$57.83K |
2,112 |
| 2025-05-20 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
12,815 |
$24.49 |
$313.88K |
1,427,141 |
| 2025-05-20 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
11,860 |
$24.50 |
$290.53K |
464,276 |
| 2025-05-15 |
Mcgahn Daniel P |
Chairman, President and CEO |
RSU Award |
240,000 |
- |
- |
1,439,956 |
| 2025-05-15 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
RSU Award |
120,000 |
- |
- |
476,136 |
| 2025-04-03 |
Oliver David R Jr |
Director |
RSU Award |
2,639 |
- |
- |
60,707 |
| 2025-04-03 |
House Arthur H |
Director |
RSU Award |
2,639 |
- |
- |
48,663 |
| 2025-04-03 |
Littlefield Barbara G. |
Director |
RSU Award |
2,639 |
- |
- |
32,311 |
| 2025-04-03 |
Dambier Laura A. |
Director |
RSU Award |
2,639 |
- |
- |
15,876 |
| 2025-04-03 |
Klein Margaret D. |
Director |
RSU Award |
2,639 |
- |
- |
15,876 |
| 2024-11-04 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
50,000 |
$28.28 |
$1.41M |
356,136 |
| 2024-09-30 |
Mcgahn Daniel P |
Chairman, President and CEO |
RSU Award |
180,000 |
- |
- |
1,199,956 |
| 2024-09-26 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
RSU Award |
90,000 |
- |
- |
406,136 |
| 2024-06-11 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
37,165 |
$21.69 |
$806.05K |
1,019,956 |
| 2024-06-11 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
32,000 |
$21.68 |
$693.75K |
316,136 |
| 2024-05-21 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
1,620 |
$15.30 |
$24.79K |
1,057,121 |
| 2024-05-21 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
2,170 |
$15.30 |
$33.2K |
348,136 |
| 2024-04-03 |
Oliver David R Jr |
Director |
RSU Award |
3,840 |
- |
- |
58,068 |
| 2024-04-03 |
House Arthur H |
Director |
RSU Award |
3,840 |
- |
- |
46,024 |
| 2024-04-03 |
Littlefield Barbara G. |
Director |
RSU Award |
3,840 |
- |
- |
29,672 |
| 2024-04-03 |
Dambier Laura A. |
Director |
RSU Award |
3,840 |
- |
- |
13,237 |
| 2024-04-03 |
Klein Margaret D. |
Director |
RSU Award |
3,840 |
- |
- |
13,237 |
| 2023-06-22 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
36,902 |
$5.95 |
$219.6K |
1,077,680 |
| 2023-06-22 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
29,878 |
$5.95 |
$177.82K |
377,136 |
| 2023-06-21 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Sell |
73,802 |
$6.14 |
$453.35K |
1,114,582 |
| 2023-06-21 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Sell |
50,132 |
$6.15 |
$308.53K |
407,014 |
| 2023-06-15 |
Mcgahn Daniel P |
Chairman, President and CEO |
Return of Shares |
4,839 |
- |
- |
1,188,384 |
| 2023-06-15 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Return of Shares |
1,613 |
- |
- |
457,146 |
| 2023-04-05 |
Oliver David R Jr |
Director |
RSU Award |
11,627 |
- |
- |
54,228 |
| 2023-04-05 |
House Arthur H |
Director |
RSU Award |
11,627 |
- |
- |
42,184 |
| 2023-04-05 |
Littlefield Barbara G. |
Director |
RSU Award |
11,627 |
- |
- |
25,832 |
| 2023-04-05 |
Dambier Laura A. |
Director |
RSU Award |
9,397 |
- |
- |
9,397 |
| 2023-04-05 |
Klein Margaret D. |
Director |
RSU Award |
9,397 |
- |
- |
9,397 |
| 2022-12-16 |
Mcgahn Daniel P |
Chairman, President and CEO |
Informative Buy |
25,000 |
$3.49 |
$87.27K |
943,223 |
| 2022-12-16 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Buy |
15,000 |
$3.50 |
$52.47K |
353,759 |
| 2022-12-12 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
Informative Buy |
25,000 |
$3.34 |
$83.4K |
338,759 |
| 2022-10-31 |
Mcgahn Daniel P |
Chairman, President and CEO |
RSU Award |
250,000 |
- |
- |
918,223 |
| 2022-10-19 |
Kosiba John W Jr |
SVP, CFO & Treasurer |
RSU Award |
125,000 |
- |
- |
313,759 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
