AMSC- American Superconductor Corporation

Name: American Superconductor Corporation Insider Trading Data
Creator: U.S. Securities and Exchange Commission
License: https://www.sec.gov/privacy#accessibility

AMSC sits in the Machinery industry within the Industrials sector, so this activity is best read against the sector's broader insider trend.

Compare Industrials sector insider flows →

Insider Ownership

Role	Insider	Shares	Value	30d
CEO	McGahn Daniel P	1.13M	$42.84M	-
CFO	Kosiba John W Jr	336.1K	$12.55M	-
Dir	Oliver David R Jr	63.8K	-	-
Dir	House Arthur H	51.8K	-	-
Dir	Littlefield Barbara G.	37.0K	-	-

Activity

Buys and sells only

Transactions

10 filings

Date	Insider	Role	Type	Shares	Price	Value	Chg%	3M	12M
Jun 11, 2026	McGahn Daniel P53	Chairman, President And CEO	Sell	16,117	$37.45	$603,502.73	-1.4%	-	-
Jun 11, 2026	Kosiba John W Jr61	SVP, CFO &Treasurer	Sell	6,769	$37.46	$253,579.33	-2.0%	-	-
Jun 11, 2026	Dambier Laura A.	Director	Sell	4,000	$37.63	$150,520.00	-21.1%	-	-
Jun 8, 2026	Kosiba John W Jr61	SVP, CFO &Treasurer	Sell	4,835	$41.77	$201,966.80	-1.4%	-	-
Jun 8, 2026	McGahn Daniel P53	Chairman, President And CEO	Sell	9,670	$41.78	$403,995.58	-0.8%	-	-
Jun 3, 2026	Kosiba John W Jr61	SVP, CFO &Treasurer	Sell	36,909	$50.45	$1,862,034.20	-9.6%	-	-
Jun 3, 2026	McGahn Daniel P53	Chairman, President And CEO	Sell	85,418	$50.49	$4,313,153.86	-6.9%	-	-
Aug 8, 2025	House Arthur H	Director	Sale+OE	9,703	$50.92	$494,081.61	-16.6%	-28.3%	-
Aug 4, 2025	Kosiba John W Jr61	SVP, CFO &Treasurer	Sell	59,843	$54.70	$3,273,380.45	-100%	+9.2%	-47.1%
Aug 4, 2025	McGahn Daniel P53	Chairman, President And CEO	Sell	100,848	$54.49	$5,495,526.17	-7.9%	+9.2%	-47.1%

Understand these filings

How to Read SEC Form 4 Filings →Understanding Insider Buying Signals →What is Insider Trading? A Complete Guide →Cluster Buying: When Multiple Insiders Buy Together →

Insider	Role	Shares	Value	Buys	Sells

Date	Ticker	Insider	Role	Type	Shares	Price	Value	Chg%	SEC