Skip to content
drillr.ai
Sign up

AMSC

American Superconductor Corporation

NASDAQ · Industrials · Industrial - Machinery · US

$29.55
+1.86%
Ask drillr
0
Insider buys (3m)
9
Insider sells (3m)
-$1.6M
Net value (3m)
-30.2%
Price return (3m)
Form 4 filings
DateInsiderActivitySharesPrice
Jun 12, 2026Dambier Laura A. · directorSale4,000$38
Jun 11, 2026Kosiba John W JR · officer: SVP, CFO & TreasurerSale5,026$37
Jun 11, 2026McGahn Daniel P · director, officer: Chairman, President and CEOSale11,508$37
Jun 11, 2026McGahn Daniel P · director, officer: Chairman, President and CEOSale4,609$38
Jun 11, 2026Kosiba John W JR · officer: SVP, CFO & TreasurerSale1,743$38
Jun 10, 2026McGahn Daniel P · director, officer: Chairman, President and CEOSale4,678$42
Jun 10, 2026Kosiba John W JR · officer: SVP, CFO & TreasurerSale3,286$42
Jun 10, 2026Kosiba John W JR · officer: SVP, CFO & TreasurerSale1,549$42
Jun 10, 2026McGahn Daniel P · director, officer: Chairman, President and CEOSale4,992$41
Apr 7, 2026Donnelly Terence Robert · directorA-Award2,665$0.00
Apr 7, 2026OLIVER DAVID R JR · directorA-Award3,116$0.00
Apr 7, 2026Littlefield Barbara G. · directorA-Award3,116$0.00
Apr 7, 2026House Arthur H · directorA-Award3,116$0.00
Apr 7, 2026Klein Margaret D. · directorA-Award3,116$0.00
Apr 7, 2026Dambier Laura A. · directorA-Award3,116$0.00
Feb 26, 2026OLIVER DAVID R JR · directorSale200$34
Nov 13, 2025OLIVER DAVID R JR · directorPurchase200$8.33
Aug 8, 2025House Arthur H · directorSale9,703$51
Aug 8, 2025House Arthur H · directorM-Exempt9,703$6.80
Aug 6, 2025Kosiba John W JR · officer: SVP, CFO & TreasurerSale34,260$54
Aug 6, 2025McGahn Daniel P · director, officer: Chairman, President and CEOSale27,743$55
Aug 6, 2025McGahn Daniel P · director, officer: Chairman, President and CEOSale73,105$54
Aug 6, 2025Klein Margaret D. · directorPurchase500$5.57
Aug 6, 2025Kosiba John W JR · officer: SVP, CFO & TreasurerSale9,843$55
Aug 6, 2025Kosiba John W JR · officer: SVP, CFO & TreasurerSale15,740$55
Jun 12, 2025Kosiba John W JR · officer: SVP, CFO & TreasurerSale6,342$29
Jun 12, 2025McGahn Daniel P · director, officer: Chairman, President and CEOSale12,315$29
Jun 12, 2025Kosiba John W JR · officer: SVP, CFO & TreasurerSale300$29
Jun 12, 2025McGahn Daniel P · director, officer: Chairman, President and CEOSale500$29
Jun 9, 2025McGahn Daniel P · director, officer: Chairman, President and CEOSale7,689$32
Institutional positioning

13F filings over the trailing two quarters

New 124Increased 208Reduced 146Sold out 34
FilerActionSharesFiled
BlackRock, Inc.Increased4,095,371Aug 7, 2026
BLACKROCK, INC.Increased3,982,650May 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position2,039,468May 15, 2026
VANGUARD CAPITAL MANAGEMENT LLCReduced2,034,219Aug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position1,711,677May 8, 2026
BARROW HANLEY MEWHINNEY & STRAUSS LLCIncreased1,704,006Aug 12, 2026
BAILLIE GIFFORD & COReduced1,447,419May 8, 2026
UBS Group AGIncreased1,429,090Aug 13, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCReduced1,418,863Aug 13, 2026
STATE STREET CORPIncreased1,358,225Aug 7, 2026
GOLDMAN SACHS GROUP INCIncreased1,294,047Aug 14, 2026
STATE STREET CORPIncreased1,261,071May 15, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased1,243,198Aug 12, 2026
GEODE CAPITAL MANAGEMENT, LLCIncreased1,169,152May 15, 2026
FIRST TRUST ADVISORS LPIncreased1,168,424Aug 11, 2026

Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jun 12, 2026