Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

AMERICAN SUPERCONDUCTOR CORP /DE/

AMSC · Nasdaq · CIK 0000880807 · Industrials · Specialty Industrial Machinery

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

27 Form 4 transaction lines observed in the same window
24 sales · 3 option, withholding, award, gift or other lines

Last qualifying purchase2022-12-16 · McGahn Daniel P · $87.2K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesHigh
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Kosiba John W JRSVP, CFO & Treasurer
○▼▼▼▼
McGahn Daniel PChairman, President and CEO
○▼▼▼▼
Dambier Laura A.Director
▼
Littlefield Barbara G.Director
○
● Purchase▼ Sale○ Other

—

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2022-12-16 · McGahn Daniel P.

Recent Form 4 activity

0Purchases
25Sales
9Other Form 4 lines
15SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING24 sale line(s) · context only
OTHER3 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
+5.3%
3M
-21.3%
6M
-6.5%
12M
—

Volatility & liquidity

Volatility
81.1%
Beta
3.27
Avg daily value
USD 21.4M

Valuation

Market cap
USD 1.5B
P/E
9.7×

Fundamentals

Profit margin
44.7%
ROE
24.1%
Industry
Specialty Industrial Machinery

Market data

Price data up to: 2026-10-03 · Price source: OpenBB/yfinance · From SEC filings: Profit margin, ROE · Fiscal year ended: 2026-03-31 · From Yahoo Finance: Market cap, P/E · Status: PASS

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
3,895,546
Previous report
3,929,693
Avg daily volume
724,860
Days to cover
5.4

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2022-12-16McGahn Daniel PPurchase (P)Common Stock25,000USD 3.49USD 87,250SEC filing ↗
2022-12-16Kosiba John W JRPurchase (P)Common Stock15,000USD 3.50USD 52,500SEC filing ↗
2022-12-12Kosiba John W JRPurchase (P)Common Stock25,000USD 3.34USD 83,500SEC filing ↗
2022-08-04Klein Margaret D.Purchase (P)Common Stock500USD 5.57USD 2,785SEC filing ↗

Form 4 evidence

34 transaction lines in the latest 365-day window; 141 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Littlefield Barbara G.Award / grant (A)Common Stock1,607USD 0.00USD 0SEC filing ↗
2026-06-11Dambier Laura A.Sale (S)Common Stock4,000USD 37.63USD 150,520SEC filing ↗
2026-06-11McGahn Daniel PSale (S)Common Stock16,117USD 37.44USD 603,469SEC filing ↗
Show recent Form 4 evidence (19 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-18Littlefield Barbara G.Award / grant (A)Common Stock1,607USD 0.00USD 0SEC filing ↗
2026-06-11Dambier Laura A.Sale (S)Common Stock4,000USD 37.63USD 150,520SEC filing ↗
2026-06-11McGahn Daniel PSale (S)Common Stock16,117USD 37.44USD 603,469SEC filing ↗
2026-06-11Kosiba John W JRSale (S)Common Stock6,769USD 37.46USD 253,593SEC filing ↗
2026-06-08McGahn Daniel PSale (S)Common Stock9,670USD 41.78USD 403,984SEC filing ↗
2026-06-08Kosiba John W JRSale (S)Common Stock4,835USD 41.77USD 201,969SEC filing ↗
2026-06-03McGahn Daniel PSale (S)Common Stock12,893USD 48.88USD 630,271SEC filing ↗
2026-06-03Kosiba John W JRSale (S)Common Stock6,447USD 48.94USD 315,548SEC filing ↗
2026-06-02McGahn Daniel PSale (S)Common Stock72,525USD 50.78USD 3,682,885SEC filing ↗
2026-06-02Kosiba John W JRSale (S)Common Stock30,462USD 50.77USD 1,546,542SEC filing ↗
2026-06-01McGahn Daniel PAward / grant (A)Common Stock60,000USD 0.00USD 0SEC filing ↗
2026-06-01Kosiba John W JRAward / grant (A)Common Stock30,000USD 0.00USD 0SEC filing ↗
2026-04-03OLIVER DAVID R JRAward / grant (A)Common Stock3,116USD 0.00USD 0SEC filing ↗
2026-04-03Littlefield Barbara G.Award / grant (A)Common Stock3,116USD 0.00USD 0SEC filing ↗
2026-04-03Klein Margaret D.Award / grant (A)Common Stock3,116USD 0.00USD 0SEC filing ↗
2026-04-03House Arthur HAward / grant (A)Common Stock3,116USD 0.00USD 0SEC filing ↗
2026-04-03Donnelly Terence RobertAward / grant (A)Common Stock2,665USD 0.00USD 0SEC filing ↗
2026-04-03Dambier Laura A.Award / grant (A)Common Stock3,116USD 0.00USD 0SEC filing ↗
2026-02-24OLIVER DAVID R JRSale (S)Common Stock200USD 34.10USD 6,820SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerAMSC
CIK0000880807
SectorIndustrials
IndustrySpecialty Industrial Machinery Yahoo Finance
SEC SIC3621 Motors & Generators
ExchangeNasdaq

Data coverage

Local Form 4 history141 transaction lines from 2020-04-03 to 2026-09-18
4 P purchase lines · 72 S sale lines · 65 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.