AMSC at a glance
AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC, SEC CIK 880807) filed its latest 10-K annual report on May 27, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 21, 2026 and Form 4 insider filings as recently as September 21, 2026. SignalX summarizes each filing with AI and tracks the company's insider trades and institutional holders.
- For the fiscal year ended March 31, 2026 (FY2026), AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) reported revenue of $299.2 million (up 34.3% from FY2025) and net income of $133.8 million. Diluted EPS was $3.05.
- As of June 30, 2026, 29 institutional investment managers tracked by SignalX reported holding AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) shares worth $583.1 million in 13F-HR filings.
- The most recent insider open-market sale reported on Form 4 was by McGahn Daniel P on June 11, 2026 of 4,609 shares at $37.85 per share.
Source: SEC EDGAR (XBRL financial data, 13F-HR and Form 4 filings).
- Revenue · FY2026
- $299.2M
- +34.3% vs prior year
- Insiders · 90 days
- 0 buys · 0 sells
- No open-market trades
- 13F holders
- 29 funds
- $583.1M · −1 vs prior quarter
- Latest 8-K
- Sep 21, 2026
- Item 5.02
AI 10-Q Quarterly Report Analysis
Latest 10-Q, quarter ended Jun 30, 2026
Management Discussion & Analysis
- Revenue $94.1M, up 30% YoY from $72.4M, driven by Comtrafo and additional ECS shipments
- Gross margin 26% vs 34% YoY; net income $9.5M vs $6.7M
- Wind best performer: revenue $17.8M, up 45%; operating income $3.9M vs $1.5M
- Grid weakest: operating loss $2.2M vs $4.2M operating income, affected by lower margins and purchase accounting
- Cash $153.1M vs $147.6M; operating cash flow $16.0M vs $4.1M; $10.5M investing outflow for property, plant and equipment
Risk Factors
- No risk-factors section provided in the submitted filing text
- No disclosed new, changed, regulatory, operational, competitive, or financial risks available for comparison with the 10-K
AI summary of the AMSC 10-Q filed . Generated from the filing text; verify against the original.View on SEC EDGAR10-K vs 10-Q vs 8-K
AI 8-K Current Report Analysis
The most recent material events, by 8-K item
Item 5.02: Departure/Appointment of Directors or Principal Officers
- Barbara G. Littlefield resigned from AMSC’s Board effective September 18, 2026
- Board departure creates a governance vacancy and may affect committee composition
Item 2.02: Results of Operations and Financial Condition
- Item 2.02 contains only a non-incorporation disclaimer
- No earnings figures, reporting period, or operating results provided in the excerpt
Item 5.07: Submission of Matters to a Vote of Security Holders
- 36.6M shares represented, or approximately 75.5% of outstanding shares, indicating strong meeting participation
- All seven director nominees elected, with withheld votes ranging from 319,576 to 1,873,646
Item 5.02: Departure/Appointment of Directors or Principal Officers
- Fiscal 2026 incentive plan links executive payouts to non-GAAP net income, revenue, and operating expenses
- Non-GAAP net income carries 50% weighting; revenue and operating expenses each carry 25%
AI summaries of AMSC 8-K current reports filed with the SEC. What 8-K item codes mean
SignalX for AMSC
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Recent Insider Transactions (Form 4)
Latest reported trades by officers, directors and 10% owners
| Insider | Type | Date | Shares | Price |
|---|---|---|---|---|
| Littlefield Barbara G. | A | Sep 18, 2026 | 1,607 | - |
| McGahn Daniel P | Sell | Jun 11, 2026 | 4,609 | $37.85 |
| Dambier Laura A. | Sell | Jun 11, 2026 | 4,000 | $37.63 |
| Kosiba John W JR | Sell | Jun 11, 2026 | 5,026 | $37.33 |
| Kosiba John W JR | Sell | Jun 11, 2026 | 1,743 | $37.85 |
| McGahn Daniel P | Sell | Jun 11, 2026 | 11,508 | $37.28 |
| McGahn Daniel P | Sell | Jun 8, 2026 | 4,992 | $41.39 |
| McGahn Daniel P | Sell | Jun 8, 2026 | 4,678 | $42.19 |
Financial SummaryXBRL
| Metric | FY2024 | FY2025 | FY2026 |
|---|---|---|---|
| Profitability | |||
| Revenue | - | $222.8M | $299.2M |
| Gross Profit | - | $61.9M | $91.4M |
| Operating Income | - | -$1.1M | $11.4M |
| Net Income | - | $6.0M | $133.8M |
| Gross Margin | - | 27.8% | 30.5% |
| Op. Margin | - | -0.5% | 3.8% |
| Net Margin | - | 2.7% | 44.7% |
| Balance Sheet | |||
| Total Assets | $232.8M | $310.5M | $739.5M |
| Equity | - | $197.1M | $555.4M |
| ROE | - | 3.1% | 24.1% |
| Per Share | |||
| EPS | - | $0.16 | $3.05 |
| Cash Flow | |||
| Operating CF | - | $28.3M | $23.1M |
| CapEx | $934K | $2.4M | $4.9M |
Source: XBRL data in AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC)'s 10-K filings on SEC EDGAR, in USD. Compare across companies →
13F Fund Holdings: Quarterly Trend
Latest: Q2 2026Aggregate AMSC share value held by 13F filers tracked by SignalX, by quarter.
Quarterly totals table
| Quarter | Funds | Total value |
|---|---|---|
| Q2 2026 | 29 | $583.1M |
| Q1 2026 | 30 | $470.1M |
| Q4 2025 | 27 | $428.4M |
| Q3 2025 | 28 | $831.6M |
| Q2 2025 | 26 | $447.0M |
| Q1 2025 | 23 | $133.4M |
| Q4 2024 | 19 | $162.0M |
| Q3 2024 | 16 | $96.8M |
- Goldman Sachs Group+584.5K (+82%)
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- State Street Corp+97.2K (+8%)
- Ameriprise Financial+49.5K (+79%)
- Vanguard Portfolio Management LLC−292.8K (-17%)
- D.E. Shaw & Co−200.7K (-35%)
- Citadel Advisors LLC−196.2K (-91%)
- FMR LLC (Fidelity)−136.9K (-93%)
- Bank of America Corp−103.2K (-49%)
- Marex Group plc+6.9K
- Mangrove Partners−8.7K
- Fifth Third Bancorp−195
Source: 13F-HR filings on SEC EDGAR (aggregated from 198 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe. How 13F filings work
AMSC filing archive
AI analysis pages for each 10-K, 10-Q and 8-K
10-K annual reports
10-Q quarterly reports
8-K current reports
Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4
| Form | Filing date | Period | Analysis | SEC |
|---|---|---|---|---|
| 4 | Sep 21, 2026 | - | - | - |
| 8-K | Sep 21, 2026 | - | Analysis | - |
| 10-Q | Aug 5, 2026 | Jun 30, 2026 | Analysis | |
| 8-K | Aug 5, 2026 | - | Analysis | - |
| 4 | Jun 12, 2026 | - | - | - |
| 4 | Jun 11, 2026 | - | - | - |
| 4 | Jun 11, 2026 | - | - | - |
| 4 | Jun 10, 2026 | - | - | |
| 4 | Jun 10, 2026 | - | - | |
| 8-K | Jun 2, 2026 | - | Analysis | |
| 10-K | May 27, 2026 | Mar 31, 2026 | - | |
| 8-K | May 27, 2026 | - | Analysis | |
| SC 13G | Apr 29, 2026 | - | - | |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Apr 7, 2026 | - | - | - |
| 4 | Feb 26, 2026 | - | - | - |
| 8-K | Feb 17, 2026 | - | - | |
| 8-K | Feb 4, 2026 | - | - | |
| 10-Q | Feb 4, 2026 | Dec 31, 2025 | Analysis | |
| 8-K | Dec 23, 2025 | - | - | |
| 8-K | Dec 10, 2025 | - | - |
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AMSC SEC filings: frequently asked questions
Which institutions hold AMSC stock?
As of June 30, 2026, the largest AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) holders among the 13F filers tracked by SignalX were BlackRock ($170.0 million), Vanguard Capital Management LLC ($84.4 million), Vanguard Portfolio Management LLC ($58.9 million), State Street Corp ($56.4 million), Goldman Sachs Group ($53.7 million). 13F-HR reports are filed up to 45 days after each quarter ends.
What was AMSC's revenue in fiscal year 2026?
For the fiscal year ended March 31, 2026 (FY2026), AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) reported revenue of $299.2 million (up 34.3% from FY2025) and net income of $133.8 million. Diluted EPS was $3.05. The figures come from the XBRL data in the 10-K.
What did AMSC report in its latest 8-K?
AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) filed an 8-K on September 21, 2026 reporting Item 5.02 (Departure/Appointment of Directors or Principal Officers). Barbara G. Littlefield resigned from AMSC’s Board effective September 18, 2026.
What are the latest AMSC SEC filings?
AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC) filed its latest 10-K annual report on May 27, 2026, a 10-Q quarterly report on August 5, 2026, an 8-K current report on September 21, 2026 and a Form 4 insider filing on September 21, 2026.
What is AMSC's SEC CIK number?
AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC)'s SEC Central Index Key (CIK) is 880807. EDGAR lists every AMSC filing under that number.
Ask anything about AMSC
The research agent reads AMSC's filings, financials, insider trades and 13F holders, then answers with sources.