# American Superconductor Corp (AMSC)

> Cited company facts from SEC filings, by Steadybase. Web page: https://steadybase.io/company/american-superconductor-corp/ JSON: https://steadybase.io/company/american-superconductor-corp.json Checked Nov 10, 2026. Latest filing read: Nov 4, 2026.

## Company

- Legal name: AMERICAN SUPERCONDUCTOR CORP /DE/
- Ticker: AMSC (Nasdaq)
- SEC CIK: 0000880807
- Industry: Motors & Generators (SIC 3621)
- Headquarters: Devens, MA
- Fiscal year ends: March 31
- SEC filer category: Large accelerated filer
- Website: amsc.com
- Investor relations: https://www.amsc.com/investors/
- LinkedIn: https://www.linkedin.com/company/american-superconductor
- Next earnings date: Feb 3, 2027 (estimated from past 8-K timing)

## Key facts

- Revenue: $299.2M for the fiscal year ended Mar 31, 2026 (10-K filed May 27, 2026). Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/0001437749-26-018542-index.html
- Operating income: $11.4M for the fiscal year ended Mar 31, 2026 (10-K filed May 27, 2026). Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/0001437749-26-018542-index.html
- Net income: $133.8M for the fiscal year ended Mar 31, 2026 (10-K filed May 27, 2026). Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/0001437749-26-018542-index.html
- SG&A: $57.6M for the fiscal year ended Mar 31, 2026 (10-K filed May 27, 2026). Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/0001437749-26-018542-index.html
- Employees: 1,195 as of Mar 31, 2026, as reported in an SEC filing. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/amsc20260331_10k.htm
- Shares outstanding: 48,455,057 as of Oct 30, 2026 (10-Q filed Nov 4, 2026). Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926034936/0001437749-26-034936-index.html
- Auditor: Rsm Us LLP, Boston, MA, named in the latest 10-K. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/amsc20260331_10k.htm

## Business

American Superconductor Corporation (together with its subsidiaries, “AMSC®” or the “Company”) was founded on April 9, 1987. At AMSC, we believe that our creativity can meet today’s challenges and help us progress to a better future. That means using future-facing technologies to harmonize the world’s desire for sustainable progress with the need for more reliable, effective and efficient power delivery. Already, our transformative power solutions are moving the world forward.

Source: Item 1. Business, https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/amsc20260331_10k.htm

## Annual results

| Fiscal year ended | Revenue | Operating income | Net income | SG&A |
|---|---|---|---|---|
| Mar 31, 2026 | $299.2M | $11.4M | $133.8M | $57.6M |
| Mar 31, 2025 | $222.8M | -$1.1M | $6.0M | $43.1M |
| Mar 31, 2024 | $145.6M | -$11.4M | -$11.1M | $31.6M |
| Mar 31, 2023 | $106.0M | -$33.0M | -$35.0M | $28.7M |
| Mar 31, 2022 | $108.4M | -$21.1M | -$19.2M | $27.5M |

Each figure comes from the annual report for that year. Filing links for every figure: https://steadybase.io/company/american-superconductor-corp.json

## Officers and directors

- Daniel P. McGahn, Chairman, President and CEO. Source: Form 4 filed Jun 11, 2026, https://www.sec.gov/Archives/edgar/data/880807/000119312526267642/0001193125-26-267642-index.htm
- John W. Kosiba JR, SVP, CFO & Treasurer. LinkedIn: https://www.linkedin.com/in/john-kosiba-6b3084239. Source: Form 4 filed Jun 11, 2026, https://www.sec.gov/Archives/edgar/data/880807/000119312526267677/0001193125-26-267677-index.htm

## Recent 8-K events

- Nov 4, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926034935/amsc20260818_8k.htm
- Sep 21, 2026: Item 5.02, Departure or appointment of directors or officers; compensation. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926030822/amsc20260921_8k.htm
- Aug 5, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 5.07, Submission of matters to a vote of security holders; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926025921/amsc20260617_8k.htm
- Jun 2, 2026: Item 5.02, Departure or appointment of directors or officers; compensation; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926019163/amsc20260601_8k.htm
- May 27, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926018539/amsc20260211_8k.htm
- Feb 4, 2026: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774926002977/amsc20251203_8k.htm
- Dec 23, 2025: Item 8.01, Other events; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312525330930/d36453d8k.htm
- Dec 10, 2025: Item 1.01, Entry into a material definitive agreement; Item 2.01, Completion of acquisition or disposition of assets; Item 3.02, Unregistered sales of equity securities; Item 8.01, Other events; Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312525314153/d24846d8k.htm
- Nov 5, 2025: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774925033344/amsc20250820_8k.htm
- Jul 30, 2025: Item 2.02, Results of operations and financial condition (earnings release); Item 9.01, Financial statements and exhibits. Source: https://www.sec.gov/Archives/edgar/data/880807/000143774925023965/amsc20250515_8k.htm

## Insider trades (Form 4)

- Jun 11, 2026: Laura A. Dambier (Director) sold 4,000 shares, about $150,520. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526269433/0001193125-26-269433-index.htm
- Jun 11, 2026: John W. Kosiba JR (SVP, CFO & Treasurer) sold 6,769 shares, about $253,593. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526267677/0001193125-26-267677-index.htm
- Jun 11, 2026: Daniel P. McGahn (Chairman, President and CEO) sold 16,117 shares, about $603,469. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526267642/0001193125-26-267642-index.htm
- Jun 8, 2026: John W. Kosiba JR (SVP, CFO & Treasurer) sold 4,835 shares, about $201,969. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526265996/0001193125-26-265996-index.htm
- Jun 8, 2026: Daniel P. McGahn (Chairman, President and CEO) sold 9,670 shares, about $403,984. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526265990/0001193125-26-265990-index.htm
- Jun 3, 2026: John W. Kosiba JR (SVP, CFO & Treasurer) sold 36,909 shares, about $1.9M. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526255471/0001193125-26-255471-index.htm
- Jun 3, 2026: Daniel P. McGahn (Chairman, President and CEO) sold 85,418 shares, about $4.3M. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526255450/0001193125-26-255450-index.htm
- Feb 24, 2026: David R. Oliver Jr (Director) sold 200 shares, about $6,820. Source: https://www.sec.gov/Archives/edgar/data/880807/000119312526077349/0001193125-26-077349-index.htm
- Aug 8, 2025: Arthur H. House (Director) sold 9,703 shares, about $494,077. Source: https://www.sec.gov/Archives/edgar/data/880807/000095017025105858/0000950170-25-105858-index.htm
- Aug 4, 2025: Daniel P. McGahn (Chairman, President and CEO) sold 100,848 shares, about $5.5M. Source: https://www.sec.gov/Archives/edgar/data/880807/000095017025104149/0000950170-25-104149-index.htm
- Aug 4, 2025: John W. Kosiba JR (SVP, CFO & Treasurer) sold 59,843 shares, about $3.3M. Source: https://www.sec.gov/Archives/edgar/data/880807/000095017025104131/0000950170-25-104131-index.htm

## Latest filings

- 8-K filed Sep 21, 2026: https://www.sec.gov/Archives/edgar/data/880807/000143774926030822/amsc20260921_8k.htm
- 10-K filed May 27, 2026: https://www.sec.gov/Archives/edgar/data/880807/000143774926018542/amsc20260331_10k.htm
- 10-Q filed Aug 5, 2026: https://www.sec.gov/Archives/edgar/data/880807/000143774926025922/amsc20260630_10q.htm
- DEF 14A filed Jun 18, 2026: https://www.sec.gov/Archives/edgar/data/880807/000119312526275809/d129644ddef14a.htm

## About this data

SEC EDGAR filings, read by Steadybase. Every value links to the filing it came from.
Steadybase covers US-headquartered public companies that file with the SEC. API and MCP access: https://steadybase.io/docs/