AMERICAN SUPERCONDUCTOR CORP /DE/
For the period ended Mar 31, 2026. Filed May 27, 2026.
View on SEC.govAbout this filing
A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.
FY2026 · Filed May 27, 2026
AMSC$25.33+8.3%Stored close · as of Nov 9, 2026
Extracted filing text, with the paragraph anchors used by the comparison.
See the whole filing, with its images and exhibitsContents
Item 16. Form 10-K Summary
None.
EXHIBIT INDEX
| Incorporated by Reference | |||||
|---|---|---|---|---|---|
| Exhibit Number · Exhibit Description · Form · File No. · Exhibit · Filing Date · Filed/Furnished Herewith | |||||
| 3.1 | Restated Certificate of Incorporation of the Registrant, as amended. | S-3 | 333-191153 | 3.1 | 9/13/2013 |
| 3.2 | Certificate of Amendment of Restated Certificate of Incorporation of the Registrant, dated March 24, 2015. | 8-K | 000-19672 | 3.1 | 3/24/2015 |
| 3.3 | Amended and Restated By-Laws of the Registrant. | 8-K | 000-19672 | 3.1 | 2/5/2025 |
| 4.1 | Form of Indenture. | S-3 | 333-276766 | 4.1 | 1/30/2024 |
| 4.2 | Description of Capital Stock. | 10-K | 000-19672 | 4.3 | 6/5/2019 |
| 10.1+ | Amended and Restated 2007 Director Stock Plan, as Amended. | 10-Q | 000-19672 | 10.2 | 7/30/2025 |
| 10.2+ | Form of Non-statutory Stock Option Agreement Under Amended and Restated 2007 Director Stock Plan. | 8-K | 000-19672 | 10.7 | 8/7/2007 |
| 10.3+ | 2022 Stock Incentive Plan, as Amended and Restated. | 8-K | 000-19672 | 10.1 | 8/5/2024 |
| 10.4+ | Form of Time-Based Restricted Stock Agreement Under 2022 Stock Incentive Plan. | 8-K | 000-19672 | 10.2 | 8/5/2022 |
| 10.5+ | Form of Performance-Based Restricted Stock Agreement Under 2022 Stock Incentive Plan. | 8-K | 000-19672 | 10.3 | 8/5/2022 |
| 10.6+ | Form of Option Agreement Under 2022 Stock Incentive Plan. | 8-K | 000-19672 | 10.4 | 8/5/2022 |
| 10.7+ | Fiscal 2025 Executive Incentive Plan | 8-K | 000-19672 | 10.1 | 5/21/2025 |
| 10.8+ | Form of Employee Nondisclosure and Developments Agreement. | 10-K/A | 333-43647 | 10.11 | 6/7/2018 |
| 10.9+ | Amended and Restated Executive Severance Agreement, dated as of May 24, 2011, between the Registrant and Daniel P. McGahn. | 8-K | 000-19672 | 10.2 | 5/24/2011 |
| 10.10+ | Executive Severance Agreement, dated as of January 13, 2012, between the Registrant and John W. Kosiba. | 8-K | 000-19672 | 10.1 | 4/4/2017 |
| 10.11+ | First Amendment to Executive Severance Agreement, effective as of July 31, 2017, between the Registrant and John W. Kosiba. | 10-Q | 000-19672 | 10.1 | 11/7/2017 |
| Incorporated by Reference | ||||||
| Exhibit Number | Exhibit Description | Form | File No. | Exhibit | Filing Date | Filed/Furnished Herewith |
|---|---|---|---|---|---|---|
| 10.12+ | Fiscal 2024 Executive Incentive Plan. | 8-K | 000-19672 | 10.1 | 5/29/2024 | |
| 10.13^# | Stock Exchange Agreement, dated December 5, 2025, by and among AMSC Brazil, the Stockholders, Comtrafo, Irineu Minato, an individual, solely in his capacity as the stockholder representative, the Stockholder Group Members and American Superconductor Corporation, solely for purposes of Section 1.1(a), Article IV, Section 5.5 and Section 5.7. | 8-K | 000-19672 | 10.1 | 12/10/2025 | |
| 10.14^ | Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and among Irineu Minato, Karime Passos Prestes and Comtrafo Indústria de Transformadores Elétricos S.A, relating to real property located at Parque Industrial, in the City of Cornélio Procópio, State of Paraná, with land area of 8,527.80 sq.ms and built-up area of 5,177.48 sq.ms. | 8-K | 000-19672 | 10.2 | 12/10/2025 | |
| 10.15^ | Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda. and Comtrafo Indústria de Transformadores Elétricos S.A., relating to property located at Parque Industrial I, Lot No. S/5 of Block No. 406, located in Parque Industrial I, in the city of Cornélio Procópio, State of Paraná, with land area of 1,401.80 sq.ms. | 8-K | 000-19672 | 10.3 | 12/10/2025 | |
| 10.16^ | Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda. and Comtrafo Indústria de Transformadores Elétricos S.A., relating to real property located at Rodovia BR-369 - KM 95 - Ourinhos, in the City of Londrina, State of Paraná, with land area of 355,799.15 sq.ms. | 8-K | 000-19672 | 10.4 | 12/10/2025 | |
| 10.17^ | Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda. and Comtrafo Indústria de Transformadores Elétricos S.A,, relating to real property located at Parque Industrial Domingos Soares Filho, in the City of Cornélio Procópio, State of Paraná, with land area of 47,335.20 sq.ms. | 8-K | 000-19672 | 10.5 | 12/10/2025 | |
| 10.18 | Amendment No. 1 to Stock Exchange Agreement | 10-Q | 000-19672 | 10.6 | 2/4/2026 | |
| 19.1 | Insider Trading Policy | 10-K | 000-19672 | 19.1 | 5/21/2025 | |
| 21.1 | Subsidiaries. | * | ||||
| 23.1 | Consent of RSM US LLP | * | ||||
| 31.1 | Chief Executive Officer — Certification pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. | * | ||||
| 31.2 | Chief Financial Officer — Certification pursuant to Rule 13a-14(a) or Rule 15d-14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. | * | ||||
| 32.1 | Chief Executive Officer — Certification pursuant to Rule13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. | ** | ||||
| 32.2 | Chief Financial Officer — Certification pursuant to Rule 13a-14(b) or Rule 15d-14(b) of the Securities Exchange Act of 1934 and 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. | ** | ||||
| 97.1 | Policy for Recovery of Erroneously Awarded Compensation | 10-K | 000-19672 | 97.1 | 5/29/2024 | |
| 101.INS | Inline XBRL Instance Document. | * | ||||
| 101.SCH | Inline XBRL Taxonomy Extension Schema Document. | * | ||||
| 101.CAL | Inline XBRL Taxonomy Calculation Linkbase Document. | * | ||||
| 101.DEF | Inline XBRL Taxonomy Definition Linkbase Document. | * | ||||
| 101.LAB | Inline XBRL Taxonomy Label Linkbase Document. | * | ||||
| 101.PRE | Inline XBRL Taxonomy Presentation Linkbase Document. | * | ||||
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL and contained in Exhibit 101) | |||||
| * | Filed herewith. |
|---|
| ^ | Portions of the exhibit, marked by ***, have been omitted because the omitted information (i) is not material and (ii) is treated as confidential by the Company. |
|---|
| # | The annexes, schedules, and certain exhibits to this Exhibit have been omitted pursuant to Item 601(a)(5)(b)(2) of Regulation S-K. The Registrant hereby agrees to furnish supplementally a copy of any omitted annex, schedule or exhibit to the SEC upon request. |
|---|
| ** | Furnished herewith. |
|---|
SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| AMERICAN SUPERCONDUCTOR CORPORATION | |
| BY: | /S/ Daniel P. McGahn |
| Daniel P. McGahn Chairman of the Board, President, and Chief Executive Officer |
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.
| Name | Title | Date |
|---|---|---|
| /S/ Daniel P. McGahn | Chairman of the Board, President, Chief Executive Officer, and Director (Principal Executive Officer) | May 27, 2026 |
| Daniel P. McGahn | ||
| /S/ John W. Kosiba, Jr. | Senior Vice President, Chief Financial Officer and Treasurer | May 27, 2026 |
| John W. Kosiba, Jr. | (Principal Financial and Accounting Officer) | |
| /S/ Arthur H. House | Lead Independent Director of the Board | May 27, 2026 |
| Arthur H. House | ||
| /S/ Laura A. Dambier | Director | May 27, 2026 |
| Laura A. Dambier | ||
| /S/ Terence R. Donnelly | Director | May 27, 2026 |
| Terence R. Donnelly | ||
| /S/ Margaret D. Klein | Director | May 27, 2026 |
| Margaret D. Klein | ||
| /S/ Barbara g. Littlefield | Director | May 27, 2026 |
| Barbara G. Littlefield | ||
| /S/ David R. Oliver, Jr. | Director | May 27, 2026 |
| David R. Oliver, Jr. | ||
The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.