OTHER INFORMATION
−Removed: (c) During the three months ended December 31, 2025, no director or officer of the Company adopted or terminated a "Rule 10b5 - 1 trading arrangement" or "non-Rule 10b5 - 1 trading arrangement," as each term is defined in Item 408 (a) of Regulation S-K.
+Added: (c) During the three months ended June 30, 2026, no director or officer of the Company adopted or terminated a "Rule 10b5 - 1 trading arrangement" or "non-Rule 10b5 - 1 trading arrangement," as each term is defined in Item 408 (a) of Regulation S-K.
EXHIBIT INDEX
2 unchanged sentences
Filed/Furnished
−Removed: 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.
−Removed: 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.
−Removed: Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda.
−Removed: and Comtrafo Indústria de Transformadores Elétricos S.A., relating to property located at Parque Industrial I, Lot No.
−Removed: S/5 of Block No.
−Removed: 406, located in Parque Industrial I, in the city of Cornélio Procópio, State of Paraná, with land area of 1,401.80 sq.ms.
−Removed: Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda.
−Removed: 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.
−Removed: Public Deed of Purchase and Sale of Real Estate Property, dated December 5, 2025, by and between Visão Participações Ltda.
−Removed: 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.
−Removed: Amendment No.
−Removed: 1 to Stock Exchange Agreement
+Added: Fiscal 2026 Executive Incentive Plan
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.
14 unchanged sentences
Furnished herewith
−Removed: 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.
−Removed: The annexes, schedules, and certain exhibits to this Exhibit have been omitted pursuant to Item 601(a)(5)(b)(2) of Regulation S-K.
−Removed: The Company hereby agrees to furnish supplementally a copy of any omitted annex, schedule or exhibit to the SEC upon request.
Attached as Exhibits 101 to this report are the following formatted in inline XBRL (Extensible Business Reporting Language):
−Removed: (i) Condensed Consolidated Balance Sheets as of December 31, 2025 and March 31, 2025 (ii) Statements of Operations for the three and nine months ended December 31, 2025 and 2024, (iii) Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended December 31, 2025 and 2024, (iv) Condensed Consolidated Statements of Cash Flows for the nine months ended December 31, 2025 and 2024, and (v) Notes to Condensed Consolidated Financial Statements.
+Added: (i) Condensed Consolidated Balance Sheets as of June 30, 2026 and March 31, 2026 (ii) Statements of Operations for the three months ended June 30, 2026 , and 2025 (iii) Condensed Consolidated Statements of Comprehensive Income for the three months ended June 30, 2026 , and 2025 (iv) Condensed Consolidated Statements of Cash Flows for the three months ended June 30, 2026 , and 2025 and (v) Notes to Condensed Consolidated Financial Statements.
Pursuant to the requirements 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
−Removed: February 4, 2026
+Added: August 5, 2026
Senior Vice President, Chief Financial Officer and Treasurer (Principal Financial and Accounting Officer)
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.