AMSC / American Superconductor Corporation - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

American Superconductor Corporation
US ˙ NasdaqGS ˙ US0301112076

Mga Batayang Estadistika
LEI 549300S9YT8Z8LOK4452
CIK 880807
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to American Superconductor Corporation
SEC Filings (Chronological Order)
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July 30, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2025 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

July 30, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2025 American Supercondu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2025 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Em

July 30, 2025 EX-99.1

AMSC Reports First Quarter Fiscal Year 2025 Financial Results and Business Outlook

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2025 Financial Results and Business Outlook First Quarter Financial Highlights: • Increased Revenue by 80% Year Over Year to Above $70 Million • Reported Net Income of Over $6 Million and Non-GAAP Net Income Exceeding $11 million • Achieved Gross Margin Greater than 30% Company to host conference call tomorrow, July 31, at 10:00 am ET Ayer, MA –

July 30, 2025 EX-10.2

Amended and Restated 2007 Director Stock Plan, as Amended.

Exhibit 10.2 AMERICAN SUPERCONDUCTOR CORPORATION AMENDED AND RESTATED 2007 DIRECTOR STOCK PLAN, AS AMENDED 1. Purpose. The purpose of this Amended and Restated 2007 Director Stock Option Plan (the “Plan”) of American Superconductor Corporation (the “Company”) is to encourage stock ownership in the Company by outside directors of the Company whose continued services are considered essential to the

July 29, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2025 American Supercondu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 25, 2025 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Em

June 13, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 13, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 11, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 AMERICAN SUPERCONDUCTOR CORP /DE/ Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Shares, $0.

June 11, 2025 EX-1.1

Underwriting Agreement, dated June 10, 2025, by and between American Superconductor Corporation and Oppenheimer & Co. Inc., as representative of the several underwriters named therein

EX-1.1 Exhibit 1.1 4,125,000 Shares of Common Stock AMERICAN SUPERCONDUCTOR CORPORATION UNDERWRITING AGREEMENT June 10, 2025 Oppenheimer & Co. Inc. as Representative of the several Underwriters named in Schedule A hereto c/o Oppenheimer & Co. Inc. 85 Broad Street New York, New York 10004 Dear Ladies and Gentlemen: 1. INTRODUCTORY. American Superconductor Corporation, a Delaware corporation (the “C

June 11, 2025 424B5

4,125,000 Shares Common Stock

424B5 Filed Pursuant to Rule 424(b)(5) Registration No. 333-281496 PROSPECTUS SUPPLEMENT (To Prospectus dated August 12, 2024) 4,125,000 Shares Common Stock We are offering 4,125,000 shares of our common stock. Our common stock is listed on The Nasdaq Global Select Market, or Nasdaq, under the symbol “AMSC.” On June 9, 2025, the last reported sale price of our common stock was $33.09 per share. In

June 11, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2025 American Supercondu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2025 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation) (

June 10, 2025 424B5

SUBJECT TO COMPLETION, DATED JUNE 10, 2025

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-281496 The information in this preliminary prospectus supplement and the accompanying prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed. A registration statement relating to these securities has been declared effective by the Secur

May 21, 2025 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form

Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2024 INTRODUCTION AND SUMMARY This Conflict Minerals Report (this “Report”) of American Superconductor Corporation (together with its subsidiaries, “AMSC” or the “Company”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Rule 13p-1 (th

May 21, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

May 21, 2025 EX-99.1

AMSC Reports Fourth Quarter and Fiscal Year 2024 Financial Results and Business Outlook

Exhibit 99.1 AMSC Reports Fourth Quarter and Fiscal Year 2024 Financial Results and Business Outlook Business Highlights: • Full year revenues increased 53% year over year to $222.8 million • Full year net income increased $17.1 million year over year to $6.0 million • Generated $6.3 million of operating cash flow in the fourth quarter, helping to further strengthen the balance sheet Company to ho

May 21, 2025 EX-19.1

Insider Trading Policy

Exhibit 19.1 AMERICAN SUPERCONDUCTOR CORPORATION Insider Trading Policy (Amended and Restated as of January 22, 2024) 1. BACKGROUND AND PURPOSE The federal securities laws prohibit any member of the Board of Directors (a “Director”) and any employee of American Superconductor Corporation (together with its subsidiaries, the “Company”) from purchasing or selling Company securities on the basis of m

May 21, 2025 EX-21.1

AMSC Australia Pty Ltd (*) – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd (*) – incorporated in Australia AMSC Husky LLC (*) - formed in Connecticut AMSC India Private Limited (*) – incorporated in India AMSC Austria GmbH (*) – incorporated in Austria AMSC United Kingdom Limited (*) – incorporated in the United Kingdom ASC Securities Corp. (*) – incorporated in Massachusetts Infinia Technology Corporation (*) - incorporat

May 21, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

May 21, 2025 EX-10.1

Fiscal 2025 Executive Incentive Plan.

Exhibit 10.1 Fiscal 2025 Executive Incentive Plan. On May 15, 2025, the Compensation Committee of the Board of Directors (the “Committee”) of American Superconductor Corporation (the “Company”) and the Board of Directors of the Company approved an executive incentive plan for the Company’s fiscal year ending March 31, 2026 (“fiscal 2025”). Participants in the plan include the Company’s chief execu

May 21, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 15, 2025 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

February 5, 2025 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook Third Quarter Financial Highlights: • Increased Revenue by 56% Year Over Year to Above $60 Million • Net Income of over $2 Million • Generated nearly $6 Million of Operating Cash Flow Company to host conference call tomorrow, February 6, at 10:00 am ET Ayer, MA – February 5, 2025 – AMSC (Nasdaq

February 5, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

UNITED STATES SECURITIES AND EXCHANGE COMMISSION -03-31 Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 30, 2025 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commissi

February 5, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2024 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconduc

February 5, 2025 EX-3.1

Amended and Restated By-Laws of American Superconductor Corporation.

Exhibit 3.1 AMENDED AND RESTATED BY‑LAWS OF AMERICAN SUPERCONDUCTOR CORPORATION TABLE OF CONTENTS Page ARTICLE I STOCKHOLDERS 1 1.1 Place of Meetings 1 1.2 Annual Meeting 1 1.3 Special Meetings 1 1.4 Notice of Meetings 1 1.5 Voting List 1 1.6 Quorum 2 1.7 Adjournments 2 1.8 Voting and Proxies 2 1.6 Action at Meeting 2 1.10 Notice of Business to be Brought Before a Meeting. 3 1.11 Notice of Nominat

October 30, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 30, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

October 30, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2024 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

October 30, 2024 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook Financial Highlights: • Reported Second Quarter Net Income of Nearly $5 Million • Generated Nearly $13 Million of Operating Cash Flow During the Quarter • Increased Revenue by 60% Year Over Year to Above $54 Million Company to host conference call tomorrow, October 31, at 10:00 am ET Ayer, MA

August 28, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) American Semiconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1—Newly Registered Securities Plan Security Type Security Class Title Fee Calculation Rule Amount to be Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Amended and Restated 2007 Director Stock Plan, as Amended Equity Common Stock, $0.

August 28, 2024 S-8

As filed with the Securities and Exchange Commission on August 28, 2024

S-8 1 d887911ds8.htm S-8 As filed with the Securities and Exchange Commission on August 28, 2024 Registration No. 333-    UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 American Superconductor Corporation (Exact Name of Registrant as Specified in Its Charter) Delaware 04-2959321 (State or Other Jurisdiction o

August 13, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 American Supercon

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 12, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation)

August 12, 2024 EX-4.1

Form of Indenture.

Exhibit 4.1 AMERICAN SUPERCONDUCTOR CORPORATION INDENTURE Dated as of , 20 [] Trustee TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5 ARTICLE II. THE SECURITIES 5 Section 2.1. Issuable in Series 5 Section 2.

August 12, 2024 424B7

American Superconductor Corporation 1,297,600 Shares of Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(7) Registration No. 333-281496 PROSPECTUS SUPPLEMENT (To prospectus dated August 12, 2024) American Superconductor Corporation 1,297,600 Shares of Common Stock This prospectus supplement relates to the resale by the selling stockholders identified in this prospectus supplement of up to 1,297,600 shares of common stock, par value $0.01 per share, of A

August 12, 2024 EX-FILING FEES

Calculation of Filing Fee Table (Form Type) American Superconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amoun

EX-FILING FEES EXHIBIT 107 Calculation of Filing Fee Table 424(b)(7) (Form Type) American Superconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Newly Registered Securities Fees to be Paid — — — — — — — — Fees Previously Paid Equity Common Stock $0.

August 12, 2024 S-3ASR

As filed with the Securities and Exchange Commission on August 12, 2024

Table of Contents As filed with the Securities and Exchange Commission on August 12, 2024 Registration No.

August 12, 2024 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-3 (Form Type) American Superconductor Corporation (Exact Name of Registrant as Specified in its Charter) Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial effective date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid Equity Common Stock, par value $0.

August 6, 2024 EX-99.1

AMSC Reports First Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2024 Financial Results and Provides Business Outlook Q1 Financial Highlights: • Revenues Increased Over 33% Year Over Year to $40 Million • Reported Expanded Gross Margin and Achieved Non-GAAP Net Income • Generated $3.4 Million of Operating Cash Flow Company to host conference call tomorrow, August 7th, at 10:00 am ET Ayer, MA – August 6, 2024 –

August 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS E

August 6, 2024 EX-99.3

Unaudited Pro Forma Condensed Consolidated Financial Data

Exhibit 99.3 Unaudited Pro Forma Condensed Consolidated Financial Data On August 1, 2024, American Superconductor Corporation (“AMSC” or the “Company”), entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with each of the sellers listed on the signature pages thereto (each, a “Selling Stockholder” and collectively, the “Selling Stockholders”), Megatran Industries, Inc, a New J

August 6, 2024 EX-99.2

- 1 -

Exhibit 99.2 Megatran Industries, Subsidiaries and Affiliate Combined Balance Sheets June 30, 2024 and 2024 2024 2023 ASSETS Current assets: Cash $ 2,545,453 $ 1,635,144 Accounts receivable, net of allowance for credit losses of $37,000 and $6,554 in 2024 and 2023, respectively 20,036,139 18,860,927 Inventories, net 21,206,800 19,605,842 Prepaid expenses and other current assets 1,457,162 1,033,58

August 6, 2024 EX-99.1

- 1 -

Exhibit 99.1 Advisory | Audit & Accounting | Tax Independent Auditors' Report The Stockholders and The Board of Directors of Megatran Industries, Subsidiaries and Affiliate Bordentown, New Jersey Opinion We have audited the combined financial statements of Megatran Industries, Subsidiaries and Affiliate, which comprise the combined balance sheets as of December 31, 2023 and 2022, and the related c

August 6, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2024 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

August 6, 2024 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdictio

August 5, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation)

August 5, 2024 EX-10.1

Stock Purchase Agreement, dated August 1, 2024, by and among the Company, the Selling Stockholders, Megatran and James David Seitz, an individual, solely in his capacity as the stockholder representative thereunder.

Exhibit 10.1 Execution Version STOCK PURCHASE AGREEMENT by and among THE STOCKHOLDERS NAMED HEREIN, MEGATRAN INDUSTRIES, INC., AMERICAN SUPERCONDUCTOR CORPORATION, and THE STOCKHOLDER REPRESENTATIVE NAMED HEREIN Dated as of August 1, 2024 TABLE OF CONTENTS Section Page ARTICLE I. PURCHASE AND SALE OF THE ACQUIRED INTERESTS 1 Section 1.1 Purchase of the Acquired Interests from the Stockholders 1 Se

August 5, 2024 EX-10.2

Amended and Restated 2007 Director Stock Plan, as Amended.

Exhibit 10.2 AMERICAN SUPERCONDUCTOR CORPORATION AMENDED AND RESTATED 2007 DIRECTOR STOCK PLAN, AS AMENDED 1. Purpose. The purpose of this Amended and Restated 2007 Director Stock Option Plan (the “Plan”) of American Superconductor Corporation (the “Company”) is to encourage stock ownership in the Company by outside directors of the Company whose continued services are considered essential to the

August 5, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation)

August 5, 2024 EX-10.1

2022 Stock Incentive Plan, as Amended and Restated.

Exhibit 10.1 AMERICAN SUPERCONDUCTOR CORPORATION 2022 STOCK INCENTIVE PLAN, AS AMENDED AND RESTATED 1. Purpose The purpose of this 2022 Stock Incentive Plan (the “Plan”) of American Superconductor Corporation, a Delaware corporation (the “Company”), is to advance the interests of the Company’s stockholders by enhancing the Company’s ability to attract, retain and motivate persons who make or are e

June 20, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 20, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 10, 2024 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

May 29, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

May 29, 2024 EX-97.1

Policy for Recovery of Erroneously Awarded Compensation

Exhibit 97.1 AMERICAN SUPERCONDUCTOR CORPORATION POLICY FOR RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION American Superconductor Corporation (the “Company”) has adopted this Policy for Recovery of Erroneously Awarded Compensation (the “Policy”), effective as of October 2, 2023 (the “Effective Date”). Capitalized terms used in this Policy but not otherwise defined herein are defined in Section 11.

May 29, 2024 EX-99.1

AMSC Reports Fourth Quarter and Fiscal Year 2023 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Fourth Quarter and Fiscal Year 2023 Financial Results and Provides Business Outlook Business Highlights: • Full year revenues increased over 37% year over year to $145.6 million • Full year gross margin expansion of 1,620 basis points over the prior year • Generated $2.1 million of operating cash flow, helping to further strengthen the balance sheet Company to host confer

May 29, 2024 EX-10.1

Fiscal 2024 Executive Incentive Plan.

Exhibit 10.1 Fiscal 2024 Executive Incentive Plan. On May 23, 2024, the Compensation Committee of the Board of Directors (the “Committee”) of American Superconductor Corporation (the “Company”) and the Board of Directors of the Company approved an executive incentive plan for the Company’s fiscal year ending March 31, 2025 (“fiscal 2024”). Participants in the plan include the Company’s chief execu

May 29, 2024 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd – incorporated in Australia AMSC Husky LLC - formed in Connecticut AMSC India Private Limited – incorporated in India AMSC Austria GmbH – incorporated in Austria AMSC United Kingdom Limited – incorporated in the United Kingdom ASC Securities Corp. – incorporated in Massachusetts Infinia Technology Corporation - incorporated in Delaware American Supe

May 29, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

May 28, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

May 28, 2024 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form

Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2023 INTRODUCTION AND SUMMARY This Conflict Minerals Report (this “Report”) of American Superconductor Corporation (together with its subsidiaries, “AMSC” or the “Company”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Rule 13p-1 (th

March 13, 2024 CORRESP

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432 March 13, 2024 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, DC 20549 Attention: Jenny O’Shanick Re: American Superconductor Corporation Registration Statement on Form S-3 Filed January 30, 2024 File No. 333-276766 To the addressee set forth abo

March 8, 2024 S-3/A

As filed with the Securities and Exchange Commission on March 8, 2024

As filed with the Securities and Exchange Commission on March 8, 2024 Registration No.

March 6, 2024 CORRESP

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432 March 6, 2024 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, DC 20549 Attention: Jenny O’Shanick Re: American Superconductor Corporation Registration Statement on Form S-3 Filed January 30, 2024 File No. 333-276766 To the addressee set forth abov

March 5, 2024 CORRESP

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432

AMERICAN SUPERCONDUCTOR CORPORATION 114 East Main St. Ayer, MA 01432 March 5, 2024 Via EDGAR Securities and Exchange Commission Division of Corporation Finance Office of Manufacturing 100 F Street, N.E. Washington, DC 20549 Attention: Jenny O’Shanick Re: American Superconductor Corporation Registration Statement on Form S-3 Filed January 30, 2024 File No. 333-276766 To the addressee set forth abov

January 31, 2024 8-K

Current Report

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 30, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

January 31, 2024 EX-1.1

Underwriting Agreement, dated January 30, 2024, by and between American Superconductor Corporation and Oppenheimer & Co. Inc., as representative of the several underwriters named therein

Exhibit 1.1 EXECUTION VERSION 5,400,000 Shares of Common Stock AMERICAN SUPERCONDUCTOR CORPORATION UNDERWRITING AGREEMENT January 30, 2024 Oppenheimer & Co. Inc. as Representative of the several Underwriters named in Schedule A hereto c/o Oppenheimer & Co. Inc. 85 Broad Street New York, New York 10004 Dear Ladies and Gentlemen: 1. INTRODUCTORY. American Superconductor Corporation, a Delaware corpo

January 31, 2024 424B5

5,400,000 Shares Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-253611 PRELIMINARY PROSPECTUS SUPPLEMENT (To Prospectus dated June 21, 2021) 5,400,000 Shares Common Stock We are offering 5,400,000 shares of our common stock. Our common stock is listed on The Nasdaq Global Select Market, or Nasdaq, under the symbol “AMSC.” On January 30, 2024, the last reported sale price of our common stoc

January 30, 2024 S-3

As filed with the Securities and Exchange Commission on January 30, 2024

S-3 Table of Contents As filed with the Securities and Exchange Commission on January 30, 2024 Registration No.

January 30, 2024 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES Exhibit 107 CALCULATION OF FILING FEE TABLE Registration Statement on Form S-3 (Form Type) American Superconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1 – Newly Registered and Carry Forward Securities Security Type Security Class Title Fee  Calculation  or Carry  Forward  Rule  Amount Registered Proposed  Maximum  Offering  Price Per  Unit  Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid In Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees To Be Paid Equity Common Stock, $0.

January 30, 2024 424B5

The information in this preliminary prospectus supplement and the accompanying prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed. A registration statement rela

Table of Contents The information in this preliminary prospectus supplement and the accompanying prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed.

January 30, 2024 EX-4.1

Form of Indenture.

EX-4.1 Exhibit 4.1 AMERICAN SUPERCONDUCTOR CORPORATION INDENTURE Dated as of , 20 [] Trustee TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5 ARTICLE II. THE SECURITIES 5 Section 2.1. Issuable in Series 5 Sec

January 24, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 24, 2024 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

January 24, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2023 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconduc

January 24, 2024 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook Q3 Financial Highlights: • Revenues Increased Over 60% Year Over Year to $39 Million • Reported 25% Gross Margin and Achieved Non-GAAP Net Income • Generated $1.3 Million of Operating Cash Flow Company to host conference call tomorrow, January 25th at 10:00 am ET Ayer, MA – January 24, 2024 – A

November 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2023 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

November 1, 2023 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook Q2 Financial Highlights: • Revenues Increased 23% Year Over Year to $34 Million • Reported 25% Gross Margin and Achieved Non-GAAP Net Income • Generated $0.9 Million of Operating Cash Flow Company to host conference call tomorrow, November 2 at 10:00 am ET Ayer, MA – November 1, 2023 – AMSC (N

November 1, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

August 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2023 American Supercon

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 11, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

August 9, 2023 EX-99.1

AMSC Reports First Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2023 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 10 at 10:00 am ET Ayer, MA – August 9, 2023 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™ and protect and expand the capability and resi

August 9, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 9, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS E

August 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2023 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

June 28, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 28, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 21, 2023 EX-10.1

Fiscal 2023 Executive Incentive Plan

EX-10.1 Exhibit 10.1 Fiscal 2023 Executive Incentive Plan. On June 15, 2023, the Compensation Committee of the Board of Directors (the “Committee”) of American Superconductor Corporation (the “Company”) and the Board of Directors of the Company approved an executive incentive plan for the Company’s fiscal year ending March 31, 2024 (“fiscal 2023”). Participants in the plan include the Company’s ch

June 21, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 American Supercondu

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 15, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation) (

May 31, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

May 31, 2023 EX-99.1

AMSC Reports Fourth Quarter and Full Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 1 at 10:00 am ET

Exhibit 99.1 AMSC Reports Fourth Quarter and Full Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 1 at 10:00 am ET Ayer, MA – May 31, 2023 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™, and that protect and expand the capabili

May 31, 2023 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd – incorporated in Australia AMSC Husky LLC - formed in Connecticut AMSC India Private Limited – incorporated in India AMSC Austria GmbH – incorporated in Austria AMSC United Kingdom Limited – incorporated in the United Kingdom ASC Securities Corp. – incorporated in Massachusetts Infinia Technology Corporation - incorporated in Delaware American Supe

May 31, 2023 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form

EX-1.01 2 ex519180.htm EXHIBIT 1.01 Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2022 INTRODUCTION AND SUMMARY This Conflict Minerals Report (this “Report”) of American Superconductor Corporation (together with its subsidiaries, “AMSC” or the “Company”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (th

May 31, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 31, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

May 31, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

February 8, 2023 SC 13G/A

AMSC / American Superconductor Corporation / Invesco Ltd. - SEC SCHEDULE 13G Passive Investment

SC 13G/A 1 SEC13GFiling.htm SEC SCHEDULE 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2 )* American Superconductor Corp (Name of Issuer) Common Stock (Title of Class of Securities) 030111207 (CUSIP Number) December 30, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropria

February 1, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2022 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconduc

February 1, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 1, 2023 American Superco

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 1, 2023 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

February 1, 2023 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook

Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook ● Expected cost savings of approximately $5 million annually from recent action to improve future operating leverage ● Reg system milestone achieved, expected release of $5 million restricted cash performance bond in fourth quarter of fiscal year 2022 ● Company to host conference call tomorrow,

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 17, 2022 S-8 POS

As filed with the Securities and Exchange Commission on November 17, 2022

As filed with the Securities and Exchange Commission on November 17, 2022 Registration No.

November 1, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 1, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

November 1, 2022 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 2 at 10:00 am ET

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 2 at 10:00 am ET Ayer, MA ? November 1, 2022 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid? and protect and expand the capability and

November 1, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2022 ? Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

August 10, 2022 S-8

As filed with the Securities and Exchange Commission on August 9, 2022

As filed with the Securities and Exchange Commission on August 9, 2022 Registration No.

August 10, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) American Semiconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1?Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount to be Registered(1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

August 10, 2022 S-8

As filed with the Securities and Exchange Commission on August 9, 2022

S-8 1 d276986ds8.htm S-8 As filed with the Securities and Exchange Commission on August 9, 2022 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 American Superconductor Corporation (Exact Name of Registrant as Specified in Its Charter) Delaware 04-2959321 (State or Other Jurisdiction of In

August 10, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) American Semiconductor Corporation (Exact Name of Registrant as Specified in its Charter) Table 1?Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount to be Registered (1) Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Common Stock, $0.

August 5, 2022 EX-10.1

2022 Stock Incentive Plan (Incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed by the Registrant on August 5, 2022 (File No. 000-19672)).

Exhibit 10.1 AMERICAN SUPERCONDUCTOR CORPORATION 2022 STOCK INCENTIVE PLAN 1. Purpose The purpose of this 2022 Stock Incentive Plan (the ?Plan?) of American Superconductor Corporation, a Delaware corporation (the ?Company?), is to advance the interests of the Company?s stockholders by enhancing the Company?s ability to attract, retain and motivate persons who make or are expected to make important

August 5, 2022 EX-10.5

Amended and Restated 2007 Director Stock Plan.

Exhibit 10.5 AMERICAN SUPERCONDUCTOR CORPORATION AMENDED AND RESTATED 2007 DIRECTOR STOCK PLAN 1. Purpose. The purpose of this Amended and Restated 2007 Director Stock Option Plan (the ?Plan?) of American Superconductor Corporation (the ?Company?) is to encourage stock ownership in the Company by outside directors of the Company whose continued services are considered essential to the Company?s fu

August 5, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 2, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation)

August 5, 2022 EX-10.2

Form of Time-Based Restricted Stock Agreement Under 2022 Stock Incentive Plan.

Exhibit 10.2 Restricted Stock Agreement THIS RESTRICTED STOCK AGREEMENT (the ?Agreement?) is entered into, effective as of this day of , 20 (the ?Grant Date?), between American Superconductor Corporation, a Delaware corporation (the ?Company?), and (the ?Employee?). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Issuance of Shares. Effective a

August 5, 2022 EX-10.4

Form of Option Agreement Under 2022 Stock Incentive Plan.

Exhibit 10.4 AMERICAN SUPERCONDUCTOR CORPORATION 2022 STOCK INCENTIVE PLAN STOCK OPTION GRANT NOTICE Capitalized terms not specifically defined in this Stock Option Grant Notice (the ?Grant Notice?) have the meanings given to them in the 2022 Stock Incentive Plan (as amended from time to time, the ?Plan?) of American Superconductor Corporation (the ?Company?). The Company has granted to the partic

August 5, 2022 EX-10.3

Form of Performance-Based Restricted Stock Agreement Under 2022 Stock Incentive Plan.

Exhibit 10.3 Restricted Stock Agreement (Performance Vesting) THIS RESTRICTED STOCK AGREEMENT (the ?Agreement?) is entered into, effective as of this day of , 20 (the ?Grant Date?), between American Superconductor Corporation, a Delaware corporation (the ?Company?), and (the ?Employee?). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Issuance

August 3, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2022 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

August 3, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 3, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS E

August 3, 2022 EX-99.1

AMSC Reports First Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 4 at 10:00 am ET

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2022 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 4 at 10:00 am ET Ayer, MA ? August 3, 2022 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid? and protect and expand the capability and resil

July 26, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

June 23, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

June 23, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

DEF 14A 1 d277964ddef14a.htm DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ P

June 10, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 7, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

June 10, 2022 EX-10.1

Fiscal 2022 Executive Incentive Plan.

Exhibit 10.1 Fiscal 2022 Executive Incentive Plan. On June 7, 2022, the Compensation Committee of the Board of Directors (the ?Committee?) of American Superconductor Corporation (the ?Company?) and the Board of Directors of the Company approved an executive incentive plan for the Company?s fiscal year ending March 31, 2023 (?fiscal 2022?). Participants in the plan include the Company?s chief execu

June 1, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 1, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

June 1, 2022 EX-99.1

AMSC Reports Fourth Quarter and Full Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 2 at 10:00 am ET

Exhibit 99.1 AMSC Reports Fourth Quarter and Full Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 2 at 10:00 am ET Ayer, MA ? June 1, 2022 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid?, and that protect and expand the capabili

June 1, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

June 1, 2022 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd ? incorporated in Australia AMSC Husky LLC - formed in Connecticut AMSC India Private Limited ? incorporated in India AMSC Austria GmbH ? incorporated in Austria AMSC United Kingdom Limited ? incorporated in the United Kingdom ASC Securities Corp. ? incorporated in Massachusetts Infinia Technology Corporation - incorporated in Delaware Suzhou AMSC S

May 23, 2022 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form.

EX-1.01 2 ex378586.htm EXHIBIT 1.01 Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2021 INTRODUCTION AND SUMMARY This AMSC Conflict Minerals Report (this “Report”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Rule 13p-1 (the “Rule”) promulgated thereunder, for the reporting peri

May 23, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

February 14, 2022 SC 13G

AMSC / American Superconductor Corporation / Footprints Asset Management & Research - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* American Superconductor Corporation (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 030111207 (CUSIP Number) Stephen J. Lococo, 11422 Miracle Hills Drive, Suite 208 Omaha, NE 68154 402-445-9333 (Name, Address and Tel

February 9, 2022 SC 13G/A

AMSC / American Superconductor Corporation / Invesco Ltd. - SEC SCHEDULE 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1 )* American Superconductor Corp (Name of Issuer) Common Stock (Title of Class of Securities) 030111207 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to whic

February 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2021 ? Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconduc

February 2, 2022 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 3 at 10:00 am ET

Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 3 at 10:00 am ET Ayer, MA ? February 2, 2022 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid?, and protect and expand the capability and

February 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 2, 2022 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

November 8, 2021 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 9 at 10:00 am ET

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 9 at 10:00 am ET Ayer, MA ? November 8, 2021 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid?, and protect and expand the capability and

November 8, 2021 EX-10.1

Form of Executive Stock Award Agreement (regarding stock awards to executive officers in lieu of cash bonus payouts), under 2007 Stock Incentive Plan, as amended.

EXHIBIT 10.1 AMERICAN SUPERCONDUCTOR CORPORATION 2007 STOCK INCENTIVE PLAN, AS AMENDED EXECUTIVE STOCK AWARD AGREEMENT GRANT NOTICE Unless otherwise defined herein, the terms defined in the 2007 Stock Incentive Plan of American Superconductor Corporation (the ?Company?), as amended from time to time (the ?Plan?), shall have the same defined meanings in this Executive Stock Award Agreement, which i

November 8, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2021 ? Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

November 8, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 8, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

August 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2021 ? Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

August 4, 2021 EX-99.1

AMSC Reports First Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 5 at 10:00 am ET

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2021 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 5 at 10:00 am ET Ayer, MA ? August 4, 2021 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid?, and protect and expand the capability and resi

August 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 4, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS E

August 2, 2021 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 30, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation) (

June 17, 2021 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 17, 2021 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ? Filed by a Party other than the Registrant ? Check the appropriate box: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Definitive Proxy Statement ? Definitive Additional Materials ? Soliciting Material Pursuant to ?240.

June 2, 2021 EX-99.1

AMSC Reports Fourth Quarter and Full Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 3 at 10:00 am ET

Exhibit 99.1 AMSC Reports Fourth Quarter and Full Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 3 at 10:00 am ET Ayer, MA ? June 2, 2021 ? AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid?, and that protect and expand the capabili

June 2, 2021 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

June 2, 2021 POS AM

As filed with the Securities and Exchange Commission on June 2, 2021

POS AM 1 d155191dposam.htm POS AM Table of Contents As filed with the Securities and Exchange Commission on June 2, 2021 Registration No. 333-253611 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 2 TO Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 American Superconductor Corporation (Exact name of registrant as specified in it

June 2, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

June 2, 2021 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd ? incorporated in Australia AMSC Husky LLC - formed in Connecticut AMSC India Private Limited ? incorporated in India AMSC Austria GmbH ? incorporated in Austria AMSC United Kingdom Limited ? incorporated in the United Kingdom ASC Devens LLC ? formed in Delaware ASC Securities Corp. ? incorporated in Massachusetts Infinia Technology Corporation - in

June 2, 2021 POSASR

As filed with the Securities and Exchange Commission on June 2, 2021

Table of Contents As filed with the Securities and Exchange Commission on June 2, 2021 Registration No.

June 2, 2021 EX-10.21

Amendment No. 3 to Supply Contract, entered into on May 11, 2021, by and between the Registrant and Inox Wind Limited.

Exhibit 10.21 Certain information marked as [**] has been excluded from this exhibit because it is both (i) not material and (ii) is the type that the Registrant treats as private or confidential. Deed of Amendment No. 3 to Supply Contract for DF2000/50Hz Electric Control Systems for the WT2000DF Wind Turbine This Deed of Amendment No. 3 to Supply Contract for DF2000/50Hz Electric Control Systems

June 2, 2021 EX-10.10

Amended and Restated 2007 Director Stock Plan.

Exhibit 10.10 AMERICAN SUPERCONDUCTOR CORPORATION AMENDED AND RESTATED 2007 DIRECTOR STOCK PLAN 1. Purpose. The purpose of this Amended and Restated 2007 Director Stock Option Plan (the ?Plan?) of American Superconductor Corporation (the ?Company?) is to encourage stock ownership in the Company by outside directors of the Company whose continued services are considered essential to the Company?s f

May 27, 2021 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form.

Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2020 INTRODUCTION AND SUMMARY This AMSC Conflict Minerals Report (this ?Report?) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the ?Exchange Act?) and Rule 13p-1 (the ?Rule?) promulgated thereunder, for the reporting period from January 1, 2020 to December

May 27, 2021 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter)

SD 1 amsc20210527sd.htm FORM SD UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main

May 25, 2021 EX-10.1

Fiscal 2021 Executive Incentive Plan.

Exhibit 10.1 Fiscal 2021 Executive Incentive Plan. On May 20, 2021, the Compensation Committee of the Board of Directors (the ?Committee?) of American Superconductor Corporation (the ?Company?) and the Board of Directors of the Company approved an executive incentive plan for the Company?s fiscal year ending March 31, 2022 (?fiscal 2021?). Participants in the plan include the Company?s chief execu

May 25, 2021 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 20, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

May 21, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporation) (C

May 21, 2021 424B7

CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered (1) Offering Price Per Share (2) Proposed Maximum Aggregate Offering Price Amount of Registration Fee (3) Common Stock, $0.01 par value per sha

424B7 1 d149419d424b7.htm 424B7 Table of Contents Filed Pursuant to Rule 424(b)(7) Registration No. 333-253611 CALCULATION OF REGISTRATION FEE Title of Each Class of Securities to be Registered Amount to be Registered (1) Offering Price Per Share (2) Proposed Maximum Aggregate Offering Price Amount of Registration Fee (3) Common Stock, $0.01 par value per share 301,556 shares $13.84 $4,173,535.04

May 10, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

8-K 1 d80808d8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 6, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdicti

May 10, 2021 EX-10.1

Stock Purchase Agreement, dated May 6, 2021, by and among American Superconductor Corporation, Antonio Capanna, Sr., Antonio Capanna, Jr., The Antonio Capanna 2010 Spousal Lifetime Access Trust Dated December 28, 2010 and the Other Seller Parties.

Exhibit 10.1 Execution Version STOCK PURCHASE AGREEMENT by and among ANTONIO CAPANNA, SR., ANTONIO CAPANNA, JR., THE ANTONIO CAPANNA 2010 SPOUSAL LIFETIME ACCESS TRUST DATED DECEMBER 28, 2010, THE OTHER SELLER PARTIES and AMERICAN SUPERCONDUCTOR CORPORATION TABLE OF CONTENTS Section Page ARTICLE I. PURCHASE AND SALE OF THE ACQUIRED INTERESTS 2 Section 1.1 Purchase of the Acquired Interests from th

May 10, 2021 EX-10.2

Purchase and Sale Agreement, dated May 6, 2021, by and among AMSC Husky LLC, 71 Pickett District Road, LLC, Antonio Capanna, Sr. and Filomena Capanna.

Exhibit 10.2 PURCHASE AND SALE AGREEMENT THIS PURCHASE AND SALE AGREEMENT (hereinafter referred to as this ?Agreement?) is made and entered into as of May 6, 2021 (the ?Effective Date?) by and between 71 PICKETT DISTRICT ROAD, LLC, a Connecticut limited liability company (?Fee Owner?), and ANTONIO CAPANNA, SR., an individual, and FILOMENA CAPANNA, an individual, each as members of Fee Owner (toget

February 26, 2021 EX-99.1

Unaudited Pro Forma Condensed Consolidated Financial Data

EX-99.1 Exhibit 99.1 Unaudited Pro Forma Condensed Consolidated Financial Data On October 1, 2020, American Superconductor Corporation (“AMSC” or the “Company”), entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with Frank J. Steciuk, Paul B. Steciuk and Peter A. Steciuk (together, the “Selling Stockholders”). Pursuant to the terms of the Stock Purchase Agreement and concurr

February 26, 2021 EX-4.1

Form of Indenture.

Exhibit 4.1 AMERICAN SUPERCONDUCTOR CORPORATION INDENTURE Dated as of , 20 [] Trustee TABLE OF CONTENTS Page ARTICLE I. DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.1. Definitions 1 Section 1.2. Other Definitions 4 Section 1.3. Incorporation by Reference of Trust Indenture Act 4 Section 1.4. Rules of Construction 5 ARTICLE II. THE SECURITIES 5 Section 2.1. Issuable in Series 5 Section 2.

February 26, 2021 S-3ASR

- S-3ASR

S-3ASR 1 d66281ds3asr.htm S-3ASR Table of Contents As filed with the Securities and Exchange Commission on February 26, 2021 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 04-2959321 (Stat

February 26, 2021 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 26, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorporatio

February 16, 2021 EX-99

JOINT FILING AGREEMENT

JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) (l) under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing of the attached Schedule 13G, and any and all amendments thereto, and expressly authorize Invesco Ltd.

February 16, 2021 SC 13G

SCHEDULE 13G

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* American Superconductor Corp (Name of Issuer) Common Stock (Title of Class of Securities) 030111207 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

February 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 3, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

February 3, 2021 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 4 at 10:00 am ET

EX-99.1 2 ex217103.htm EXHIBIT 99.1 Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 4 at 10:00 am ET Ayer, MA – February 3, 2021 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™, and pr

February 3, 2021 10-Q

Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2020 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconduc

February 1, 2021 EX-3.1

Amended and Restated By-Laws of American Superconductor Corporation (Incorporated by reference to Exhibit 3.1 to the Registration Statement on Form 8-K filed by the Registrant on February 1, 2021 (File No. 333-191153)).

Exhibit 3.1 AMENDED AND RESTATED BY-LAWS OF AMERICAN SUPERCONDUCTOR CORPORATION TABLE OF CONTENTS Page ARTICLE I STOCKHOLDERS 1 1.1 Place of Meetings 1 1.2 Annual Meeting 1 1.3 Special Meetings 1 1.4 Notice of Meetings 1 1.5 Voting List 1 1.6 Quorum 1 1.7 Adjournments 1 1.8 Voting and Proxies 2 1.9 Action at Meeting 2 1.10 Nomination of Directors 2 1.11 Notice of Business at Annual Meetings 4 1.12

February 1, 2021 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 28, 2021 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

December 14, 2020 EX-99.1

NORTHEAST POWER SYSTEMS, INC. AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS DECEMBER 31, 2019 TABLE OF CONTENTS

Exhibit 99.1 NORTHEAST POWER SYSTEMS, INC. AND SUBSIDIARIES CONSOLIDATED FINANCIAL STATEMENTS DECEMBER 31, 2019 TABLE OF CONTENTS Page Independent Auditors’ Report 1-2 Consolidated Balance Sheet 3 Consolidated Statement of Income 4 Consolidated Statement of Stockholders’ and Members’ Equity 5 Consolidated Statement of Cash Flows 6 Notes to Consolidated Financial Statements 7-14 Schedule Number CON

December 14, 2020 EX-99.2

NORTHEAST POWER SYSTEMS, INC. AND SUBSIDIARIES CONDENSED CONSOLIDATED FINANCIAL STATEMENTS NINE MONTHS ENDED SEPTEMBER 30, 2020 TABLE OF CONTENTS

Exhibit 99.2 NORTHEAST POWER SYSTEMS, INC. AND SUBSIDIARIES CONDENSED CONSOLIDATED FINANCIAL STATEMENTS NINE MONTHS ENDED SEPTEMBER 30, 2020 (unaudited) TABLE OF CONTENTS Page Condensed Consolidated Financial Statements (Unaudited) Consolidated Balance Sheet as of September 30, 2020 3 Consolidated Statement of Income for the nine months ended September 30, 2020 4 Consolidated Statement of Stockhol

December 14, 2020 8-K/A

Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdicti

December 14, 2020 EX-99.3

Unaudited Pro Forma Condensed Consolidated Financial Data

Exhibit 99.3 Unaudited Pro Forma Condensed Consolidated Financial Data On October 1, 2020, American Superconductor Corporation (“AMSC” or the “Company”), entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) with Frank J. Steciuk, Paul B. Steciuk and Peter A. Steciuk (together, the “Selling Stockholders”). Pursuant to the terms of the Stock Purchase Agreement and concurrently wi

November 4, 2020 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 5 at 10:00 am ET

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 5 at 10:00 am ET Ayer, MA – November 4, 2020 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™, and protect and expand the capability and

November 4, 2020 10-Q

Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2020 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

November 4, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amsc202008258k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 4, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or o

October 26, 2020 EX-1.1

Underwriting Agreement, dated October 22, 2020, by and between American Superconductor Corporation and Oppenheimer & Co. Inc., as representative of the several underwriters named therein

EX-1.1 Exhibit 1.1 3,670,000 Shares of Common Stock AMERICAN SUPERCONDUCTOR CORPORATION UNDERWRITING AGREEMENT October 22, 2020 Oppenheimer & Co. Inc. as Representative of the several Underwriters named in Schedule A hereto c/o Oppenheimer & Co. Inc. 85 Broad Street New York, New York 10004 Dear Ladies and Gentlemen: 1. INTRODUCTORY. American Superconductor Corporation, a Delaware corporation (the

October 26, 2020 8-K

Financial Statements and Exhibits, Other Events - 8-K

8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 22, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction of incorpora

October 23, 2020 424B5

3,670,000 Shares Common Stock

424B5 Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-222874 PRELIMINARY PROSPECTUS SUPPLEMENT (To Prospectus dated February 15, 2018) 3,670,000 Shares Common Stock We are offering 3,670,000 shares of our common stock. Our common stock is listed on The Nasdaq Global Select Market, or Nasdaq, under the symbol “AMSC.” On October 21, 2020, the last reported sale price of our c

October 21, 2020 424B5

SUBJECT TO COMPLETION, DATED OCTOBER 21, 2020

424B5 Table of Contents The information in this preliminary prospectus supplement and the accompanying prospectus, relating to an effective registration statement under the Securities Act of 1933, as amended, is not complete and may be changed.

October 5, 2020 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

October 5, 2020 8-K

- FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 5, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

October 5, 2020 EX-10.1

Stock Purchase Agreement, dated October 1, 2020, by and among American Superconductor Corporation, Frank J. Steciuk, Paul B. Steciuk and Peter A. Steciuk.

EX-10.1 2 ex205896.htm EXHIBIT 10.1 Exhibit 10.1 STOCK PURCHASE AGREEMENT by and among Frank J. Steciuk, Paul B. Steciuk, Peter A. Steciuk and AMERICAN SUPERCONDUCTOR CORPORATION TABLE OF CONTENTS Section Page Article I. PURCHASE AND SALE OF THE ACQUIRED INTERESTS 2 Section 1.1 Purchase of the Acquired Interests from the Stockholders 2 Section 1.2 Further Assurances 2 Section 1.3 Purchase Price 2

October 2, 2020 8-K

Other Events

8-K 1 amsc20201002b8k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 1, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or o

September 16, 2020 8-K

Other Events - FORM 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 11, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (I

August 5, 2020 EX-99.1

AMSC Reports First Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 6 at 10:00 am ET

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2020 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 6 at 10:00 am ET Ayer, MA – August 5, 2020 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™, and that protect and expand the capability and

August 5, 2020 10-Q

Quarterly Report - FORM 10-Q

10-Q 1 amsc20200630b10q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2020 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Nu

August 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Em

June 19, 2020 DEF 14A

Definitive Proxy Statement

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 19, 2020 DEFA14A

- DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 19, 2020 SC 13G/A

AMSC / American Superconductor Corp. / DOUGLAS KEVIN - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* American Superconductor Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 030111207 (CUSIP Number of Class of Securities) June 8, 2020 (Date of Event Which Requires Filing of this Statement) Check the appropri

June 2, 2020 EX-10.30

Amendment to Subcontract Agreement, effective February 6, 2020, by and between the Registrant and Commonwealth Edison Company.

EX-10.30 2 ex187341.htm EXHIBIT 10.30 Exhibit 10.30 January 29, 2020 American Superconductor Corporation 114 East Main Street Ayer, MA 01432 Attention: James Maguire, EVP Technology Re: HSBC Bank USA, N.A. Standby Letter of Credit dated August 6, 2019 Ladies and Gentlemen: Reference is made to (i) that certain Subcontract Agreement No. 08900001-007 (the “Agreement”), dated October 31, 2018, by and

June 2, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 2, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

June 2, 2020 EX-99.1

AMSC Reports Fourth Quarter and Full Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 3 at 10:00 am ET

Exhibit 99.1 AMSC Reports Fourth Quarter and Full Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 3 at 10:00 am ET Ayer, MA – June 2, 2020 – AMSC (Nasdaq: AMSC), a leading system provider of megawatt-scale power resiliency solutions that orchestrate the rhythm and harmony of power on the grid™, and that protect and expand the capabili

June 2, 2020 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd – incorporated in Australia AMSC India Private Limited – incorporated in India AMSC Austria GmbH – incorporated in Austria AMSC United Kingdom Limited – incorporated in the United Kingdom ASC Devens LLC – formed in Delaware ASC Securities Corp. – incorporated in Massachusetts Infinia Technology Corporation - incorporated in Delaware Superconductivit

June 2, 2020 10-K

Annual Report - FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 000-19672 American Superconductor Corpo

May 27, 2020 EX-10.1

Fiscal 2020 Executive Incentive Plan.

Exhibit 10.1 Fiscal 2020 Executive Incentive Plan. On May 21, 2020, the Compensation Committee of the Board of Directors (the “Committee”) of American Superconductor Corporation (the “Company”) and the Board of Directors of the Company approved an executive incentive plan for the Company’s fiscal year ending March 31, 2021 (“fiscal 2020”). Participants in the plan include the Company’s chief execu

May 27, 2020 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

8-K 1 amsc202005278k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other

May 26, 2020 SD

- FORM SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

May 26, 2020 EX-1.01

Conflict Minerals Report as required by Item 1.01 and 1.02 of this Form.

Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2019 INTRODUCTION AND SUMMARY This AMSC Conflict Minerals Report (this “Report”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Rule 13p-1 (the “Rule”) promulgated thereunder, for the reporting period from January 1, 2019 to December

February 13, 2020 SC 13G/A

AMSC / American Superconductor Corp. / SATTERFIELD THOMAS A JR - SC 13G/A Passive Investment

SC 13G/A SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 (Amendment No. 2)* American Superconductor Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 030111207 (CUSIP Number) December 31, 2019 (Date

February 5, 2020 EX-10.1

Form of Performance-Based Restricted Stock Agreement for Executive Officers under 2007 Stock Incentive Plan, as amended.

Exhibit 10.1 Restricted Stock Agreement (Performance Vesting) THIS RESTRICTED STOCK AGREEMENT (the “Agreement”) is entered into, effective as of this day of , 20 (the “Grant Date”), between American Superconductor Corporation, a Delaware corporation (the “Company”), and (the “Employee”). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Issuance

February 5, 2020 EX-10.2

Form of Time-Based Restricted Stock Agreement for Executive Officers under 2007 Stock Incentive Plan, as amended.

Exhibit 10.2 Restricted Stock Agreement THIS RESTRICTED STOCK AGREEMENT (the “Agreement”) is entered into, effective as of this day of , 20 (the “Grant Date”), between American Superconductor Corporation, a Delaware corporation (the “Company”), and (the “Employee”). For valuable consideration, receipt of which is acknowledged, the parties hereto agree as follows: 1. Issuance of Shares. Effective a

February 5, 2020 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amsc201912128k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2020 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or o

February 5, 2020 10-Q

AMSC / American Superconductor Corp. 10-Q - Quarterly Report - FORM 10-Q

10-Q 1 amsc2019123110q.htm FORM 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended December 31, 2019 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File

February 5, 2020 EX-99.1

AMSC Reports Third Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 6 at 10:00 am ET

Exhibit 99.1 AMSC Reports Third Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 6 at 10:00 am ET Ayer, MA – February 5, 2020 – AMSC (Nasdaq: AMSC), a global solutions provider serving power grid and wind industry leaders, today reported financial results for its third quarter of fiscal year 2019 ended December 31, 2019. Re

February 4, 2020 SC 13G/A

AMSC / American Superconductor Corp. / INTEGRATED CORE STRATEGIES (US) LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (AMENDMENT NO. 1) AMERICAN SUPERCONDUCTOR CORPORATION (Name of Issuer) COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class of Securities) 030111207 (CUSIP Number) DECEMBER 31, 2019 (Date of event which requires filing of this statement) Check the appropriate box to des

January 27, 2020 EX-99.A

JOINT FILING AGREEMENT

EX-A EXHIBIT A JOINT FILING AGREEMENT This Joint Filing Agreement (this “Agreement”) hereby confirms the agreement by and among all of the undersigned that the Schedule 13G to which this Agreement is attached as Exhibit A with respect to the beneficial ownership of the undersigned of shares Common Stock of American Superconductor Corporation is being filed on behalf of each of the undersigned.

January 27, 2020 SC 13G

AMSC / American Superconductor Corp. / DOUGLAS KEVIN - SC 13G Passive Investment

SC 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* American Superconductor Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 030111207 (CUSIP Number of Class of Securities) December 31, 2019 (Date of Event Which Requires Filing of this Statement) Check the approp

November 5, 2019 10-Q

AMSC / American Superconductor Corp. 10-Q - Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended September 30, 2019 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercondu

November 5, 2019 EX-99.1

AMSC Reports Second Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 6 at 10:00 am ET

Exhibit 99.1 AMSC Reports Second Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 6 at 10:00 am ET Ayer, MA – November 5, 2019 – AMSC (Nasdaq: AMSC), a global solutions provider serving power grid and wind industry leaders, today reported financial results for its second quarter of fiscal year 2019 ended September 30, 2019.

November 5, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 5, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

August 29, 2019 S-8

AMSC / American Superconductor Corp. S-8 - - S-8

S-8 As filed with the Securities and Exchange Commission on August 29, 2019 Registration No.

August 6, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

8-K 1 d778101d8k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 1, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisd

August 6, 2019 EX-10.2

Amended and Restated 2007 Director Stock Plan.

EX-10.2 Exhibit 10.2 AMERICAN SUPERCONDUCTOR CORPORATION AMENDED AND RESTATED 2007 DIRECTOR STOCK PLAN 1. Purpose. The purpose of this Amended and Restated 2007 Director Stock Option Plan (the “Plan”) of American Superconductor Corporation (the “Company”) is to encourage stock ownership in the Company by outside directors of the Company whose continued services are considered essential to the Comp

August 6, 2019 EX-10.1

2007 Stock Incentive Plan, as amended (Incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed by the Registrant on August 6, 2019 (File No. 000-19672)).

EX-10.1 Exhibit 10.1 AMERICAN SUPERCONDUCTOR CORPORATION 2007 STOCK INCENTIVE PLAN, AS AMENDED 1. Purpose The purpose of this 2007 Stock Incentive Plan, as amended (the “Plan”) of American Superconductor Corporation, a Delaware corporation (the “Company”), is to advance the interests of the Company’s stockholders by enhancing the Company’s ability to attract, retain and motivate persons who are ex

August 6, 2019 EX-99.1

AMSC Reports First Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 7 at 10:00 am ET

Exhibit 99.1 AMSC Reports First Quarter Fiscal Year 2019 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 7 at 10:00 am ET Ayer, MA – August 6, 2019 – AMSC (Nasdaq: AMSC), a global solutions provider serving power grid and wind industry leaders, today reported financial results for its first quarter of fiscal year 2019 ended June 30, 2019. Revenues f

August 6, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amsc201907298k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or oth

August 6, 2019 10-Q

AMSC / American Superconductor Corp. 10-Q - Quarterly Report - FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☒ Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended June 30, 2019 ☐ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Superconductor

June 24, 2019 SC 13G

AMSC / American Superconductor Corp. / INTEGRATED CORE STRATEGIES (US) LLC Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 AMERICAN SUPERCONDUCTOR CORPORATION (Name of Issuer) COMMON STOCK, PAR VALUE $0.01 PER SHARE (Title of Class of Securities) 030111207 (CUSIP Number) JUNE 18, 2019 (Date of event which requires filing of this statement) Check the appropriate box to designate the rule pursua

June 20, 2019 DEFA14A

AMSC / American Superconductor Corp. DEFA14A - - DEFA14A

DEFA14A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy Statement ☒ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 20, 2019 DEF 14A

AMSC / American Superconductor Corp. DEF 14A - - DEF 14A

DEF 14A Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 14A (RULE 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy Statement ☐ Definitive Additional Materials ☐ Soliciting Material Pursuant to §240.

June 5, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amsc201905318k.htm FORM 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 1, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other

June 5, 2019 EX-10.1

Fiscal 2019 Executive Incentive Plan

Exhibit 10.1 Fiscal 2019 Executive Incentive Plan. On June 1, 2019, the Compensation Committee of the Board of Directors of American Superconductor Corporation (the “Committee”) and the Board of Directors of American Superconductor Corporation (the “Company”) approved an executive incentive plan for the Company’s fiscal year ending March 31, 2020 (“fiscal 2019”). Participants in the plan include t

June 5, 2019 EX-99.1

AMSC Reports Fourth Quarter and Full Fiscal Year 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 6 at 10:00 am ET

Exhibit 99.1 AMSC Reports Fourth Quarter and Full Fiscal Year 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, June 6 at 10:00 am ET Ayer, MA – June 5, 2019 – AMSC (Nasdaq: AMSC), a global solutions provider serving power grid and wind industry leaders, today reported financial results for its fourth quarter and full fiscal year 2018 ended March 31, 20

June 5, 2019 EX-21.1

AMSC Australia Pty Ltd – incorporated in Australia

Exhibit 21.1 Subsidiaries AMSC Australia Pty Ltd – incorporated in Australia AMSC India Private Limited – incorporated in India AMSC Austria GmbH – incorporated in Austria AMSC United Kingdom Limited – incorporated in the United Kingdom ASC Devens LLC – formed in Delaware ASC Securities Corp. – incorporated in Massachusetts Infinia Technology Corporation - incorporated in Massachusetts Superconduc

June 5, 2019 EX-10.39

Subordination of Subordinated Second Mortgage Rents by ASC Devens LLC to East Boston Savings Bank dated March 28, 2019.

EX-10.39 4 ex146284.htm EXHIBIT 10.39 Exhibit 10.39 SUBORDINATION OF SUBORDINATED SECOND MORTGAGE March 28 , 2019 East Boston Savings Bank, with an address of 67 Prospect Street, Peabody, Massachusetts 01960 (the “Lender”), is the holder of the following documents: i. Mortgage and Security Agreement dated as of March 28, 2018, given by Jackson 64 MGI, LLC, a Delaware limited liability company, wit

June 5, 2019 10-K

AMSC / American Superconductor Corp. 10-K - Annual Report - FORM 10-K

10-K 1 amsc2019033110k.htm FORM 10-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 Form 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission file number 00

June 5, 2019 EX-4.3

Exhibit 4.3

Exhibit 4.3 DESCRIPTION OF CAPITAL STOCK The following description of our capital stock is intended as a summary only. This description is based upon, and is qualified by reference to, our certificate of incorporation, our by-laws and applicable provisions of Delaware corporation law. Our authorized capital stock consists of 75,000,000 shares of common stock, $0.01 par value per share. Common Stoc

June 5, 2019 EX-10.38

First Amendment to Intercreditor, Subordination and Standstill Agreement by and between East Boston Savings Bank and ASC Devens LLC dated March 28, 2019.

EX-10.38 3 ex146283.htm EXHIBIT 10.38 Exhibit 10.38 FIRST AMENDMENT TO Intercreditor, Subordination and Standstill Agreement THIS FIRST AMENDMENT TO Intercreditor, Subordination and Standstill Agreement (this “Amendment”) made as of the 28th day of March, 2019, by and between EAST BOSTON SAVINGS BANK (hereafter “Senior Lender”), with a principal place of business at 67 Prospect Street, Peabody, Ma

May 30, 2019 EX-1.01

AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2018

Exhibit 1.01 to Form SD AMSC CONFLICT MINERALS REPORT For the year ended December 31, 2018 INTRODUCTION AND SUMMARY This AMSC Conflict Minerals Report (this “Report”) has been prepared in accordance with Section 13(p) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Rule 13p-1 (the “Rule”) promulgated thereunder, for the reporting period from January 1, 2018 to December

May 30, 2019 SD

AMSC / American Superconductor Corp. SD - - FORM SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT American Superconductor Corporation (Exact name of the registrant as specified in its charter) Delaware 0-19672 04-2959321 (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) 114 East Main Street, Ayer, Massachusetts 014

May 24, 2019 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 21, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Emp

February 14, 2019 SC 13G

AMSC / American Superconductor Corp. / Footprints Asset Management & Research - SC 13G Passive Investment

SC 13G 1 d703802dsc13g.htm SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* American Superconductor Corporation (Name of Issuer) Common Stock, par value $.01 per share (Title of Class of Securities) 030111207 (CUSIP Number) Stephen J. Lococo, 11422 Miracle Hills Drive, Suite 208 Omaha, NE 68154 4

February 13, 2019 SC 13G/A

AMSC / American Superconductor Corp. / SATTERFIELD THOMAS A JR - SCHEDULE 13G/A (AMENDMENT NO. 1) Passive Investment

Schedule 13G/A (Amendment No. 1) SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO RULES 13d-1(b), (c), AND (d) AND AMENDMENTS THERETO FILED PURSUANT TO RULE 13d-2 (Amendment No. 1)* American Superconductor Corporation (Name of Issuer) Common Stock (Title of Class of Securities) 030111207 (CUSIP Number)

February 8, 2019 SC 13G/A

AMSC / American Superconductor Corp. / HIRSCHMAN ORIN - AMENDMENT TO FORM SC 13G Passive Investment

SC 13G/A 1 amsc-sc13ga020719.htm AMENDMENT TO FORM SC 13G SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Amendment 1 Under the Securities Exchange Act of 1934 American Superconductor Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 030111207 (CUSIP Number) February 7, 2019 (Date of Event Which Requires Filing of this Stat

February 8, 2019 SC 13G

NNDM / Nano Dimension Ltd / HIRSCHMAN ORIN - REPORT OF ACQUISITION OF BENEFICIAL OWNERSHIP Passive Investment

SC 13G 1 amsc-sc13g020119.htm REPORT OF ACQUISITION OF BENEFICIAL OWNERSHIP SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 American Superconductor Corporation (Name of Issuer) Common Stock, NIS .10 par value (Title of Class of Securities) 63008G104 (CUSIP Number) February 1, 2019 (Date of Event Which Requires Filing of this Statemen

February 5, 2019 10-Q

AMSC / American Superconductor Corp. 10-Q (Quarterly Report)

10-Q 1 amsc2018123110q.htm 10-Q UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: December 31, 2018 ¨ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Num

February 5, 2019 EX-10.1

Subcontract Agreement, dated October 31, 2018, by and between the Registrant and Commonwealth Edison Company.

EXHIBIT 10.1 Confidential Treatment Requested by American Superconductor Corporation Execution Copy SUBCONTRACT AGREEMENT This Subcontract Agreement No. 08900001-007 (the "Agreement") dated October 31, 2018 by and between American Superconductor Corporation, a Delaware corporation with offices at 114 East Main Street, Ayer, MA 01432 ("AMSC") and Commonwealth Edison, an Illinois corporation with of

February 5, 2019 EX-99.1

AMSC Reports Third Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 6 at 10:00 am ET

AMSC Reports Third Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, February 6 at 10:00 am ET Ayer, MA – February 5, 2019 – AMSC (Nasdaq: AMSC), a global solutions provider serving wind and power grid industry leaders, today reported financial results for its third quarter of fiscal 2018 ended December 31, 2018.

February 5, 2019 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): February 5, 2019 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

November 6, 2018 EX-99.1

AMSC Reports Second Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 7 at 10:00 am ET

EX-99.1 2 amsc20180930ex991.htm EXHIBIT 99.1 AMSC Reports Second Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, November 7 at 10:00 am ET Ayer, MA – November 6, 2018 – AMSC (Nasdaq: AMSC), a global solutions provider serving wind and power grid industry leaders, today reported financial results for its second quarter of fiscal 2018 end

November 6, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

8-K 1 amsc201809308-k.htm 8-K UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): November 6, 2018 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other

November 6, 2018 EX-10.4

Form of Option Surrender Agreement under 2007 Stock Incentive Plan, as amended.

OPTION SURRENDER AGREEMENT TO: AMERICAN SUPERCONDUCTOR CORPORATION (THE “COMPANY”) RE: SURRENDER OF OPTIONS The undersigned holder of stock options (the “Company Options”) to acquire shares of common stock of the Company, par value $0.

November 6, 2018 10-Q

AMSC / American Superconductor Corp. 10-Q (Quarterly Report)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q x Quarterly Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the quarterly period ended: September 30, 2018 ¨ Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from to . Commission File Number: 0-19672 American Supercond

October 31, 2018 8-K

Entry into a Material Definitive Agreement

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 31, 2018 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS

October 5, 2018 SC 13G

AMSC / American Superconductor Corp. / HIRSCHMAN ORIN - ACQUISITION OF BENEFICIAL OWNERSHIP Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 American Superconductor Corporation (Name of Issuer) Common Stock, par value $0.01 per share (Title of Class of Securities) 030111207 (CUSIP Number) October 3, 2018 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which

August 1, 2018 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 27, 2018 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Em

July 31, 2018 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2018 American Superconductor Corporation (Exact name of registrant as specified in its charter) Delaware 000-19672 04-2959321 (State or other jurisdiction (Commission (IRS Em

July 31, 2018 EX-99.1

AMSC Reports First Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 1 at 10:00 am ET

EX-99.1 2 amsc-20180630ex991.htm EXHIBIT 99.1 AMSC Reports First Quarter Fiscal 2018 Financial Results and Provides Business Outlook Company to host conference call tomorrow, August 1 at 10:00 am ET Ayer, MA – July 31, 2018 – AMSC (Nasdaq: AMSC), a global solutions provider serving wind and power grid industry leaders, today reported financial results for its first quarter of fiscal 2018 ended Jun

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