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AMERICAN SUPERCONDUCTOR CORP DE

For the period ended Jul 25, 2025. Filed Jun 13, 2025.

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What shareholders are asked to vote on at a company's meeting. It is where to find what directors and top executives are paid, and who owns the most shares.

Jul 25, 2025 · Filed Jun 13, 2025

AMSC$23.39-2.5%Stored close · as of Nov 6, 2026
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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 §240.14a-12

American Superconductor Corporation

(Name of Registrant as Specified in its Charter)

(Name of Person(s) Filing Proxy Statement, if Other than Registrant)

Payment of Filing Fee (Check all boxes that apply):

☒No fee required.
☐Fee paid previously with preliminary materials.
☐Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.

AMERICAN SUPERCONDUCTOR CORPORATION

114 East Main Street

Ayer, Massachusetts 01432

Notice of Annual Meeting of Stockholders to

be Held on Friday, July 25, 2025

The Annual Meeting of Stockholders (the “Annual Meeting”) of American Superconductor Corporation (“AMSC”) will be held via a completely virtual format through a live audio-only webcast hosted online atwww.virtualshareholdermeeting.com/AMSC2025 on Friday, July 25, 2025 at 10:30 a.m., Eastern Time. The Annual Meeting will be held exclusively online and you will not be able to attend the Annual Meeting physically. You will be able to vote your shares electronically and submit questions during the meeting by logging into the website listed above using the 16-digit control number included in the Notice of Internet Availability of Proxy Materials, on your proxy card or on the instructions that accompanied our proxy materials. Online check-in will begin at 10:15 a.m. Eastern Time, and you should allow ample time for thecheck-in procedures.

At the Annual Meeting, AMSC’s stockholders will consider and act upon the following matters:

1.To elect Laura A. Dambier, Terence R. Donnelly, Arthur H. House, Margaret D. Klein, Barbara G. Littlefield, Daniel P. McGahn and David R. Oliver, Jr. as directors of AMSC for a term of office expiring at the 2026 annual meeting of stockholders.
2.To ratify the appointment by the Audit Committee of the Board of Directors of RSM US LLP as AMSC’s independent registered public accounting firm for the current fiscal year.
3.To approve, on an advisory basis, the compensation of AMSC’s named executive officers.
4.To transact such other business as may properly come before the meeting or any continuation, postponement or adjournment thereof.

Stockholders of record at the close of business on May 29, 2025 will be entitled to notice of and to vote at the Annual Meeting or any continuation, postponement or adjournment thereof. A complete list of these stockholders will be open to the examination of any stockholder at our principal executive offices at 114 East Main Street, Ayer, MA 01432 for a period of ten days prior to the Annual Meeting. The Annual Meeting may be continued or adjourned from time to time without notice other than by announcement at the Annual Meeting.

IT IS IMPORTANT THAT YOUR SHARES BE REPRESENTED AT THE VIRTUAL ANNUAL MEETING. THEREFORE, WHETHER OR NOT YOU EXPECT TO ATTEND THE VIRTUAL ANNUAL MEETING, PLEASE SUBMIT YOUR PROXY (1) OVER THE INTERNET, (2) BY TELEPHONE, OR (3) BY MAIL. FOR SPECIFIC INSTRUCTIONS, PLEASE REFER TO THE QUESTIONS AND ANSWERS BEGINNING ON THE FIRST PAGE OF THE PROXY STATEMENT AND THE INSTRUCTIONS ON THE PROXY CARD RELATING TO THE VIRTUAL ANNUAL MEETING.

By Order of the Board of Directors,

John R. Samia, Secretary

Ayer, Massachusetts

June 13, 2025

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.