Title of each class of securities to which transaction applies:

Aggregate number of securities to which transaction applies:

Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

Proposed maximum aggregate value of transaction:

Total fee paid:

Amount Previously Paid:

Form, Schedule or Registration Statement No.:

Filing Party:

Date Filed:

AMERICAN SUPERCONDUCTOR CORPORATION

114 East Main Street

Ayer, MA 01432

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

Proxy Materials Available to VIEW or RECEIVE:

1. Notice & Proxy Statement        2. Annual Report

How to View Online:

Have the information that is printed in the box marked by the arrow (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:

                1) BY INTERNET:         www.proxyvote.com

                2) BY TELEPHONE:     1-800-579-1639

                3) BY E-MAIL*:             sendmaterial@proxyvote.com

*  If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before July 18, 2019 to facilitate timely delivery.

—  How To Vote  —

Please Choose One of the Following Voting Methods

Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

The Board of Directors recommends you vote

FOR the following:

2.  To approve amendments to AMSC’s 2007 Stock Incentive Plan to add 1,200,000 shares to the total number of shares available for issuance under the plan and to remove certain provisions that were otherwise required for awards to qualify as performance-based compensation under an exception to Section 162(m) of the Internal Revenue Code of 1986, as amended, prior to its repeal.

3.  To approve amendments to AMSC’s Amended and Restated 2007 Director Stock Plan to add 50,000 shares to the total number of shares available for issuance under the plan and to change the timing of option awards granted in connection with a non-employee directors initial election to the Board of Directors.

4.  To ratify the selection 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.