X0306 4 2021-05-20 0 0000880807 AMERICAN SUPERCONDUCTOR CORP /DE/ AMSC 0001425153 McGahn Daniel P C/O AMERICAN SUPERCONDUCTOR CORPORATION 114 EAST MAIN ST AYER MA 01432 1 1 0 0 Chairman, President and CEO Common Stock 2021-05-20 4 A 0 75000 0.00 A 717469 D Common Stock 2021-05-24 4 S 0 8690 14.1861 D 708779 D Common Stock 8056 I By 401(k) plan The restricted stock award was granted on May 20, 2021. The award will vest as follows: (a) 10,000 shares will vest on May 20, 2022, 10,000 shares will vest on May 20, 2023, and 10,000 shares will vest on May 20, 2024, and (b) 45,000 shares will vest upon the achievement of specified performance objectives. Represents the number of shares sold by the reporting person to cover tax withholding obligations in connection with the vesting of a restricted stock award on May 21, 2021. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 Plan. The sales were executed in multiple trades at prices ranging from $13.88-$14.86. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide, upon request, to the SEC staff, the issuer, or a security holder of the issuer, full information regarding the number of shares and price at which the transaction was effected. Following all the transactions reported on this Form 4, the reporting person holds 708,779 shares directly. Following all the transactions reported on this Form 4, the reporting person holds 8,056 shares indirectly through the company's 401(k) plan as of May 24, 2021. /s/ Daniel P. McGahn 2021-05-24