Arthur H. House - 06 Aug 2025 Form 4 Insider Report for AMERICAN SUPERCONDUCTOR CORP /DE/ (AMSC)

Role
Director
Signature
/s/ John R. Samia, Attorney-in-Fact
Issuer symbol
AMSC
Transactions as of
06 Aug 2025
Transactions value $
-$428,101
Form type
4
Filing time
08 Aug 2025, 16:15:14 UTC
Previous filing
04 Apr 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
House Arthur H Director C/O AMERICAN SUPERCONDUCTOR CORPORATION, 114 EAST MAIN ST, AYER /s/ John R. Samia, Attorney-in-Fact 08 Aug 2025 0001685155

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction AMSC Common Stock Options Exercise $66K +9.7K +19.94% $6.80 58.4K 06 Aug 2025 Direct
transaction AMSC Common Stock Sale -$494K -9.7K -16.62% $50.92 48.7K 08 Aug 2025 Direct F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction AMSC Stock Options (Right to Buy) Options Exercise $0 -9.7K -100% $0.00 0 06 Aug 2025 Common Stock 9.7K $6.80 Direct F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The sales reported on this Form 4 were made by the reporting person for tax and estate planning purposes.
F2 Following all the transactions reported on this Form 4, the reporting person holds 48,663 shares directly.
F3 The stock option was automatically granted under the Amended and Restated 2007 Director Stock Plan on the third business day following the reporting person's election to the Board. The stock option vested in two equal annual installments beginning September 20, 2017, and became fully vested and exerciseable on September 20, 2018.