(AMSC)

Role: SVP, CFO & Treasurer
Signature: /s/ John W. Kosiba, Jr.
Issuer symbol: AMSC
Transactions as of: 27 May 2025
Net transactions value: -$1,319,757
Form type: 4
Filing time: 29 May 2025, 17:22:41 UTC
Previous filing: 22 May 2025
Next filing: 09 Jun 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kosiba John W JR	SVP, CFO & Treasurer	C/O AMERICAN SUPERCONDUCTOR CORPORATION, 114 EAST MAIN ST, AYER	/s/ John W. Kosiba, Jr.	29 May 2025	0001703463

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMSC	Common Stock	Sale	$258,022	-10,097	-2.2%	$25.55	454,179	27 May 2025	Direct	F1, F2
transaction	AMSC	Common Stock	Sale	$1,061,735	-39,903	-8.8%	$26.61	414,276	27 May 2025	Direct	F1, F3, F4
holding	AMSC	Common Stock						9,719	27 May 2025	By 401(k) plan	F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id	Content
F1	The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 11, 2024.
F2	The sales were executed in multiple trades at prices ranging from $25.10-$26.00. 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 prices at which the transactions were effected.
F3	The sales were executed in multiple trades at prices ranging from $26.25-$27.10. 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 prices at which the transactions were effected.
F4	Following all the transactions reported on this Form 4, the reporting person holds 414,276 shares directly.
F5	Following all the transactions reported on this Form 4, the reporting person holds 9,719 shares indirectly through the company's 401(k) plan as of May 29, 2025.