[Form 4] American Superconductor Corp Insider Trading Activity

Rhea-AI Filing Summary

Arthur H. House, a director of American Superconductor Corporation (AMSC), filed a Form 4 reporting stock option-related activity and an open-market sale. The filing shows a transaction dated 08/06/2025 related to a $6.80 exercise-price stock option covering 9,703 shares and a sale on 08/08/2025 of 9,703 common shares at $50.9205 per share. The Form 4 states the shares were sold for tax and estate planning purposes. Following these transactions the reporting person directly holds 48,663 shares. The filing also references the Amended and Restated 2007 Director Stock Plan and provides vesting/grant timing for the option.

Positive

• Timely, detailed disclosure of insider transactions including dates, amounts, and sale price
• Reason for sale disclosed (tax and estate planning), which improves transparency

Negative

• Sale of 9,703 shares on 08/08/2025 reduced direct holdings to 48,663 shares
• Transaction involved previously issued option related to 9,703 shares (exercise price $6.80), which is a dilution-related item investors may note

Insights

Securities Analyst

Director sold 9,703 AMSC shares at $50.9205; holdings fell to 48,663—sale disclosed as tax and estate planning.

The Form 4 documents a sale of 9,703 common shares on 08/08/2025 at $50.9205 and an associated stock-option-related transaction dated 08/06/2025 with a stated exercise/conversion price of $6.80 covering 9,703 shares. The filer states the sale was for tax and estate planning. From an investor-significance perspective this is a routine, disclosed insider sale rather than an operational update; the filing provides concrete quantities and prices enabling precise calculation of proceeds and post-transaction ownership.

Corporate Governance Expert

Form 4 shows timely disclosure and explains the sale as tax/estate planning; option grant details are included under the director plan.

The filing identifies the reporting person as a director and documents both an option-related item and a sale of the same number of shares, with an explicit explanation that the sale was for tax and estate planning. The Form references the 2007 Director Stock Plan and provides vesting/grant history. There are no governance red flags or allegations in the filing; the disclosure appears compliant and detailed regarding dates, amounts, and rationale.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a 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). See Instruction 10.

1. Name and Address of Reporting Person^*

House Arthur H

(Last) (First) (Middle)

C/O AMERICAN SUPERCONDUCTOR CORPORATION

114 EAST MAIN ST

(Street)

AYER MA 01432

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
AMERICAN SUPERCONDUCTOR CORP /DE/ [ AMSC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/06/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/06/2025		M		9,703	A	$6.8	58,366	D
Common Stock	08/08/2025		S(1)		9,703	D	$50.9205	48,663(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (Right to Buy)	$6.8	08/06/2025		M			9,703	(3)	09/20/2026	Common Stock	9,703	$0.00	0	D

Explanation of Responses:

1. The sales reported on this Form 4 were made by the reporting person for tax and estate planning purposes.

2. Following all the transactions reported on this Form 4, the reporting person holds 48,663 shares directly.

3. 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.

	/s/ John R. Samia, Attorney-in-Fact	08/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Arthur H. House report on the AMSC Form 4?

He reported a stock-option-related transaction dated 08/06/2025 and a sale of 9,703 common shares on 08/08/2025 at $50.9205 per share.

How many shares did the director sell and at what price (AMSC)?

9,703 shares sold at $50.9205 per share on 08/08/2025.

Why were the AMSC shares sold according to the filing?

The filing states the sales were made for tax and estate planning purposes.

How many AMSC shares does the reporting person hold after the transactions?

48,663 shares held directly following the reported transactions.

Was there an option involved in the transactions disclosed on the AMSC Form 4?

Yes. The Form discloses a stock option with a $6.80 exercise/conversion price covering 9,703 shares and references the Amended and Restated 2007 Director Stock Plan and vesting history.